Light New Particles at Electron-Positron Colliders

Improved measurement of Born cross sections for χbJ ω and χbJ (π π−π0)non−ω (J = 0, 1, 2) at Belle and Belle II

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, M Alhakami, A Aloisio, N Althubiti, M Angelsmark, N Anh Ky, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, H Bae, NK Baghel, S Bahinipati, P Bambade

2026-04-14

<jats:title> A <jats:sc>bstract</jats:sc> </jats:title> ..

Observation of e e − → η ϒ ( 2 S ) and search for e e − → η ϒ ( 1 S ) , γ X b at s near 10.75 GeV

I Adachi, L Aggarwal, H Ahmed, Y Ahn, H Aihara, N Akopov, S Alghamdi, M Alhakami, A Aloisio, N Althubiti, K Amos, M Angelsmark, N Anh Ky, C Antonioli, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad

2026-03-23

<jats:p> We present an analysis of the processes <a:math xmlns:a="http://www.w3.org/1998/M..

Search for e e − → γ χ b J ( J = 0 , 1, 2) near s = 10.746 GeV at Belle II

M Abumusabh, I Adachi, L Aggarwal, H Ahmed, Y Ahn, H Aihara, N Akopov, S Alghamdi, M Alhakami, A Aloisio, N Althubiti, K Amos, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, R Ayad, V Babu, H Bae

2026-03-23

<jats:p> We search for the <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="i..

Measurement of the C P asymmetry in D 0 → π π − π 0 decays at Belle II

M Abumusabh, I Adachi, L Aggarwal, H Ahmed, Y Ahn, H Aihara, N Akopov, S Alghamdi, M Alhakami, A Aloisio, N Althubiti, K Amos, N Anh Ky, DM Asner, H Atmacan, T Aushev, R Ayad, V Babu, H Bae, NK Baghel

2026-03-16

<jats:p> We measure the time- and phase-space-integrated <a:math xmlns:a="http://www.w3.or..

Search for C P violation in Ξ c → Σ h h − and Λ c → p h h − at Belle II

M Abumusabh, I Adachi, H Ahmed, Y Ahn, H Aihara, N Akopov, S Alghamdi, M Alhakami, N Althubiti, K Amos, N Anh Ky, DM Asner, H Atmacan, R Ayad, V Babu, NK Baghel, S Bahinipati, P Bambade, Sw Banerjee, M Bartl

2026-02-24

<jats:p> We report decay-rate <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display..

First measurements of the branching fractions for the decay modes Ξ c 0 → Λ η and Ξ c 0 → Λ η ′ and search for the decay Ξ c 0 → Λ π 0 using Belle and Belle II data

M Abumusabh, I Adachi, L Aggarwal, H Ahmed, Y Ahn, H Aihara, N Akopov, S Alghamdi, M Alhakami, A Aloisio, N Althubiti, K Amos, N Anh Ky, C Antonioli, DM Asner, H Atmacan, T Aushev, R Ayad, V Babu, S Bahinipati

2026-02-23

<jats:p> Using data samples of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" displa..

Measurement of inclusive (Formula presented) partial branching fractions and

M Abumusabh, I Adachi, K Adamczyk, L Aggarwal, H Ahmed, Y Ahn, H Aihara, N Akopov, S Alghamdi, M Alhakami, A Aloisio, N Althubiti, K Amos, N Anh Ky, C Antonioli, DM Asner, H Atmacan, T Aushev, R Ayad, V Babu

2026-02-09

A sample of 365 fb⁻¹ of (Formula presented) data collected by the Belle II experiment is used to measure the partial br..

Measurement of time-dependent CP asymmetries in decays at Belle and Belle II

M Abumusabh, I Adachi, L Aggarwal, H Ahmed, Y Ahn, H Aihara, N Akopov, S Alghamdi, M Alhakami, K Amos, N Anh Ky, DM Asner, H Atmacan, T Aushev, R Ayad, V Babu, S Bahinipati, P Bambade, S Banerjee, M Barrett

2026-01-01

We present a measurement of the time-dependent CP asymmetry in decays using a data set of 365 fb⁻¹ recorded by the Bell..

Determination of

I Adachi, K Adamczyk, L Aggarwal, H Ahmed, Y Ahn, H Aihara, N Akopov, S Alghamdi, M Alhakami, A Aloisio, K Amos, M Angelsmark, N AnhKy, C Antonioli, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad

2025-12-12

We present a determination of the Cabibbo-Kobayashi-Maskawa matrix element |V<inf>cb</inf>| from the decay B → Dℓν<inf>ℓ</inf> usi..

Search for an axion-like particle in B → K(*)a(→ γγ) decays at Belle

I Adachi, L Aggarwal, H Ahmed, Y Ahn, H Aihara, N Akopov, S Alghamdi, M Alhakami, A Aloisio, N Althubiti, K Amos, M Angelsmark, N Anh Ky, C Antonioli, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad

2025-12-01

We report a search for an axion-like particle a in B → K^(*)a decays using data collected with the Belle detector at the..

