Test of Lepton-Flavor Universality in B→K^{*}ℓ^{+}ℓ^{-} Decays at Belle

S Wehle¹, I Adachi^{2

3}, K Adamczyk⁴, H Aihara⁵, D M Asner⁶, H Atmacan⁷, V Aulchenko^{8

9}, T Aushev¹⁰, R Ayad¹¹, V Babu¹, P Behera¹², M Berger¹³, V Bhardwaj¹⁴, J Biswal¹⁵, A Bozek⁴, M Bračko^{15

16}, T E Browder¹⁷, M Campajola^{18

19}, L Cao²⁰, M-C Chang²¹, A Chen²², B G Cheon²³, K Chilikin²⁴, K Cho²⁵, Y Choi²⁶, S Choudhury²⁷, D Cinabro²⁸, S Cunliffe¹, N Dash¹², G De Nardo^{18

19}, F Di Capua^{18

19}, S Dubey¹⁷, S Eidelman^{8

24

9}, D Epifanov^{8

9}, T Ferber¹, B G Fulsom²⁹, R Garg³⁰, V Gaur³¹, N Gabyshev^{8

9}, A Garmash^{8

9}, A Giri²⁷, P Goldenzweig³², D Greenwald³³, Y Guan⁷, J Haba^{2

3}, O Hartbrich¹⁷, K Hayasaka³⁴, H Hayashii³⁵, M T Hedges¹⁷, T Higuchi³⁶, W-S Hou³⁷, C-L Hsu³⁸, T Iijima^{39

40}, K Inami³⁹, G Inguglia⁴¹, A Ishikawa^{2

3}, R Itoh^{2

3}, M Iwasaki⁴², Y Iwasaki³, W W Jacobs⁴³, S Jia⁴⁴, Y Jin⁵, D Joffe⁴⁵, J Kahn³², A B Kaliyar⁴⁶, G Karyan¹, H Kichimi³, D Y Kim⁴⁷, K T Kim⁴⁸, S H Kim⁴⁹, Y-K Kim⁵⁰, K Kinoshita⁷, I Komarov¹, S Korpar^{15

16}, D Kotchetkov¹⁷, R Kroeger⁵¹, P Krokovny^{8

9}, T Kuhr⁵², R Kulasiri⁴⁵, R Kumar⁵³, K Kumara²⁸, A Kuzmin^{8

9}, Y-J Kwon⁵⁰, J S Lange⁵⁴, J Y Lee⁴⁹, S C Lee⁵⁵, Y B Li⁵⁶, J Libby¹², Z Liptak⁵⁷, D Liventsev^{3

28}, T Luo⁴⁴, J MacNaughton⁵⁸, M Masuda^{59

60}, T Matsuda⁵⁸, J T McNeil⁶¹, M Merola^{18

19}, F Metzner³², H Miyata³⁴, R Mizuk^{10

24}, G B Mohanty⁴⁶, T J Moon⁴⁹, R Mussa⁶², M Nakao^{2

3}, A Natochii¹⁷, M Nayak⁶³, C Niebuhr¹, M Niiyama⁶⁴, N K Nisar⁶, S Nishida^{2

3}, K Ogawa³⁴, S Ogawa⁶⁵, H Ono^{66

34}, Y Onuki⁵, P Pakhlov^{24

67}, G Pakhlova^{10

24}, H Park⁵⁵, S-H Park⁵⁰, T K Pedlar⁶⁸, R Pestotnik¹⁵, L E Piilonen³¹, T Podobnik^{15

69}, V Popov¹⁰, E Prencipe⁷⁰, M T Prim³², P K Resmi¹², M Ritter⁵², A Rostomyan¹, N Rout¹², G Russo¹⁹, D Sahoo⁴⁶, Y Sakai^{2

3}, S Sandilya⁷, A Sangal⁷, L Santelj^{15

69}, V Savinov⁷¹, O Schneider⁷², G Schnell^{73

74}, J Schueler¹⁷, C Schwanda⁴¹, A J Schwartz⁷, Y Seino³⁴, K Senyo⁷⁵, M E Sevior⁷⁶, M Shapkin⁷⁷, J-G Shiu³⁷, B Shwartz^{8

9}, E Solovieva²⁴, M Starič¹⁵, J F Strube²⁹, T Sumiyoshi⁷⁸, W Sutcliffe²⁰, M Takizawa^{79

