Test of lepton flavor universality and search for lepton flavor violation in B -> Kll decays

Y. Li; Y. B. Li; C. P. Shen; I. Adachi; H. Aihara; D. M. Asner; H. Atmacan; V. Aulchenko; R. Ayad; V. Babu; I. Badhrees; A. M. Bakich; P. Behera; T. Bilka; J. Biswal; A. Bobrov; G. Bonvicini; A. Bozek; M. Bracko; T. E. Browder; M. Campajola; L. Cao; D. Cervenkov; P. Chang; A. Chen; B. G. Cheon; K. Chilikin; H. E. Cho; K. Cho; S. -K. Choi; Y. Choi; D. Cinabro; S. Cunliffe; G. De Nardo; F. Di Capua; S. Di Carlo; Z. Dolezal; T. V. Dong; S. Eidelman; J. E. Fast; T. Ferber; D. Ferlewicz; B. G. Fulsom; R. Garg; V. Gaur; N. Gabyshev; A. Garmash; A. Giri; P. Goldenzweig; B. Golob; B. Grube; T. Hara; K. Hayasaka; H. Hayashii; W. -S. Hou; C. -L. Hsu; T. Iijima; K. Inami; G. Inguglia; A. Ishikawa; R. Itoh; M. Iwasaki; Y. Iwasaki; W. W. Jacobs; S. Jia; Y. Jin; K. K. Joo; K. H. Kang; G. Karyan; H. Kichimi; C. H. Kim; D. Y. Kim; S. H. Kim; K. Kinoshita; P. Kodys; S. Korpar; R. Kroeger; P. Krokovny; T. Kuhr; R. Kulasiri; A. Kuzmin; Y. -J. Kwon; K. Lalwani; J. S. Lange; I. S. Lee; S. C. Lee; P. Lewis; C. H. Li; L. K. Li; L. Li Gioi; J. Libby; K. Lieret; D. Liventsev; C. MacQueen; M. Masuda; T. Matsuda; D. Matvienko; M. Merola; H. Miyata; R. Mizuk; R. Mussa; M. Nakao; K. J. Nath; M. Nayak; M. Niiyama; N. K. Nisar; S. Nishida; K. Nishimura; S. Ogawa; H. Ono; Y. Onuki; P. Oskin; P. Pakhlov; G. Pakhlova; T. Pang; S. Pardi; H. Park; S. -H. Park; S. Patra; S. Paul; T. K. Pedlar; R. Pestotnik; L. E. Piilonen; T. Podobnik; V. Popov; E. Prencipe; M. T. Prim; M. Roehrken; A. Rostomyan; N. Rout; G. Russo; D. Sahoo; Y. Sakai; S. Sandilya; L. Santelj; V. Savinov; O. Schneider; G. Schnell; C. Schwanda; Y. Seino; K. Senyo; M. E. Sevior; J. -G. Shiu; B. Shwartz; A. Sokolov; E. Solovieva; S. Stanic; M. Staric; Z. S. Stottler; M. Sumihama; T. Sumiyoshi; W. Sutcliffe; M. Takizawa; K. Tanida; F. Tenchini; K. Trabelsi; M. Uchida; T. Uglov; Y. Unno; S. Uno; R. Van Tonder; G. Varner; A. Vinokurova; C. H. Wang; M. -Z. Wang; X. L. Wang; M. Watanabe; E. Won; S. B. Yang; H. Ye; J. Yelton; J. H. Yin; C. Z. Yuan; Z. P. Zhang; V. Zhilich; V. Zhukova; V. Zhulanov; Belle Collaboration

doi:10.1007/JHEP03(2021)105

Back

Test of lepton flavor universality and search for lepton flavor violation in B -> Kll decays

Journal article

Open access

Peer reviewed

Test of lepton flavor universality and search for lepton flavor violation in B -> Kll decays

