Search for charged lepton flavor violating decays of ϒ (1S)

S Patra ,S Bahinipati ,Xiaolong Xu ,D Bodrov ,Y Unno ,Jagbir Singh ,T V Dong ,E Solovieva ,M E Sevior ,I Adachi ,K Inami ,D Wang ,C H Wang ,K Kumara ,L E Piilonen ,N K Nisar ,S Ogawa ,G Pakhlova ,K Senyo ,M Campajola ,A Martini ,F Di Capua ,V Popov ,Ramanuj Kumar ,A Sokolov ,Hiroyuki Ono ,M.-C Chang ,C H Li ,S Cunliffe ,K Chilikin ,R B Garg ,K Trabelsi ,S.-J Cho ,F Tenchini ,T Sanuki ,S B Yang ,K Miyabayashi ,R Mizuk ,P Urquijo ,Villanueva ,S Pardi ,D Epifanov ,Y Iwasaki ,M Bračko ,Deepak Kumar Sahoo ,A Korobov ,J G Shiu ,A Vinokurova ,M T Prim ,J Dingfelder ,C Z Yuan ,D M Asner ,M Kumar ,E Kovalenko ,C Kiesling ,V Zhilich ,T Sumiyoshi ,G Inguglia ,M Nayak ,S C Lee ,M Shapkin ,K T Kim ,J Yelton ,T Kuhr ,T Uglov ,P Goldenzweig ,J H Yin ,H Atmacan ,M Iwasaki ,F Metzner ,S Al Said ,K Lalwani ,M T Hedges ,K Belous ,G B Mohanty ,H E Cho ,D Cinabro ,A Ishikawa ,D Liventsev ,G Karyan ,S Choi ,A Budano ,A Chen ,A Bobrov ,L Nayak ,Y.-K Kim ,K Ogawa ,B Shwartz ,M Starič ,Z Doležal ,T K Pedlar ,U Tamponi ,Y Yusa ,E Prencipe ,L Li Gioi ,P Krokovny ,N Gabyshev ,E Graziani ,Y B Li ,P Chang ,T Matsuda ,T E Browder ,M Takizawa ,P K Behera ,A Rostomyan ,G De Nardo ,S Watanuki ,S.-H Park ,Y Seino ,C.-L Hsu ,Z S Stottler ,D Y Kim ,S Sandilya ,B D Yabsley ,A Vossen ,R Dhamija ,W Yan ,R Ayad ,Z P Zhang ,J V Bennett ,H Aihara ,G De Pietro ,F Simon ,M Merola ,R Mussa ,A Kuzmin ,E Waheed ,C P Shen ,J Borah ,J S Lange ,E Wang ,M Röhrken ,D Matvienko ,T Aushev ,C Schwanda ,Y Li ,S Korpar ,S Choudhury ,A Natochii ,W W Jacobs ,D Červenkov ,R Pestotnik ,P Oskin ,B Bhuyan ,Y Usov ,L Šantelj ,T Konno ,S Jia ,T Podobnik ,T Bilka ,M Uchida ,G Varner ,K Lieret ,M Masuda ,H Ye ,A Giri ,W.-S Hou ,C Sharma ,A Sangal ,J Strube ,V Babu ,H Park ,R Itoh ,K Hayasaka ,A Passeri ,Y Jin ,J Li ,L K Li ,B G Cheon ,K Cho ,G Schnell ,M Bessner ,P Kodyš ,H Hayashii ,V Bhardwaj ,E.-J Jang ,K K Joo ,A Bożek ,Miranda Hernández ,T Gu ,C H Kim ,S Paul ,T Iijima ,S Nishida ,S Uno ,N Rout ,K H Kang ,A B Kaliyar ,T Ferber ,Y Choi ,R Van Tonder ,V Savinov ,M Sumihama ,M Nakao ,E Won ,A Frey ,R Kroeger ,P Pakhlov ,J Libby ,P Križan ,M.-Z Wang ,K Tanida ,Y Zhai ,K.-H Kim ,B G Fulsom ,Y J Kwon ,V Zhukova ,J Kahn ,T Hara ,V Gaur ,T Lam ,G Russo ,S Das ,T Pang ,K Kinoshita ,P Branchini ,Y Onuki ,T Kawasaki ,V Zhulanov

doi:10.1007/jhep05(2022)095

Search for charged lepton flavor violating decays of ϒ (1S)

S Patra , S Bahinipati + Show 217 more

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https://doi.org/10.1007/jhep05(2022)095

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Journal: Journal of High Energy Physics	Publication Date: May 16, 2022
Citations: 4	License type: open-access

Affiliation: Indian Institute of Science Education and Research Mohali

#Belle Detector #Branching Fractions + Show 6 more

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Abstract

We present a search for the charged lepton-flavor-violating decays ϒ(1S) →ℓ±ℓ′∓ and radiative charged lepton-flavour-violating decays ϒ(1S) → γℓ±ℓ′∓ [ℓ,ℓ′ = e, μ, τ] using the 158 million ϒ(2S) sample collected by the Belle detector at the KEKB collider. This search uses ϒ(1S) mesons produced in ϒ(2S) → π+π− ϒ(1S) transitions. We do not find any significant signal, so we provide upper limits on the branching fractions at the 90% confidence level.

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