80}, U Tamponi⁶², K Tanida⁸¹, Y Tao⁶¹, F Tenchini¹, K Trabelsi⁸², M Uchida⁸³, T Uglov^{10

24}, Y Unno²³, S Uno^{2

3}, Y Ushiroda^{2

3}, S E Vahsen¹⁷, R Van Tonder²⁰, G Varner¹⁷, K E Varvell³⁸, V Vorobyev^{8

24

9}, C H Wang⁸⁴, M-Z Wang³⁷, P Wang⁸⁵, X L Wang⁴⁴, E Won⁴⁸, X Xu⁸⁶, S B Yang⁴⁸, H Ye¹, J H Yin⁴⁸, C Z Yuan⁸⁵, Z P Zhang⁸⁷, V Zhilich^{8

9}, V Zhukova²⁴, V Zhulanov^{8

9}; Belle Collaboration

Affiliations

¹ Deutsches Elektronen-Synchrotron, 22607 Hamburg.
² SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193.
³ High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
⁴ H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342.
⁵ Department of Physics, University of Tokyo, Tokyo 113-0033.
⁶ Brookhaven National Laboratory, Upton, New York 11973.
⁷ University of Cincinnati, Cincinnati, Ohio 45221.
⁸ Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.
⁹ Novosibirsk State University, Novosibirsk 630090.
¹⁰ Higher School of Economics (HSE), Moscow 101000.
¹¹ Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451.
¹² Indian Institute of Technology Madras, Chennai 600036.
¹³ Stefan Meyer Institute for Subatomic Physics, Vienna 1090.
¹⁴ Indian Institute of Science Education and Research Mohali, SAS Nagar, 140306.
¹⁵ J. Stefan Institute, 1000 Ljubljana.
¹⁶ University of Maribor, 2000 Maribor.
¹⁷ University of Hawaii, Honolulu, Hawaii 96822.
¹⁸ INFN-Sezione di Napoli, 80126 Napoli.
¹⁹ Università di Napoli Federico II, 80126 Napoli.
²⁰ University of Bonn, 53115 Bonn.
²¹ Department of Physics, Fu Jen Catholic University, Taipei 24205.
²² National Central University, Chung-li 32054.
²³ Department of Physics and Institute of Natural Sciences, Hanyang University, Seoul 04763.
²⁴ P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991.
²⁵ Korea Institute of Science and Technology Information, Daejeon 34141.
²⁶ Sungkyunkwan University, Suwon 16419.
²⁷ Indian Institute of Technology Hyderabad, Telangana 502285.
²⁸ Wayne State University, Detroit, Michigan 48202.
²⁹ Pacific Northwest National Laboratory, Richland, Washington 99352.
³⁰ Panjab University, Chandigarh 160014.
³¹ Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061.
³² Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe.
³³ Department of Physics, Technische Universität München, 85748 Garching.
³⁴ Niigata University, Niigata 950-2181.
³⁵ Nara Women's University, Nara 630-8506.
³⁶ Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa 277-8583.
³⁷ Department of Physics, National Taiwan University, Taipei 10617.
³⁸ School of Physics, University of Sydney, New South Wales 2006.
³⁹ Graduate School of Science, Nagoya University, Nagoya 464-8602.
⁴⁰ Kobayashi-Maskawa Institute, Nagoya University, Nagoya 464-8602.
⁴¹ Institute of High Energy Physics, Vienna 1050.
⁴² Osaka City University, Osaka 558-8585.
⁴³ Indiana University, Bloomington, Indiana 47408.
⁴⁴ Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443.
⁴⁵ Kennesaw State University, Kennesaw, Georgia 30144.
⁴⁶ Tata Institute of Fundamental Research, Mumbai 400005.
⁴⁷ Soongsil University, Seoul 06978.
⁴⁸ Korea University, Seoul 02841.
⁴⁹ Seoul National University, Seoul 08826.
⁵⁰ Yonsei University, Seoul 03722.
⁵¹ University of Mississippi, University, Mississippi 38677.
⁵² Ludwig Maximilians University, 80539 Munich.
⁵³ Punjab Agricultural University, Ludhiana 141004.
⁵⁴ Justus-Liebig-Universität Gießen, 35392 Gießen.
⁵⁵ Kyungpook National University, Daegu 41566.
⁵⁶ Peking University, Beijing 100871.
⁵⁷ Hiroshima Institute of Technology, Hiroshima 731-5193.
⁵⁸ University of Miyazaki, Miyazaki 889-2192.
⁵⁹ Research Center for Nuclear Physics, Osaka University, Osaka 567-0047.
⁶⁰ Earthquake Research Institute, University of Tokyo, Tokyo 113-0032.
⁶¹ University of Florida, Gainesville, Florida 32611.
⁶² INFN-Sezione di Torino, 10125 Torino.
⁶³ School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978.
⁶⁴ Kyoto Sangyo University, Kyoto 603-8555.
⁶⁵ Toho University, Funabashi 274-8510.
⁶⁶ Nippon Dental University, Niigata 951-8580.
⁶⁷ Moscow Physical Engineering Institute, Moscow 115409.
⁶⁸ Luther College, Decorah, Iowa 52101.
⁶⁹ Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana.
⁷⁰ Forschungszentrum Jülich, 52425 Jülich.
⁷¹ University of Pittsburgh, Pittsburgh, Pennsylvania 15260.
⁷² École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015.
⁷³ University of the Basque Country UPV/EHU, 48080 Bilbao.
⁷⁴ IKERBASQUE, Basque Foundation for Science, 48013 Bilbao.
⁷⁵ Yamagata University, Yamagata 990-8560.
⁷⁶ School of Physics, University of Melbourne, Victoria 3010.
⁷⁷ Institute for High Energy Physics, Protvino 142281.
⁷⁸ Tokyo Metropolitan University, Tokyo 192-0397.
⁷⁹ J-PARC Branch, KEK Theory Center, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
⁸⁰ Showa Pharmaceutical University, Tokyo 194-8543.
⁸¹ Advanced Science Research Center, Japan Atomic Energy Agency, Naka 319-1195.
⁸² Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay.
⁸³ Tokyo Institute of Technology, Tokyo 152-8550.
⁸⁴ National United University, Miao Li 36003.
⁸⁵ Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049.
⁸⁶ Soochow University, Suzhou 215006.
⁸⁷ Department of Modern Physics and State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026.