Search for the lepton-flavor-violating τ− → e∓ℓ±ℓ− decays at Belle II

I Adachi, L Aggarwal, H Ahmed, Y Ahn, H Aihara, N Akopov, S Alghamdi, M Alhakami, A Aloisio, N Althubiti, K Amos, M Angelsmark, N Anh Ky, C Antonioli, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu

2025-12-01

We present the result of a search for the charged-lepton-flavor violating decays τ⁻ → e^∓ℓ^±ℓ<sup>−..

Model-agnostic likelihood for the reinterpretation of the [Presented Formula] measurement at Belle II

M Abumusabh, I Adachi, L Aggarwal, H Ahmed, Y Ahn, N Akopov, S Alghamdi, M Alhakami, A Aloisio, N Althubiti, K Amos, N Anh Ky, DM Asner, H Atmacan, R Ayad, V Babu, H Bae, NK Baghel, P Bambade, S Banerjee

2025-11-24

We recently measured the branching fraction of the [Presented Formula]> decay using 362 fb−1 of on-resonance e+e− collision data u..

Charged-hadron identification at Belle II

R Žlebčík, L Zhu, QD Zhou, JS Zhou, B Zhang, M Zeyrek, F Zeng, L Zani, Y Yusa, J Yuan, K Yoshihara, JH Yin, K Yi, J Yelton, SB Yang, WC Yan, W Yan, S Yamada, BD Yabsley, XP Xu

2025-11-01

The Belle II experiment’s ability to identify particles critically affects the sensitivity of its measurements. We describe Belle ..

Measurement of the D0 → K−π e e− branching fraction and search for D0 → π π−e e− and D0 → K K−e e− decays at Belle

I Adachi, L Aggarwal, H Ahmed, Y Ahn, H Aihara, N Akopov, S Alghamdi, M Alhakami, A Aloisio, N Althubiti, K Amos, M Angelsmark, N Anh Ky, C Antonioli, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad

2025-10-30

We present a study of the rare charm meson decays D⁰ → K^þK⁻e^þe⁻, π<sup>þ</s..

Search for B0 →k∗0τ τ- Decays at the Belle II Experiment

I Adachi, K Adamczyk, L Aggarwal, H Ahmed, H Aihara, N Akopov, M Alhakami, A Aloisio, N Althubiti, M Angelsmark, N Anh Ky, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, H Bae, NK Baghel, S Bahinipati

2025-10-10

We present a search for the rare flavor-changing neutral-current decay B0→K∗0τ+τ- with data collected by the Belle II experiment a..

Measurement of B → τ ντ branching fraction with a hadronic tagging method at Belle II

I Adachi, K Adamczyk, H Ahmed, Y Ahn, H Aihara, N Akopov, M Alhakami, A Aloisio, N Althubiti, M Angelsmark, NA Ky, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, NK Baghel, S Bahinipati, P Bambade

2025-10-03

We present a measurement of the branching fraction of B⁺ → τ⁺ν<inf>τ</inf> decays using 387 ± 6 × 10<sup>6</..

Search for a Dark Higgs Boson Produced in Association with Inelastic Dark Matter at the Belle II Experiment

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, S Alghamdi, M Alhakami, A Aloisio, N Althubiti, K Amos, M Angelsmark, N Anh Ky, C Antonioli, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, NK Baghel

2025-09-26

Inelastic dark matter models that have two dark matter particles and a massive dark photon can reproduce the observed relic dark m..

Observation of the decays B →Σc(2455) Ξ-c and B0→Σc(2455)0Ξ0c

M Abumusabh, I Adachi, L Aggarwal, H Ahmed, Y Ahn, H Aihara, N Akopov, S Alghamdi, M Alhakami, A Aloisio, N Althubiti, K Amos, NA Ky, DM Asner, H Atmacan, T Aushev, V Aushev, R Ayad, V Babu, H Bae

2025-09-05

We report the first observation of the two-body baryonic decays B⁺ → Σ<inf>c</inf>(2455)⁺⁺¯Ξ<inf>c</inf>− an..

Measurement of B → K*(892)γ decays at Belle II

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Althubiti, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad, V Babu, H Bae, NK Baghel, S Bahinipati, P Bambade, S Banerjee

2025-09-01

We present measurements of B → K^*(892)γ decays using 365 fb⁻¹ of data collected from 2019 to 2022 by the Bel..

Search for a pentaquark state decaying into pJ/ψ in Υ(1, 2S) inclusive decays at Belle

X Dong, SM Zou, HY Zhang, XL Wang, I Adachi, JK Ahn, H Aihara, S Al Said, DM Asner, H Atmacan, R Ayad, S Bahinipati, S Banerjee, M Bessner, V Bhardwaj, D Biswas, D Bodrov, A Bozek, M Bračko, P Branchini

2025-09-01

Using the data samples of 102 million Υ(1S) and 158 million Υ(2S) events collected by the Belle detector, we search for a pentaqua..

