Measurement of branching fractions of Λc →p KS0 KS0 and Λc →p KS0 η at Belle

LK Li; K Kinoshita; I Adachi; JK Ahn; H Aihara; S Al Said; DM Asner; T Aushev; R Ayad; V Babu; S Bahinipati; S Banerjee; P Behera; K Belous; J Bennett; M Bessner; B Bhuyan; T Bilka; D Biswas; A Bobrov; D Bodrov; G Bonvicini; J Borah; A Bozek; M Bračko; P Branchini; TE Browder; A Budano; M Campajola; D Červenkov; MC Chang; A Chen; BG Cheon; K Chilikin; K Cho; SJ Cho; Y Choi; S Choudhury; D Cinabro; S Das; G De Nardo; G De Pietro; R Dhamija; F Di Capua; J Dingfelder; Z DoleŽal; TV Dong; D Epifanov; T Ferber; D Ferlewicz; BG Fulsom; R Garg; V Gaur; A Garmash; A Giri; P Goldenzweig; B Golob; G Gong; E Graziani; Y Guan; K Gudkova; C Hadjivasiliou; S Halder; X Han; K Hayasaka; H Hayashii; MT Hedges; WS Hou; CL Hsu; K Inami; N Ipsita; A Ishikawa; R Itoh; M Iwasaki; WW Jacobs; EJ Jang; QP Ji; S Jia; Y Jin; KK Joo; KH Kang; T Kawasaki; CH Kim; DY Kim; KH Kim; YK Kim; P Kodyš; A Korobov; S Korpar; E Kovalenko; P KriŽan; P Krokovny; T Kuhr; M Kumar; R Kumar; K Kumara; YJ Kwon; T Lam; JS Lange; SC Lee

Journal article

Measurement of branching fractions of Λc →p KS0 KS0 and Λc →p KS0 η at Belle

LK Li, K Kinoshita, I Adachi, JK Ahn, H Aihara, S Al Said, DM Asner, T Aushev, R Ayad, V Babu, S Bahinipati, S Banerjee, P Behera, K Belous, J Bennett, M Bessner, B Bhuyan, T Bilka, D Biswas, A Bobrov Show all

Physical Review D | Published : 2023

DOI: 10.1103/PhysRevD.107.032004

Abstract

We present a study of a singly Cabibbo-suppressed decay Λc+→pKS0KS0 and a Cabibbo-favored decay Λc+→pKS0η based on 980 fb-1 of data collected by the Belle detector, operating at the KEKB energy-asymmetric e+e- collider. We measure their branching fractions relative to Λc+→pKS0: B(Λc+→pKS0KS0)/B(Λc+→pKS0)=(1.48±0.08±0.04)×10-2 and B(Λc+→pKS0η)/B(Λc+→pKS0)=(2.73±0.06±0.13)×10-1. Combining with the world average B(Λc+→pKS0), we have the absolute branching fractions, B(Λc+→pKS0KS0)=(2.35±0.12±0.07±0.12)×10-4 and B(Λc+→pKS0η)=(4.35±0.10±0.20±0.22)×10-3. The first and second uncertainties are statistical and systematic, respectively, while the third ones arise from the uncertainty on B(Λc+→pKS0). ..

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Phillip Urquijo Author

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Funding Acknowledgements

This work, based on data collected using the Belle detector, which was operated until June 2010, was supported by the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan, the Japan Society for the Promotion of Science (JSPS) , and the Tau-Lepton Physics Research Center of Nagoya University; the Australian Research Council including Grants No. DP180102629, No. DP170102389, No. DP17 0102204, No. DE220100462, No. DP150103061, No. FT130100303; Austrian Federal Ministry of Education, Science and Research (FWF) and FWF Austrian Science Fund No. P 31361-N36; the National Natural Science Foundation of China under Contracts No. 11675166, No. 11705209; No. 11975076; No. 12135005; No. 12175041; No. 12161141008; Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS) , Grant No. QYZDJ-SSW-SLH011; the Ministry of Education, Youth and Sports of the Czech Republic under Contract No. LTT17020; the Czech Science Foundation Grant No. 22-18469S; Horizon 2020 ERC Advanced Grant No. 884719 and ERC Starting Grant No. 947006 "InterLeptons" (European Union) ; the Carl Zeiss Foundation, the Deutsche Forschungsgemeinschaft, the Excellence Cluster Universe, and the VolkswagenStiftung; the Department of Atomic Energy (Project Identification No. RTI 4002) and the Department of Science and Technology of India; the Istituto Nazionale di Fisica Nucleare of Italy; National Research Foundation (NRF) of Korea Grants No. 2016R1D1A1B02012900, No. 2018R1A2B3003643, No. 2018R1A6A1A06024970, No. RS202200197659, No. 2019R1I1A3A01058933, No. 2021R1A6A1A03043957, No. 2021R1F1A1060423, No. 2021R1F1A1064008, No. 2022R1A2C1003993; Radiation Science Research Institute, Foreign Large-size Research Facility Application Supporting project, the Global Science Experimental Data Hub Center of the Korea Institute of Science and Technology Information and KREONET/GLORIAD; the Polish Ministry of Science and Higher Education and the National Science Center; the Ministry of Science and Higher Education of the Russian Federation, Agreement No. 14.W03.31.0026, and the HSE University Basic Research Program, Moscow; University of Tabuk research Grants No. S-1440-0321, No. S-0256-1438, and No. S-0280-1439 (Saudi Arabia) ; the Slovenian Research Agency Grant No. J1-9124 and No. P1-0135; Ikerbasque, Basque Foundation for Science, Spain; the Swiss National Science Foundation; the Ministry Education and the Ministry of Science and Technology of Taiwan; and the United States Department of Energy and the National Science Foundation. These acknowledgements are not to be interpreted as an endorsement any statement made by any of our institutes, funding agencies, governments, or their representatives. We thank the KEKB group for the excellent operation of the accelerator; the KEK cryogenics group for the efficient operation of the solenoid; and the KEK computer group and the Pacific Northwest National Laboratory (PNNL) Environmental Molecular Sciences Laboratory (EMSL) computing group for strong computing support; and the National Institute of Informatics, and Science Information NETwork 6 (SINET6) for valuable network support. We thank Li-Sheng Geng and Ju-Jun Xie for helpful discussions on the N* (1535) .