PMID: 33961476
DOI: 10.1103/PhysRevLett.126.161801

Test of Lepton-Flavor Universality in B→K^{*}ℓ^{+}ℓ^{-} Decays at Belle

S Wehle et al. Phys Rev Lett. 2021.

. 2021 Apr 23;126(16):161801.

doi: 10.1103/PhysRevLett.126.161801.

Authors

Affiliations

¹ Deutsches Elektronen-Synchrotron, 22607 Hamburg.
² SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193.
³ High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
⁴ H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342.
⁵ Department of Physics, University of Tokyo, Tokyo 113-0033.
⁶ Brookhaven National Laboratory, Upton, New York 11973.
⁷ University of Cincinnati, Cincinnati, Ohio 45221.
⁸ Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090.
⁹ Novosibirsk State University, Novosibirsk 630090.
¹⁰ Higher School of Economics (HSE), Moscow 101000.
¹¹ Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451.
¹² Indian Institute of Technology Madras, Chennai 600036.
¹³ Stefan Meyer Institute for Subatomic Physics, Vienna 1090.
¹⁴ Indian Institute of Science Education and Research Mohali, SAS Nagar, 140306.
¹⁵ J. Stefan Institute, 1000 Ljubljana.
¹⁶ University of Maribor, 2000 Maribor.
¹⁷ University of Hawaii, Honolulu, Hawaii 96822.
¹⁸ INFN-Sezione di Napoli, 80126 Napoli.
¹⁹ Università di Napoli Federico II, 80126 Napoli.
²⁰ University of Bonn, 53115 Bonn.
²¹ Department of Physics, Fu Jen Catholic University, Taipei 24205.
²² National Central University, Chung-li 32054.
²³ Department of Physics and Institute of Natural Sciences, Hanyang University, Seoul 04763.
²⁴ P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow 119991.
²⁵ Korea Institute of Science and Technology Information, Daejeon 34141.
²⁶ Sungkyunkwan University, Suwon 16419.
²⁷ Indian Institute of Technology Hyderabad, Telangana 502285.
²⁸ Wayne State University, Detroit, Michigan 48202.
²⁹ Pacific Northwest National Laboratory, Richland, Washington 99352.
³⁰ Panjab University, Chandigarh 160014.
³¹ Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061.
³² Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe.
³³ Department of Physics, Technische Universität München, 85748 Garching.
³⁴ Niigata University, Niigata 950-2181.
³⁵ Nara Women's University, Nara 630-8506.
³⁶ Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo, Kashiwa 277-8583.
³⁷ Department of Physics, National Taiwan University, Taipei 10617.
³⁸ School of Physics, University of Sydney, New South Wales 2006.
³⁹ Graduate School of Science, Nagoya University, Nagoya 464-8602.
⁴⁰ Kobayashi-Maskawa Institute, Nagoya University, Nagoya 464-8602.
⁴¹ Institute of High Energy Physics, Vienna 1050.
⁴² Osaka City University, Osaka 558-8585.
⁴³ Indiana University, Bloomington, Indiana 47408.
⁴⁴ Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443.
⁴⁵ Kennesaw State University, Kennesaw, Georgia 30144.
⁴⁶ Tata Institute of Fundamental Research, Mumbai 400005.
⁴⁷ Soongsil University, Seoul 06978.
⁴⁸ Korea University, Seoul 02841.
⁴⁹ Seoul National University, Seoul 08826.
⁵⁰ Yonsei University, Seoul 03722.