Test of lepton flavor universality with measurements of RðD Þ and RðD* Þ using semileptonic B tagging at the Belle II experiment

I Adachi, K Adamczyk, L Aggarwal, H Ahmed, H Aihara, N Akopov, S Alghamdi, M Alhakami, A Aloisio, N Althubiti, K Amos, M Angelsmark, N Anh Ky, C Antonioli, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad

2025-08-26

We report measurements of the ratios of branching fractions (Formula presented), where (Formula presented) denotes either an elect..

Measurement of the CP asymmetry in D → π π0 decays at Belle II

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, S Alghamdi, M Alhakami, A Aloisio, K Amos, M Angelsmark, N Anh Ky, C Antonioli, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, H Bae, NK Baghel

2025-08-08

We measure the CP asymmetry in D⁺ → π⁺π⁰ decays reconstructed in e⁺e⁻ colli..

Measurements of the branching fractions of,, and at Belle and Belle II

I Adachi, JK Ahn, Y Ahn, N Akopov, S Alghamdi, M Alhakami, N Althubiti, K Amos, N Anh Ky, C Antonioli, DM Asner, M Aversano, R Ayad, V Babu, NK Baghel, P Bambade, S Banerjee, M Barrett, M Bartl, J Baudot

2025-08-01

Using 983.0 fb⁻¹ and 427.9 fb⁻¹ data samples collected with the Belle and Belle II detectors at the KEKB and..

Search for lepton flavor-violating decay modes B0→ K*0τ±ℓ∓ (ℓ = e, μ) with hadronic B-tagging at Belle and Belle II

I Adachi, Y Ahn, H Aihara, N Akopov, S Alghamdi, M Alhakami, A Aloisio, K Amos, M Angelsmark, N Anh Ky, C Antonioli, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, H Bae, NK Baghel, S Bahinipati

2025-08-01

We present the results of a search for the charged-lepton-flavor violating decays B⁰ → K^*0τ^±ℓ<sup..

Search for lepton-flavor-violating decays at Belle and Belle II

I Adachi, L Aggarwal, H Ahmed, Y Ahn, H Aihara, N Akopov, S Alghamdi, M Alhakami, A Aloisio, N Althubiti, K Amos, M Angelsmark, N Anh Ky, C Antonioli, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu

2025-08-01

We present the results of a search for charged-lepton-flavor violating decays, where ℓ⁻ is either an electron or a muon..

Search for Lepton-Flavor-Violating Decay Modes B0 → KS0 τ±ℓ∓ with Hadronic B Tagging at Belle and Belle II

I Adachi, K Adamczyk, L Aggarwal, H Ahmed, H Aihara, N Akopov, M Alhakami, A Aloisio, N Althubiti, NA Ky, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, H Bae, NK Baghel, S Bahinipati, P Bambade

2025-07-25

We present the first search for the lepton-flavor-violating decay modes B0→KS0τ±ℓ∓ (ℓ=μ,e) using the 711 and 365 fb-1 data samples..

Search for Pc c ¯ s (4459)0 and Pc c ¯ s (4338)0 in ϒ (1S,2S) Inclusive Decays at Belle

I Adachi, L Aggarwal, H Ahmed, JK Ahn, H Aihara, N Akopov, M Alhakami, A Aloisio, N Althubiti, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, H Bae, NK Baghel, S Bahinipati, P Bambade, S Banerjee

2025-07-25

Using data samples of 102 million ϒ(1S) events and 158 million ϒ(2S) events collected by the Belle detector at the KEKB asymmetric..

Measurement of the time-integrated CP asymmetry in D0 → K0SK0S decays using opposite-side flavor tagging at Belle and Belle II

I Adachi, Y Ahn, N Akopov, S Alghamdi, M Alhakami, A Aloisio, N Althubiti, K Amos, M Angelsmark, N AnhKy, C Antonioli, DM Asner, H Atmacan, T Aushev, M Aversano, R Ayad, V Babu, H Bae, NK Baghel, S Bahinipati

2025-07-21

We measure the time-integrated CP asymmetry in D⁰ → K⁰<inf>S</inf>K⁰<inf>S</inf> decays reconstru..

Measurement of the time-integrated CP asymmetry in D0 → π0π0 decays at Belle II

I Adachi, Y Ahn, N Akopov, S Alghamdi, M Alhakami, A Aloisio, N Althubiti, K Amos, M Angelsmark, N Anh Ky, C Antonioli, DM Asner, H Atmacan, T Aushev, M Aversano, R Ayad, V Babu, H Bae, NK Baghel, S Bahinipati

2025-07-08

We measure the time-integrated CP asymmetry, A<inf>CP</inf>, in D⁰ → π⁰π⁰ decays reconstructed in..

Determination of |Vub| from simultaneous measurements of untagged B0→π−ℓ νℓ and B →ρ0ℓ νℓ decays

I Adachi, L Aggarwal, H Aihara, N Akopov, A Aloisio, N Althubiti, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad, V Babu, H Bae, S Bahinipati, P Bambade, Sw Banerjee, S Bansal, M Barrett

2025-06-26

<jats:p>We present a measurement of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mo stretchy="false">|..

Model-independent measurement of D0−D¯0 mixing parameters in D0→KS0π π− decays at Belle and Belle II

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Althubiti, N Anh Ky, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, NK Baghel, P Bambade, Sw Banerjee, S Bansal, M Barrett, M Bartl, J Baudot

2025-06-26

<jats:p>We perform a model-independent measurement of the <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a..