Y. Li, Y. B. Li, C. P. Shen, I. Adachi, H. Aihara, D. M. Asner, H. Atmacan, V. Aulchenko, R. Ayad, V. Babu, …

The journal of high energy physics, Vol.2021(3), pp.1-24

01/03/2021

DOI: https://doi.org/10.1007/JHEP03(2021)105

Abstract

Physical Sciences

Physics

Physics, Particles & Fields

Science & Technology

We present measurements of the branching fractions for the decays B -> K mu(+)mu(-) and B -> Ke(+)e(-), and their ratio (R-K), using a data sample of 711 fb(-1) that contains 772 x 10(6) B (B) over bar events. The data were collected at the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The ratio RK is measured in five bins of dilepton invariant-mass-squared (q(2)): q(2) is an element of (0.1, 4.0), (4.00, 8.12), (1.0, 6.0), (10.2, 12.8) and (> 14.18) GeV2/c(4), along with the whole q(2) region. The R-K value for q(2) is an element of (1.0, 6.0) GeV2/c(4) is 1.03(-0.24)(+0.28) +/- 0.01. The first and second uncertainties listed are statistical and systematic, respectively. All results for R-K are consistent with Standard Model predictions. We also measure CP-averaged isospin asymmetries in the same q(2) bins. The results are consistent with a null asymmetry, with the largest difference of 2.6 standard deviations occurring for the q(2) is an element of (1.0, 6.0) GeV2/c(4) bin in the mode with muon final states. The measured differential branching fractions, dB/dq(2), are consistent with theoretical predictions for charged B decays, while the corresponding values are below the expectations for neutral B decays. We have also searched for lepton-flavor-violating B -> K mu(+/-)e(-/+) decays and set 90% confidence-level upper limits on the branching fraction in the range of 10(-8) for B+ -> K+ mu(+/-)e(-/+), and B-0 -> K-0 mu(+/-) e(-/+) modes.

Files and links (1)