⁵¹ University of Mississippi, University, Mississippi 38677.
⁵² Ludwig Maximilians University, 80539 Munich.
⁵³ Punjab Agricultural University, Ludhiana 141004.
⁵⁴ Justus-Liebig-Universität Gießen, 35392 Gießen.
⁵⁵ Kyungpook National University, Daegu 41566.
⁵⁶ Peking University, Beijing 100871.
⁵⁷ Hiroshima Institute of Technology, Hiroshima 731-5193.
⁵⁸ University of Miyazaki, Miyazaki 889-2192.
⁵⁹ Research Center for Nuclear Physics, Osaka University, Osaka 567-0047.
⁶⁰ Earthquake Research Institute, University of Tokyo, Tokyo 113-0032.
⁶¹ University of Florida, Gainesville, Florida 32611.
⁶² INFN-Sezione di Torino, 10125 Torino.
⁶³ School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978.
⁶⁴ Kyoto Sangyo University, Kyoto 603-8555.
⁶⁵ Toho University, Funabashi 274-8510.
⁶⁶ Nippon Dental University, Niigata 951-8580.
⁶⁷ Moscow Physical Engineering Institute, Moscow 115409.
⁶⁸ Luther College, Decorah, Iowa 52101.
⁶⁹ Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana.
⁷⁰ Forschungszentrum Jülich, 52425 Jülich.
⁷¹ University of Pittsburgh, Pittsburgh, Pennsylvania 15260.
⁷² École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015.
⁷³ University of the Basque Country UPV/EHU, 48080 Bilbao.
⁷⁴ IKERBASQUE, Basque Foundation for Science, 48013 Bilbao.
⁷⁵ Yamagata University, Yamagata 990-8560.
⁷⁶ School of Physics, University of Melbourne, Victoria 3010.
⁷⁷ Institute for High Energy Physics, Protvino 142281.
⁷⁸ Tokyo Metropolitan University, Tokyo 192-0397.
⁷⁹ J-PARC Branch, KEK Theory Center, High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801.
⁸⁰ Showa Pharmaceutical University, Tokyo 194-8543.
⁸¹ Advanced Science Research Center, Japan Atomic Energy Agency, Naka 319-1195.
⁸² Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay.
⁸³ Tokyo Institute of Technology, Tokyo 152-8550.
⁸⁴ National United University, Miao Li 36003.
⁸⁵ Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049.
⁸⁶ Soochow University, Suzhou 215006.
⁸⁷ Department of Modern Physics and State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026.

PMID: 33961476
DOI: 10.1103/PhysRevLett.126.161801

Abstract

We present a measurement of R_{K^{*}}, the branching fraction ratio B(B→K^{*}μ^{+}μ^{-})/B(B→K^{*}e^{+}e^{-}), for both charged and neutral B mesons. The ratio for the charged case R_{K^{*+}} is the first measurement ever performed. In addition, we report absolute branching fractions for the individual modes in bins of the squared dilepton invariant mass q^{2}. The analysis is based on a data sample of 711 fb^{-1}, containing 772×10^{6} BB[over ¯] events, recorded at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. The obtained results are consistent with standard model expectations.

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Test of Lepton-Flavor Universality in B→K^{*}ℓ^{+}ℓ^{-} Decays at Belle

Affiliations

Test of Lepton-Flavor Universality in B→K^{*}ℓ^{+}ℓ^{-} Decays at Belle

Authors

Affiliations

Abstract

LinkOut - more resources

Full Text Sources

Research Materials