Measurement of the branching fraction, polarization, and time-dependent CP asymmetry in B0 →ρ ρ- decays and constraint on the CKM angle φ2

I Adachi, L Aggarwal, H Ahmed, N Akopov, M Alhakami, A Aloisio, N Althubiti, N Anh Ky, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, NK Baghel, P Bambade, S Banerjee, M Barrett, M Bartl, J Baudot

2025-05-01

We present a measurement of the branching fraction and fraction of longitudinal polarization of B0→ρ+ρ- decays, which have two π0'..

Measurement of branching fractions, CP asymmetry, and isospin asymmetry for B →ργ decays using Belle and Belle II data

I Adachi, K Adamczyk, L Aggarwal, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal, M Barrett

2025-04-01

We present measurements of B+→ρ+γ and B0→ρ0γ decays using a combined data sample of 772×106 BB¯ pairs collected by the Belle exper..

Measurement of the branching fraction and CP -violating asymmetry of the decay B0 →π0π0 using 387 million ϒ (4S) decays in Belle II data

I Adachi, L Aggarwal, H Ahmed, H Aihara, M Alhakami, A Aloisio, N Althubiti, N Anh Ky, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, H Bae, NK Baghel, S Bahinipati, P Bambade, S Banerjee, S Bansal

2025-04-01

We measure the branching fraction and CP-violating flavor-dependent rate asymmetry of B0→π0π0 decays reconstructed using the Belle..

Measurement of the inclusive branching fractions for decays into D mesons via hadronic tagging

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, S Al Said, N Althubiti, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad, V Babu, H Bae, NK Baghel, S Bahinipati, P Bambade

2025-04-01

We report measurements of the absolute branching fractions,, and, where the latter is measured for the first time. The results are..

Search for CP violation in Ds →KS0K−π π decays using triple and quadruple products

L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Althubiti, N Anh Ky, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, H Bae, NK Baghel, S Bahinipati, P Bambade, S Banerjee, J Baudot, A Baur

2025-04-01

We perform the first search for CP violation in Ds+→KS0K−π+π+ decays. We use a combined data set from the Belle and Belle II exper..

Observations of the singly Cabibbo-suppressed decays Ξc →pKS0, Ξc →Λπ , and Ξc →Σ0π at Belle and Belle II

I Adachi, L Aggarwal, N Akopov, M Alhakami, A Aloisio, N Althubiti, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad, V Babu, NK Baghel, S Bahinipati, P Bambade, S Banerjee, M Barrett, J Baudot

2025-03-01

Using data samples of 983.0 fb⁻¹ and 427.9 fb⁻¹ accumulated with the Belle and Belle II detectors operating ..

Production cross sections of light and charmed mesons in e e- annihilation near 10.58 GeV

R Seidl, I Adachi, H Aihara, T Aushev, R Ayad, S Banerjee, K Belous, J Bennett, M Bessner, B Bhuyan, D Biswas, D Bodrov, M Bračko, P Branchini, TE Browder, A Budano, M Campajola, K Chilikin, K Cho, SK Choi

2025-03-01

We report measurements of production cross sections for ρ+, ρ0, ω, K∗+, K∗0, φ, η, KS0, f0(980), D+, D0, Ds+, D∗+, D∗0, and Ds∗+ i..

Observation of the decay B0 →j/ψω at Belle II

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, M Alhakami, A Aloisio, N Althubiti, N Anh Ky, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, NK Baghel, S Bahinipati, P Bambade, S Banerjee, M Barrett

2025-02-01

We measure the branching fraction of the decay B0→J/ψω using data collected with the Belle II detector at the SuperKEKB collider. ..

Measurement of CP Asymmetries in B0 → KS0 π0γ Decays at Belle II

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal, M Barrett

2025-01-10

We report measurements of time-dependent CP asymmetries in B0→KS0π0γ decays based on a data sample of (388±6)×106 BB¯ events colle..

Measurement of the branching fraction of Λc → pKS0π0 at Belle

I Adachi, L Aggarwal, H Ahmed, J K. Ahn, H Aihara, N Akopov, M Alhakami, A Aloisio, N Althubiti, M Angelsmark, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad, V Babu, H Bae, N K. Baghel

2025-01-01

We report a precise measurement of the ratio of branching fractions B(Λ^)c → pK⁰ <inf>S</inf>π⁰)=B..

Measurement of the time-integrated CP asymmetry in D0 → KS0 KS0 decays using Belle and Belle II data

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Althubiti, N Anh Ky, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, NK Baghel, S Bahinipati, P Bambade, S Banerjee, S Bansal, M Barrett

2025-01-01

We measure the time-integrated CP asymmetry in D0→KS0KS0 decays reconstructed in e+e-→cc¯ events collected by the Belle and Belle ..