url

https://doi.org/10.1007/JHEP03(2021)105View

Published (Version of record) Open

Metrics

1 Record Views

See more details

Details

Title: Test of lepton flavor universality and search for lepton flavor violation in B -> Kll decays
Creators - without role: Y. Li - Beihang University
Y. B. Li - Peking University
C. P. Shen - Fudan University
I. Adachi - Grad Univ Adv Studies, SOKENDAI, Hayama, Kanagawa 2400193, Japan
H. Aihara - The University of Tokyo
D. M. Asner - Brookhaven Natl Lab, Upton, NY 11973 USA
H. Atmacan - University of South Carolina
V. Aulchenko - RAS, Budker Inst Nucl Phys SB, Novosibirsk 630090, Russia
R. Ayad - University of Tabuk
V. Babu - DESY, D-22607 Hamburg, Germany
I. Badhrees - King Abdulaziz City Sci & Technol, Riyadh 11442, Saudi Arabia
A. M. Bakich - University of Sydney
P. Behera - Indian Institute of Technology Madras
T. Bilka - Charles University
J. Biswal - J Stefan Inst, Ljubljana 1000, Slovenia
A. Bobrov - RAS, Budker Inst Nucl Phys SB, Novosibirsk 630090, Russia
G. Bonvicini - Wayne State University
A. Bozek - H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
M. Bracko - J Stefan Inst, Ljubljana 1000, Slovenia
T. E. Browder - University of Hawaii System
M. Campajola - INFN, Sez Napoli, I-80126 Naples, Italy
L. Cao - Karlsruher Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany
D. Cervenkov - Charles University
P. Chang - Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
A. Chen - Natl Cent Univ, Chungli 32054, Taiwan
B. G. Cheon - Hanyang University
K. Chilikin - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
H. E. Cho - Hanyang University
K. Cho - Korea Inst Sci & Technol Informat, Daejeon 34141, South Korea
S. -K. Choi - Gyeongsang Natl Univ, Jinju 52828, South Korea
Y. Choi - Sungkyunkwan University
D. Cinabro - Wayne State University
S. Cunliffe - DESY, D-22607 Hamburg, Germany
G. De Nardo - INFN, Sez Napoli, I-80126 Naples, Italy
F. Di Capua - INFN, Sez Napoli, I-80126 Naples, Italy
S. Di Carlo - University of Paris-Saclay
Z. Dolezal - Charles University
T. V. Dong - Fudan University
S. Eidelman - RAS, Budker Inst Nucl Phys SB, Novosibirsk 630090, Russia
J. E. Fast - Pacific Northwest Natl Lab, Richland, WA 99352 USA
T. Ferber - DESY, D-22607 Hamburg, Germany
D. Ferlewicz - University of Melbourne
B. G. Fulsom - Pacific Northwest Natl Lab, Richland, WA 99352 USA
R. Garg - Panjab University
V. Gaur - Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA
N. Gabyshev - RAS, Budker Inst Nucl Phys SB, Novosibirsk 630090, Russia
A. Garmash - RAS, Budker Inst Nucl Phys SB, Novosibirsk 630090, Russia
A. Giri - Indian Institute of Technology Hyderabad
P. Goldenzweig - Karlsruher Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany
B. Golob - J Stefan Inst, Ljubljana 1000, Slovenia
B. Grube - Tech Univ Munich, Dept Phys, D-85748 Garching, Germany
T. Hara - Grad Univ Adv Studies, SOKENDAI, Hayama, Kanagawa 2400193, Japan
K. Hayasaka - Niigata University
H. Hayashii - Nara Womens Univ, Nara 6308506, Japan
W. -S. Hou - Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
C. -L. Hsu - University of Sydney
T. Iijima - Nagoya University
K. Inami - Nagoya University
G. Inguglia - Inst High Energy Phys, A-1050 Vienna, Austria
A. Ishikawa - Grad Univ Adv Studies, SOKENDAI, Hayama, Kanagawa 2400193, Japan
R. Itoh - Grad Univ Adv Studies, SOKENDAI, Hayama, Kanagawa 2400193, Japan
M. Iwasaki - Osaka City University
Y. Iwasaki - KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan
W. W. Jacobs - Indiana University Bloomington
S. Jia - Beihang University
Y. Jin - The University of Tokyo
K. K. Joo - Chonnam Natl Univ, Gwangju 61186, South Korea
K. H. Kang - Kyungpook Natl Univ, Daegu 41566, South Korea
G. Karyan - DESY, D-22607 Hamburg, Germany
H. Kichimi - KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan
C. H. Kim - Hanyang University
D. Y. Kim - Soongsil University
S. H. Kim - Hanyang University
K. Kinoshita - University of Cincinnati
P. Kodys - Charles University
S. Korpar - J Stefan Inst, Ljubljana 1000, Slovenia
R. Kroeger - University of Mississippi
P. Krokovny - RAS, Budker Inst Nucl Phys SB, Novosibirsk 630090, Russia
T. Kuhr - Ludwig Maximilians Univ Munchen, D-80539 Munich, Germany
R. Kulasiri - Kennesaw State University
A. Kuzmin - RAS, Budker Inst Nucl Phys SB, Novosibirsk 630090, Russia
Y. -J. Kwon - Yonsei University
K. Lalwani - Malaviya Natl Inst Technol Jaipur, Jaipur 302017, Rajasthan, India
J. S. Lange - University of Giessen
I. S. Lee - Hanyang University
S. C. Lee - Kyungpook Natl Univ, Daegu 41566, South Korea
P. Lewis - University of Hawaii System
C. H. Li - Liaoning Normal University
L. K. Li - Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
L. Li Gioi - Max
J. Libby - Indian Institute of Technology Madras
K. Lieret - Ludwig Maximilians Univ Munchen, D-80539 Munich, Germany
D. Liventsev - KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan
C. MacQueen - University of Melbourne
M. Masuda - The University of Tokyo
T. Matsuda - University of Miyazaki
D. Matvienko - RAS, Budker Inst Nucl Phys SB, Novosibirsk 630090, Russia
M. Merola - INFN, Sez Napoli, I-80126 Naples, Italy
H. Miyata - Niigata University
R. Mizuk - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
R. Mussa - INFN, Sez Torino, I-10125 Turin, Italy
M. Nakao - Grad Univ Adv Studies, SOKENDAI, Hayama, Kanagawa 2400193, Japan
K. J. Nath - Indian Institute of Technology Guwahati
M. Nayak - KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan
M. Niiyama - Kyoto University
N. K. Nisar - University of Pittsburgh
S. Nishida - Grad Univ Adv Studies, SOKENDAI, Hayama, Kanagawa 2400193, Japan
K. Nishimura - University of Hawaii System
S. Ogawa - Toho University
H. Ono - Nippon Dent Univ, Niigata 9518580, Japan
Y. Onuki - The University of Tokyo
P. Oskin - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
P. Pakhlov - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
