Measurement of time-dependent CP violation parameters in &#36;&#36;{B}^{0}\to {K}_{\text{S}}^{0}{\pi }^{0}\gamma &#36;&#36; decays at Belle and Belle II

M Abumusabh; I Adachi; A Aggarwal; Y Ahn; H Aihara; M Akdag; N Akopov; S Alghamdi; M Alhakami; N Althubiti; K Amos; M Angelsmark; C Antonioli; K Arai; H Atmacan; T Aushev; V Aushev; R Ayad; V Babu; H Bae; NK Baghel; S Bahinipati; P Bambade; Sw Banerjee; S Bansal; M Barrett; M Bartl; J Baudot; A Beaubien; F Becherer; J Becker; GF Benfratello; JV Bennett; FU Bernlochner; V Bertacchi; M Bertemes; E Bertholet; M Bessner; S Bettarini; V Bhardwaj; B Bhuyan; F Bianchi; T Bilka; D Biswas; A Bobrov; D Bodrov; A Bondar; G Bonvicini; J Borah; A Boschetti; A Bozek; M Bračko; P Branchini; N Brenny; RA Briere; TE Browder; A Budano; S Bussino; F Callet; Q Campagna; M Campajola; L Cao; M Carminati; G Casarosa; C Cecchi; P Cheema; L Chen; BG Cheon; C Cheshta; H Chetri; K Chilikin; K Chirapatpimol; HE Cho; K Cho; S-J Cho; S-K Choi; S Choudhury; S Chutia; J Cochran; JA Colorado-Caicedo; I Consigny; L Corona; H Crotte Ledesma; S Cuccuini; JX Cui; S Das; E De La Cruz-Burelo; SA De La Motte; G de Marino; G De Nardo; G De Pietro; R de Sangro; M Destefanis; S Dey; R Dhayal; A Di Canto; J Dingfelder; Z Doležal; X Dong; DV Thanh; M Dorigo; G Dujany; P Ecker; D Epifanov; J Eppelt; R Farkas; P Feichtinger; T Ferber; T Fillinger; C Finck; G Finocchiaro; F Forti; A Frey; BG Fulsom; A Gabrielli; P Gagneja; E Ganiev; R Garg; G Gaudino; V Gaur; V Gautam; A Gaz; A Gellrich; G Ghevondyan; D Ghosh; H Ghumaryan; R Giordano; A Giri; P Gironella Gironell; B Gobbo; R Godang; O Gogota; W Gradl; E Graziani; D Greenwald; Y Guan; K Gudkova; I Haide; Y Han; K Hayasaka; H Hayashii; S Hazra; C Hearty; MT Hedges; A Heidelbach; G Heine; I Heredia de la Cruz; T Higuchi; M Hoek; M Hohmann; R Hoppe; P Horak; XT Hou; C-L Hsu; T Humair; T Iijima; K Inami; N Ipsita; A Ishikawa; R Itoh; M Iwasaki; P Jackson; D Jacobi; WW Jacobs; E-J Jang; QP Ji; S Jia; Y Jin; A Johnson; KK Joo; KH Kang; G Karyan; T Kawasaki; F Keil; C Kiesling; C Kim; DY Kim; H Kim; J-Y Kim; K-H Kim; K Kinoshita; P Kodyš; T Koga; S Kohani; A Korobov; S Korpar; E Kovalenko; R Kowalewski; P Križan; P Krokovny; T Kuhr; Y Kulii; R Kumar; K Kumara; T Kunigo; S Kurokawa; A Kuzmin; Y-J Kwon; S Lacaprara; Y-T Lai; T Lam; JS Lange; TS Lau; R Leboucher; H Lee; MJ Lee; P Leo; PM Lewis; C Li; LK Li; QM Li; SX Li; WZ Li; Y Li; YB Li; YP Liao; J Libby; J Lin; S Lin; Z Liptak; V Lisovskyi; C Liu; G Liu; MH Liu; QY Liu; ZQ Liu; D Liventsev; S Longo; A Lozar; T Lueck; JL Ma; Y Ma; M Maggiora; SP Maharana; R Maiti; G Mancinelli; R Manfredi; E Manoni; M Mantovano; D Marcantonio; M Marfoli; C Marinas; A Martens; T Martinov; L Massaccesi; M