Observation of time-dependent CP violation and measurement of the branching fraction of B0 →j/ψπ0 decays

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Althubiti, N Anh Ky, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, H Bae, NK Baghel, S Bahinipati, P Bambade, S Banerjee, S Bansal

2025-01-01

We present a measurement of the branching fraction and time-dependent charge-parity (CP) decay-rate asymmetries in B0→J/ψπ0 decays..

Observation of Ω(2012)−→Ξ(1530)K¯ and measurement of the effective couplings of Ω(2012)− to Ξ(1530)K¯ and ΞK¯

S Jia, CP Shen, CZ Yuan, JK Ahn, H Aihara, DM Asner, H Atmacan, R Ayad, S Bahinipati, S Banerjee, J Bennett, M Bessner, D Biswas, M Bračko, P Branchini, A Budano, M Campajola, MC Chang, BG Cheon, HE Cho

2025-01-01

Using ϒ(1S), ϒ(2S), and ϒ(3S) data collected by the Belle detector, we discover a new three-body decay, Ω(2012)⁻→Ξ(1530..

Evidence of hb(2P)→(1S)η Decay and Search for hb(1P,2P)→(1S)π0 with the Belle Detector

E Kovalenko, I Adachi, H Aihara, DM Asner, T Aushev, R Ayad, V Babu, S Banerjee, K Belous, J Bennett, M Bessner, T Bilka, D Biswas, A Bobrov, D Bodrov, A Bondar, A Bozek, M Bračko, P Branchini, TE Browder

2024-12-31

We report the first evidence for the hb(2P)→(1S)η transition with a significance of 3.5 standard deviations. The decay branching f..

Measurement of CP asymmetries in B0 →η′ KS0 decays at Belle II

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, M Barrett, J Baudot, A Baur

2024-12-01

We describe a measurement of charge-parity (CP) violation asymmetries in B0→η′KS0 decays using Belle II data. We consider η′→η(→γγ..

Measurement of the e e− → π π−π0 cross section in the energy range 0.62–3.50 GeV at Belle II

I Adachi, L Aggarwal, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal, M Barrett, J Baudot, A Baur

2024-12-01

We report a measurement of the e⁺e⁻ → π⁺π⁻π⁰ cross section in the energy ra..

Search for the baryon number and lepton number violating decays τ- → Λπ- and τ- → Λ ¯ π- Belle II

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Althubiti, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal

2024-12-01

We present a search for the baryon number B and lepton number L violating decays τ-→Λπ- and τ-→Λ¯π- produced from the e+e-→τ+τ- pr..

Angular analysis of B →k∗e e- in the low- q2 region with new electron identification at Belle

D Ferlewicz, P Urquijo, I Adachi, K Adamczyk, H Aihara, DM Asner, H Atmacan, R Ayad, V Babu, S Banerjee, P Behera, K Belous, J Bennett, M Bessner, V Bhardwaj, B Bhuyan, T Bilka, D Biswas, D Bodrov, M Bračko

2024-10-01

We perform an angular analysis of the B→K∗e+e- decay for the dielectron mass squared, q2, range of 0.0008-1.1200 GeV2/c4 using the..

Determination of the CKM angle ϕ3 from a combination of Belle and Belle II results

I Adachi, L Aggarwal, H Aihara, N Akopov, A Aloisio, S Al Said, N Anh Ky, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal, M Barrett, J Baudot

2024-10-01

We report a determination of the CKM angle ϕ<inf>3</inf>, also known as γ, from a combination of measurements using samples of up ..

Measurement of the energy dependence of the e e−→BB¯, BB¯∗, and B∗B¯∗ cross sections at Belle II

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Althubiti, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal

2024-10-01

We report measurements of the e⁺e⁻ → BB¯, BB¯^∗, and B^∗B¯^∗ cross sections at..

Measurements of the branching fractions of Ξc0→Ξ0π0, Ξc0→Ξ0η, and Ξc0→Ξ0η′ and asymmetry parameter of Ξc0→Ξ0π0

I Adachi, L Aggarwal, H Aihara, N Akopov, A Aloisio, N Althubiti, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, M Barrett, J Baudot

2024-10-01

We present a study of Ξ<inf>c</inf>⁰→Ξ⁰π⁰, Ξ<inf>c</inf>⁰→Ξ⁰η, and Ξ<inf>c<..

Test of lepton flavor universality with a measurement of R (D∗) using hadronic B tagging at the Belle II experiment

I Adachi, K Adamczyk, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal

2024-10-01

The ratio of branching fractions R(D∗)=B(B→D∗τ-ντ)/B(B→D∗-ν), where is an electron or muon, is measured using a Belle II data samp..

Measurement of Angular Coefficients of B ¯ →d∗ℓ ν ¯ ℓ: Implications for

MT Prim, F Bernlochner, F Metzner, H Aihara, DM Asner, T Aushev, R Ayad, V Babu, S Banerjee, P Behera, K Belous, J Bennett, M Bessner, V Bhardwaj, B Bhuyan, T Bilka, D Biswas, D Bodrov, A Bondar, J Borah

2024-09-27

We measure the complete set of angular coefficients Ji for exclusive B¯→D∗ℓν¯ℓ decays (ℓ=e, μ). Our analysis uses the full 711 fb-..