G. Pakhlova - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
T. Pang - University of Pittsburgh
S. Pardi - INFN, Sez Napoli, I-80126 Naples, Italy
H. Park - Kyungpook Natl Univ, Daegu 41566, South Korea
S. -H. Park - Yonsei University
S. Patra - Indian Inst Sci Educ & Res Mohali, Sas Nagar 140306, India
S. Paul - Tech Univ Munich, Dept Phys, D-85748 Garching, Germany
T. K. Pedlar - Luther Coll, Decorah, IA 52101 USA
R. Pestotnik - J Stefan Inst, Ljubljana 1000, Slovenia
L. E. Piilonen - Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA
T. Podobnik - J Stefan Inst, Ljubljana 1000, Slovenia
V. Popov - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
E. Prencipe - Forschungszentrum Jülich
M. T. Prim - Karlsruher Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany
M. Roehrken - DESY, D-22607 Hamburg, Germany
A. Rostomyan - DESY, D-22607 Hamburg, Germany
N. Rout - Indian Institute of Technology Madras
G. Russo - Univ Napoli Federico II, I-80055 Naples, Italy
D. Sahoo - Tata Institute of Fundamental Research
Y. Sakai - Grad Univ Adv Studies, SOKENDAI, Hayama, Kanagawa 2400193, Japan
S. Sandilya - University of Cincinnati
L. Santelj - KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan
V. Savinov - University of Pittsburgh
O. Schneider - Federal Reserve
G. Schnell - University of the Basque Country
C. Schwanda - Inst High Energy Phys, A-1050 Vienna, Austria
Y. Seino - Niigata University
K. Senyo - Yamagata University
M. E. Sevior - University of Melbourne
J. -G. Shiu - Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
B. Shwartz - RAS, Budker Inst Nucl Phys SB, Novosibirsk 630090, Russia
A. Sokolov - Inst High Energy Phys, Protvino 142281, Russia
E. Solovieva - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
S. Stanic - University of Nova Gorica
M. Staric - J Stefan Inst, Ljubljana 1000, Slovenia
Z. S. Stottler - Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA
M. Sumihama - Gifu University
T. Sumiyoshi - Tokyo Metropolitan University
W. Sutcliffe - Karlsruher Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany
M. Takizawa - Japan Proton Accelerator Research Complex
K. Tanida - Japan Atom Energy Agcy, Adv Sci Res Ctr, Naka, Ibaraki 3191195, Japan
F. Tenchini - DESY, D-22607 Hamburg, Germany
K. Trabelsi - University of Paris-Saclay
M. Uchida - Tokyo Institute of Technology
T. Uglov - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
Y. Unno - Hanyang University
S. Uno - Grad Univ Adv Studies, SOKENDAI, Hayama, Kanagawa 2400193, Japan
R. Van Tonder - Karlsruher Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany
G. Varner - University of Hawaii System
A. Vinokurova - RAS, Budker Inst Nucl Phys SB, Novosibirsk 630090, Russia
C. H. Wang - Natl United Univ, Miaoli 36003, Taiwan
M. -Z. Wang - Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
X. L. Wang - Fudan University
M. Watanabe - Niigata University
E. Won - University of Seoul
S. B. Yang - University of Seoul
H. Ye - DESY, D-22607 Hamburg, Germany
J. Yelton - Univ Florida, Gainesville, FL 32611 USA
J. H. Yin - Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
C. Z. Yuan - Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
Z. P. Zhang - Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
V. Zhilich - RAS, Budker Inst Nucl Phys SB, Novosibirsk 630090, Russia
V. Zhukova - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
V. Zhulanov - RAS, Budker Inst Nucl Phys SB, Novosibirsk 630090, Russia
Belle Collaboration
Publication Details: The journal of high energy physics, Vol.2021(3), pp.1-24
Publisher: Springer Nature
Number of pages: 24
Grant note: 11435013; 11475187; 11521505; 11575017; 11675166; 11705209 / National Natural Science Foundation of China; National Natural Science Foundation of China (NSFC) Ministry of Science and Technology of Taiwan; Ministry of Science and Technology, Taiwan Department of Science and Technology of India; Department of Science & Technology (India) Austrian Science Fund (FWF) CAS Center for Excellence in Particle Physics (CCEPP) 18PJ1401000 / Shanghai Pujiang Program Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) Istituto Nazionale di Fisica Nucleare of Italy; Istituto Nazionale di Fisica Nucleare (INFN) Ikerbasque, Basque Foundation for Science, Spain TauLepton Physics Research Center of Nagoya University Deutsche Forschungsgemeinschaft; German Research Foundation (DFG) Radiation Science Research Institute Polish Ministry of Science and Higher Education; Ministry of Science and Higher Education, Poland Japan Society for the Promotion of Science (JSPS); Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science Ministry of Education FT130100303 / Australian Research Council VolkswagenStiftung; Volkswagen Swiss National Science Foundation; Swiss National Science Foundation (SNSF) KREONET/GLORIAD Global Science Experimental Data Hub Center of the Korea Institute of Science and Technology Information LTT17020 / Ministry of Education, Youth and Sports of the Czech Republic; Ministry of Education, Youth & Sports - Czech Republic United States Department of Energy; United States Department of Energy (DOE) 14.W03.31.0026 / Russian Federation Government Slovenian Research Agency; Slovenian Research Agency - Slovenia National Science Foundation; National Science Foundation (NSF) Carl Zeiss Foundation DP180102629; DP170102389; DP170102204; DP150103061; FT130100303 / Australian Research Council QYZDJ-SSW-SLH011 / Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS) 2016R1D1A1B01010135; 2016R1D1A1B02012900; 2018R1A2B3003643; 2018R1A6A1A06024970; 2018R1D1A1B07047294; 2019K1A3A7A09033840 / National Research Foundation (NRF) of Korea; National Research Foundation of Korea National Science Center; National Science Centre, Poland
Identifiers: 9918869908331
Academic Unit: King Abdulaziz City for Science & Technology; University of Tabuk; King Abdullah University of Science & Technology
Language: English
Resource Type: Journal article