Masuda; T Matsuda; D Matvienko; SK Maurya; M Maushart; JA McKenna; Z Mediankin Gruberová; R Mehta; F Meier; D Meleshko; M Merola; C Miller; M Mirra; K Miyabayashi; H Miyake; R Mizuk; GB Mohanty; S Moneta; AL Moreira de Carvalho; H-G Moser; N Mudgal; Th Muller; H Murakami; R Mussa; M Nakao; Y Nakazawa; Z Natkaniec; A Natochii; M Neu; N Anh Ky; S Nishida; R Nomaru; S Ogawa; R Okubo; H Ono; Y Onuki; G Pakhlova; S Pardi; J Park; K Park; S-H Park; A Passeri; S Patra; TK Pedlar; M Piccolo; LE Piilonen; PLM Podesta-Lerma; T Podobnik; L Polat; A Prakash; V Prasad; C Praz; S Prell; E Prencipe; MT Prim; S Privalov; I Prudiiev; H Purwar; P Rados; S Raiz; K Ravindran; M Reif; S Reiter; L Reuter; D Ricalde Herrmann; I Ripp-Baudot; G Rizzo; SH Robertson; JM Roney; A Rostomyan; N Rout; G Russo; S Saha; L Salutari; DA Sanders; S Sandilya; L Santelj; C Santos; V Savinov; B Scavino; C Schmitt; J Schmitz; G Schnell; K Schoenning; C Schwanda; Y Seino; K Senyo; J Serrano; C Sfienti; W Shan; CP Shen; XD Shi; T Shillington; T Shimasaki; J-G Shiu; D Shtol; B Shwartz; A Sibidanov; F Simon; JB Singh; J Skorupa; A Soffer; A Sokolov; E Solovieva; S Spataro; K Špenko; B Spruck; M Starič; P Stavroulakis; S Stefkova; R Stroili; M Sumihama; M Takahashi; M Takizawa; U Tamponi; K Tanida; F Testa; A Thaller; O Tittel; R Tiwary; E Torassa; K Trabelsi; T Tien Manh; FF Trantou; I Tsaklidis; M Uchida; I Ueda; T Uglov; K Unger; Y Unno; K Uno; S Uno; JU Rehman; Y Ushiroda; VS Vismaya; R van Tonder; KE Varvell; M Veronesi; A Vinokurova; L Vitale; V Vobbilisetti; R Volpe; M Wakai; S Wallner; M-Z Wang; A Warburton; M Watanabe; S Watanuki; C Wessel; XP Xu; BD Yabsley; S Yamada; W Yan; WP Yan; J Yelton; K Yi; JH Yin; K Yoshihara; CZ Yuan; J Yuan; L Yuan; Y Yusa; L Zani; F Zeng; M Zeyrek; B Zhang; X Zhao; V Zhilich; QD Zhou; XY Zhou; L Zhu; R Žlebčík

Journal article

Measurement of time-dependent CP violation parameters in $${B}^{0}\to {K}_{\text{S}}^{0}{\pi }^{0}\gamma $$ decays at Belle and Belle II

M Abumusabh, I Adachi, A Aggarwal, Y Ahn, H Aihara, M Akdag, N Akopov, S Alghamdi, M Alhakami, N Althubiti, K Amos, M Angelsmark, C Antonioli, K Arai, H Atmacan, T Aushev, V Aushev, R Ayad, V Babu, H Bae Show all

Journal of High Energy Physics | Springer Science and Business Media LLC | Published : 2026

DOI: 10.1007/jhep09(2026)216

Open access

Abstract

A bstract We perform a measurement of time-dependent CP violation parameters in $${B}^{0}\to {K}_{\text{S}}^{0}{\pi }^{0}\gamma $$ decays using a dataset of approximately 772 × 10 6 and 521 × 10 6 Υ(4 S ) decays collected by the Belle and Belle II experiments, respectively. The measured parameters for the combined dataset in the K ..

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