Search for Rare b →dℓ ℓ- Transitions at Belle

I Adachi, L Aggarwal, H Aihara, N Akopov, A Aloisio, S Al Said, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal, M Barrett, J Baudot, A Beaubien

2024-09-06

We present the results of a search for the b→dℓ+ ℓ- flavor-changing neutral-current rare decays B+,0→(η,ω,π+,0,ρ+,0)e+e- and B+,0→..

Search for lepton-flavor-violating τ−→ μ−μ μ− decays at Belle II

I Adachi, L Aggarwal, H Aihara, N Akopov, A Aloisio, N Althubiti, N Anh Ky, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal, M Barrett, J Baudot

2024-09-01

We present the result of a search for the charged-lepton-flavor violating decay τ⁻ → μ⁻μ⁺μ<sup>−<..

Measurements of the Branching Fraction, Polarization, and CP Asymmetry for the Decay B0 →ωω

Y Guan, AJ Schwartz, K Kinoshita, I Adachi, H Aihara, S Al Said, DM Asner, H Atmacan, R Ayad, S Bahinipati, S Banerjee, K Belous, J Bennett, M Bessner, V Bhardwaj, B Bhuyan, D Biswas, A Bobrov, D Bodrov, J Borah

2024-08-23

We present a comprehensive study of B0→ωω decays using 772×106 BB¯ pairs collected with the Belle detector at the KEKB e+e- collid..

Search for Baryon-Number-Violating Processes in B- Decays to the Ξ ¯ c0 Λ ¯ c- Final State

T Gu, V Savinov, I Adachi, H Aihara, DM Asner, H Atmacan, T Aushev, R Ayad, S Banerjee, K Belous, J Bennett, M Bessner, V Bhardwaj, B Bhuyan, D Biswas, A Bobrov, D Bodrov, J Borah, A Bozek, M Bračko

2024-08-16

We report the results of the first search for B- decays to the Ξ¯c0Λ¯c- final state using 711 fb-1 of data collected at the γ(4S) ..

Measurement of the branching fractions of B¯ → D(*)K−KS∗0 and B¯ → D(*)Ds− decays at Belle II

I Adachi, L Aggarwal, H Aihara, N Akopov, A Aloisio, N Althubiti, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal, M Barrett

2024-08-01

We present measurements of the branching fractions of eight B¯⁰ → D^(*)+K⁻K<inf>S</inf><sup>∗0</su..

Search for the decay B0 →γγ using Belle and Belle II data

I Adachi, L Aggarwal, H Aihara, N Akopov, A Aloisio, S Al Said, N Althubiti, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal

2024-08-01

We report the result of a search for the rare decay B0→γγ using a combined dataset of 753×106 BB¯ pairs collected by the Belle exp..

Test of light-lepton universality in τ decays with the Belle II experiment

I Adachi, K Adamczyk, L Aggarwal, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal, M Barrett, J Baudot

2024-08-01

We present a measurement of the ratio R<inf>μ</inf>=Bτ⁻→μ⁻ν¯<inf>μ</inf>ν<inf>τ</inf>/Bτ⁻→e<sup>−..

New graph-neural-network flavor tagger for Belle II and measurement of sin 2φ1 in B0 →J/ψ K S0 decays

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal, M Barrett

2024-07-01

We present GFlaT, a new algorithm that uses a graph-neural-network to determine the flavor of neutral B mesons produced in ϒ(4S) d..

Study of Υ(10753) decays to π π−Υ(nS) final states at Belle II

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal, M Barrett, J Baudot

2024-07-01

We present an analysis of the process e⁺e⁻ → π⁺π⁻Υ(nS) (where n = 1, 2, or 3) reconstr..

Evidence for B →k ν ν ¯ decays

I Adachi, K Adamczyk, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal, M Barrett

2024-06-01

We search for the rare decay B+→K+νν¯ in a 362 fb-1 sample of electron-positron collisions at the δ (4S) resonance collected with ..

Measurement of CP asymmetries in B0 → KS0 KS0 KS0 decays at Belle II

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal, M Barrett

2024-06-01

We report a measurement of decay-time-dependent charge-parity (CP) asymmetries in B0→KS0KS0KS0 decays. We use 387×106 BB¯ pairs co..

Measurement of the branching fraction of the decay B- →d0ρ (770)- at Belle II

I Adachi, L Aggarwal, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal, M Barrett, J Baudot, A Baur

2024-06-01

We measure the branching fraction of the decay B-→D0ρ(770)- using data collected with the Belle II detector. The data contain 387 ..

Search for a heavy neutral lepton that mixes predominantly with the tau neutrino

M Nayak, S Dey, A Soffer, I Adachi, H Aihara, S Al Said, DM Asner, H Atmacan, R Ayad, V Babu, S Banerjee, M Bauer, P Behera, K Belous, M Bessner, V Bhardwaj, B Bhuyan, T Bilka, D Biswas, A Bobrov

2024-06-01

We report a search for a heavy neutral lepton (HNL) that mixes predominantly with ντ. The search utilizes data collected with the ..

