Search for the decay Bs0→π0π0 at Belle

J Borah,D Cinabro,K Ogawa,M Merola,A Frey,A Budano,T Bilka,R Mussa,K Lalwani,A Sokolov,V Aulchenko,R Mizuk,L Li Gioi,G Schnell,D Wang,T Gu,M Masuda,M Campajola,E Won,R Dhamija,T Lam,I Adachi,A Rostomyan,C Kiesling,A Vossen,V Babu,C Hadjivasiliou,P Branchini,R Ayad,T Podobnik,F Tenchini,D Kalita,Z Natkaniec,A Korobov,T Pang,E Solovieva,V Savinov,G De Pietro,T Hara,T Kuhr,R Pestotnik,M Takizawa,J Libby,V Zhukova,S Paul,G Inguglia,J Park,M Starič,C Sharma,R Van Tonder,V Chekelian,M Kumar,A Garmash,U Tamponi,K Belous,M Watanabe,H Kichimi,N Ipsita,F Meier,S Das,Y Choi,K Trabelsi,D Herrmann,K Inami,Y Li,Y Unno,M Shapkin,V Bhardwaj,T Uglov,M Laurenza,S Patra,F Di Capua,G De Nardo,T Konno,S Korpar,S Sandilya,K Chilikin,P Oskin,S Halder,T Iijima,A Natochii,G Pakhlova,D Liventsev,Y Jin,K Kumara,A Passeri,T Sumiyoshi,P Pakhlov,D Narwal,Y Seino,V Zhilich,A Ishikawa,S Pardi,D Bodrov,E Graziani,M Bračko,W Shan,H Ono,M Röhrken,K Kinoshita,I Nakamura,S Uno,K Senyo,S Ogawa,P Goldenzweig,F Metzner,K Miyabayashi,H Hayashii,P Krokovny,P Križan,S Bahinipati,A Vinokurova,G Russo,S Choudhury,Y Onuki,S Nishida,B Bhuyan,L Nayak,R Itoh,C Schwanda,M Uchida,E Prencipe,M Sumihama,D Červenkov,V Gaur,T Aushev,T Luo,Y Sakai,D Matvienko,K Hayasaka,M Bessner,Y Yusa,J Yelton ,S B Yang ,A Bożek ,D Epifanov ,Y H Guan ,A B Kaliyar ,S K Choi ,B G Cheon ,Yuan Li ,D Ferlewicz ,Y.-K Kim ,Y Yook ,Z P Zhang ,K K Joo ,P Urquijo ,P K Behera ,W W Jacobs ,C.-L Hsu ,K.-H Kim ,M.-Z Wang ,M Nakao ,S.-J Cho ,F Simon ,E.-J Jang ,C Z Yuan ,M E Sevior ,J S Lange ,L K Li ,J B Singh ,K E Varvell ,T K Pedlar ,S Banerjee ,D M Asner ,T Kawasaki ,Rocky Bala Garg ,Seungcheol Lee ,C H Chen ,L Šantelj ,S.-H Park ,D Levit ,H E Cho ,A J Schwartz ,Y J Kwon ,G Varner ,Z S Stottler ,T V Dong ,J H Yin ,D Biswas ,K Gudkova ,Z Doležal ,Rajeev Kumar ,C H Kim ,N K Nisar ,G B Mohanty ,C P Shen ,A Giri ,M T Prim ,D Y Kim ,L E Piilonen ,W B Yan ,K Tanida ,S K Maurya ,M T Hedges ,J Dingfelder ,M Iwasaki ,S Vahsen ,K H Kang ,X P Xu ,H Aihara ,B G Fulsom ,B Yabsley ,W.-S Hou ,T E Browder ,Q Ji ,J V Bennett ,K Cho ,Y.-R Lin ,J G Shiu ,M Hernández Villanueva ,P Kodyš ,M C Chang

doi:10.1103/physrevd.107.l051101

Abstract

We report the results of the first search for the decay Bs0→π0π0 using 121.4 fb−1 of data collected at the ϒ(5S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. We observe no signal and set a 90% confidence level upper limit of 7.7×10−6 on the Bs0→π0π0 decay branching fraction.Received 23 January 2023Accepted 2 March 2023DOI:https://doi.org/10.1103/PhysRevD.107.L051101Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.Published by the American Physical SocietyPhysics Subject Headings (PhySH)Research AreasParticle decaysParticle interactionsPhysical SystemsBottom quarkMesonsStrange quarkPropertiesFlavor symmetriesTechniquesArtificial neural networksBayesian methodsCalorimetersGrid computingLepton collidersMonte Carlo methodsParticle data analysisParticles & Fields

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