Search for a μ μ- resonance in four-muon final states at Belle II

I Adachi, K Adamczyk, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, V Aushev, M Aversano, R Ayad, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal, M Barrett

2024-06-01

We report on a search for a resonance X decaying to a pair of muons in e+e-→μ+μ-X events in the 0.212-9.000 GeV/c2 mass range, usi..

First Measurement of R (Xτ/ℓ) as an Inclusive Test of the b →cτν Anomaly

I Adachi, K Adamczyk, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, V Babu, S Bahinipati, P Bambade, S Banerjee, S Bansal, M Barrett, J Baudot, A Baur

2024-05-24

We measure the tau-to-light-lepton ratio of inclusive B-meson branching fractions R(Xτ/ℓ)B(B→Xτν)/B(B→Xℓν), where ℓ indicates an e..

Measurement of branching-fraction ratios and CP asymmetries in B± → DCP±K± decays at Belle and Belle II

I Adachi, L Aggarwal, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, R Ayad, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, M Barrett, J Baudot, M Bauer

2024-05-01

We report results from a study of B^±→ DK^± decays followed by D decaying to the CP-even final state K<sup>+</..

Search for the e e- →ηb (1S)ω and e e- →χb0 (1P)ω processes at s =10.745 GeV

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, M Barrett, J Baudot, M Bauer

2024-04-01

We search for the e+e-→ηb(1S)ω and e+e-→χb0(1P)ω processes at a center-of-mass energy of 10.745 GeV, which is close to the peak of..

Search for the semileptonic decays Ξc0 → Ξ0ℓ ℓ- at Belle

JX Cui, YB Li, CP Shen, I Adachi, H Aihara, S Al Said, DM Asner, T Aushev, R Ayad, V Babu, S Bahinipati, S Banerjee, M Bauer, P Behera, K Belous, J Bennett, M Bessner, B Bhuyan, T Bilka, D Biswas

2024-03-01

Using the full data sample of 980 fb-1 collected with the Belle detector at the KEKB asymmetric energy electron-positron collider,..

Search for a dark leptophilic scalar produced in association with τ τ- pair in e e- annihilation at center-of-mass energies near 10.58 GeV

D Biswas, S Banerjee, I Adachi, H Aihara, DM Asner, T Aushev, R Ayad, V Babu, P Behera, J Bennett, M Bessner, V Bhardwaj, B Bhuyan, T Bilka, D Bodrov, J Borah, A Bozek, M Bračko, P Branchini, TE Browder

2024-02-01

A dark leptophilic scalar (φL) is a hypothetical particle that couples only to leptons rather than quarks. We report on a search f..

Search for baryon and lepton number violating decays D →pℓ

S Maity, R Garg, S Bahinipati, V Bhardwaj, H Aihara, S Al Said, DM Asner, H Atmacan, T Aushev, R Ayad, V Babu, S Banerjee, M Bauer, J Bennett, M Bessner, D Biswas, A Bobrov, D Bodrov, G Bonvicini, J Borah

2024-02-01

We search for the baryon and lepton number violating charm decays, D→pℓ, where D is either a D0 or a D¯0 and ℓ is a muon or an ele..

Search for the decay Bs0 →j/ψπ0 at Belle experiment

D Kumar, B Bhuyan, H Aihara, DM Asner, T Aushev, R Ayad, V Babu, S Banerjee, M Bauer, P Behera, K Belous, J Bennett, M Bessner, T Bilka, D Biswas, A Bobrov, D Bodrov, J Borah, M Bračko, P Branchini

2024-02-01

We have analyzed 121.4 fb-1 of data collected at the ?(5S) resonance by the Belle experiment using the KEKB asymmetric-energy e+e-..

Belle II observation prospects for axionlike particle production from B meson annihilation decay

Y Zhang, A Ishikawa, E Kou, DT Marcantonio, P Urquijo

2024-01-01

We investigate a new production mechanism of axionlike particle (ALP) from B meson annihilation decays and its observation potenti..

Classification of three-family flavoured DFSZ axion models that have no domain wall problem

P Cox, MJ Dolan, M Hayat, A Thamm, RR Volkas

2024-01-01

We provide an exhaustive classification of three-family DFSZ axion models that have no cosmological domain wall problem. This resu..

Measurement of branching fractions and direct CP asymmetries for B →Kπ and B →ππ decays at Belle II

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal, M Barrett, J Baudot

2024-01-01

We report measurements of the branching fractions and direct CP asymmetries of the decays B0→K+π-, B+→K+π0, B+→K0π+, and B0→K0π0, ..

Observation of charmed strange meson pair production in ϒ (2S) decays and in e e- annihilation at s =10.52 GeV

BS Gao, WJ Zhu, XL Wang, I Adachi, H Aihara, DM Asner, V Aulchenko, T Aushev, R Ayad, V Babu, S Banerjee, M Bauer, P Behera, K Belous, J Bennett, M Bessner, V Bhardwaj, T Bilka, D Biswas, A Bobrov

2023-12-01

We observe the process ϒ(2S)→Ds(∗)+DsJ- and continuum production e+e-→Ds(∗)+DsJ- at s=10.52 GeV (and their charge conjugates) usin..

Search for a long-lived spin-0 mediator in b →s transitions at the Belle II experiment

I Adachi, K Adamczyk, L Aggarwal, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, M Barrett, J Baudot, M Bauer

2023-12-01

Additional spin-0 particles appear in many extensions of the standard model. We search for long-lived spin-0 particles S in B-meso..

Determination of

I Adachi, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal, M Barrett, J Baudot

2023-11-01

We determine the Cabibbo-Kobayashi-Maskawa matrix-element magnitude |Vcb| using B¯0→D∗+-ν¯ decays reconstructed in 189 fb-1 of col..

Precise Measurement of the Ds Lifetime at Belle II

I Adachi, L Aggarwal, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, M Barrett, J Baudot, M Bauer, A Baur

2023-10-27

We measure the lifetime of the Ds+ meson using a data sample of 207 fb-1 collected by the Belle II experiment running at the Super..

Measurement of CP asymmetries in B0 →φ Ks0 decays with Belle II

I Adachi, K Adamczyk, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, M Barrett, J Baudot

2023-10-01

We present a measurement of time-dependent rate asymmetries in B0→φKS0 decays to search for non-standard-model physics in b→qq¯s t..

Search for a τ τ- Resonance in e e- →μ μ-τ τ- Events with the Belle II Experiment

I Adachi, K Adamczyk, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, S Bansal, M Barrett

2023-09-22

We report the first search for a nonstandard-model resonance decaying into τ pairs in e+e-→μ+μ-τ+τ- events in the 3.6-10 GeV/c2 ma..

Measurement of CP Violation in B0 → KS0 π0 Decays at Belle II

I Adachi, K Adamczyk, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, M Barrett, J Baudot

2023-09-15

We report a measurement of the CP-violating parameters C and S in B0→KS0π0 decays at Belle II using a sample of 387×106 BB¯ events..

Evidence for B0 →p ς ¯ 0π- at Belle

CY Chang, MZ Wang, I Adachi, H Aihara, SA Said, DM Asner, H Atmacan, T Aushev, R Ayad, V Babu, S Banerjee, M Bauer, P Behera, K Belous, J Bennett, F Bernlochner, M Bessner, T Bilka, D Biswas, A Bobrov

2023-09-01

We search for the B0→pς¯0π- decay with ς¯0→Λ¯γ, where the γ is not measured, using a data sample corresponding to an integrated lu..

Measurement of CP asymmetries and branching-fraction ratios for B± → DK± and Dπ± with D → KS0 K± π∓ using Belle and Belle II data

I Adachi, L Aggarwal, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, T Aushev, V Aushev, M Aversano, R Ayad, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, M Barrett, J Baudot, M Bauer, A Baur

2023-09-01

We measure CP asymmetries and branching-fraction ratios for B^± → DK^± and Dπ^± decays with D → KS0 ..

Measurement of the τ -lepton mass with the Belle II experiment

I Adachi, K Adamczyk, L Aggarwal, H Ahmed, H Aihara, N Akopov, A Aloisio, N Anh Ky, DM Asner, H Atmacan, T Aushev, V Aushev, M Aversano, V Babu, H Bae, S Bahinipati, P Bambade, S Banerjee, M Barrett, J Baudot

2023-08-01

We present a measurement of the τ-lepton mass using a sample of about 175 million e+e-→τ+τ- events collected with the Belle II det..

Observation of a threshold cusp at the Λη threshold in the pK- mass spectrum with Λc →pK-π decays

SB Yang, K Tanida, JK Ahn, I Adachi, H Aihara, DM Asner, H Atmacan, V Aulchenko, T Aushev, R Ayad, V Babu, P Behera, K Belous, J Bennett, M Bessner, V Bhardwaj, B Bhuyan, D Bodrov, J Borah, A Bozek

2023-08-01

We observe a narrow peaking structure in the pK- invariant-mass spectrum near the Λη threshold. The peak is clearly seen in 1.5 mi..

First Observation of Λπ and Λπ- Signals near the K ¯ N (I=1) Mass Threshold in Λc → Λπ π π- Decay

Y Ma, J Yelton, K Tanida, I Adachi, JK Ahn, H Aihara, S Al Said, DM Asner, H Atmacan, T Aushev, R Ayad, V Babu, S Bahinipati, S Banerjee, P Behera, K Belous, J Bennett, M Bessner, B Bhuyan, T Bilka

2023-04-14

Using the data sample of 980 fb-1 collected with the Belle detector operating at the KEKB asymmetric-energy e+e- collider, we pres..

Study of e e- → ς0 ς ¯ 0 and ς ς ¯ - by initial state radiation method at Belle

G Gong, LK Li, Y Zhang, W Yan, I Adachi, H Aihara, S Al Said, DM Asner, H Atmacan, T Aushev, R Ayad, V Babu, S Banerjee, P Behera, K Belous, J Bennett, M Bessner, B Bhuyan, T Bilka, D Biswas

2023-04-01

The processes e+e-→ς0ς¯0 and e+e-→ς+ς¯- are studied using initial-state-radiation events in a sample of 980 fb-1 collected with th..