Lepton-Flavor-Dependent Angular Analysis of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:msup><mml:mi>K</mml:mi><mml:mo>*</mml:mo></mml:msup><mml:msup><mml:mo>ℓ</mml:mo><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mo>ℓ</mml:mo><mml:mo>−</mml:mo></mml:msup></mml:math>
S. WehleDeutsches Elektronen-Synchrotron, 22607 HamburgC. NiebuhrDeutsches Elektronen-Synchrotron, 22607 HamburgS. YashchenkoDeutsches Elektronen-Synchrotron, 22607 HamburgI. AdachiHigh Energy Accelerator Research Organization (KEK), Tsukuba 305-0801H. AiharaDepartment of Physics, University of Tokyo, Tokyo 113-0033S. Al SaidDepartment of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589D. M. AsnerPacific Northwest National Laboratory, Richland, Washington 99352V. AulchenkoBudker Institute of Nuclear Physics SB RAS, Novosibirsk 630090Tagir AushevMoscow Institute of Physics and Technology, Moscow Region 141700R. AyadDepartment of Physics, Faculty of Science, University of Tabuk, Tabuk 71451T. AzizTata Institute of Fundamental Research, Mumbai 400005V. BabuTata Institute of Fundamental Research, Mumbai 400005A. M. BakichSchool of Physics, University of Sydney, New South Wales 2006V. BansalPacific Northwest National Laboratory, Richland, Washington 99352E. L. BarberioSchool of Physics, University of Melbourne, Victoria 3010W. BartelDeutsches Elektronen-Synchrotron, 22607 HamburgP. K. BeheraIndian Institute of Technology Madras, Chennai 600036B. BhuyanIndian Institute of Technology Guwahati, Assam 781039J. P. BiswalJ. Stefan Institute, 1000 LjubljanaA. BobrovBudker Institute of Nuclear Physics SB RAS, Novosibirsk 630090A. BondarBudker Institute of Nuclear Physics SB RAS, Novosibirsk 630090G. BonviciniWayne State University, Detroit, Michigan 48202A. BożekH. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342M. BračkoJ. Stefan Institute, 1000 LjubljanaT. E. BrowderUniversity of Hawaii, Honolulu, Hawaii 96822D. ČervenkovFaculty of Mathematics and Physics, Charles University, 121 16 PragueP. ChangDepartment of Physics, National Taiwan University, Taipei 10617V. ChekelianMax-Planck-Institut für Physik, 80805 MünchenK. F. ChenNational Central University, Chung-li 32054B. G. CheonHanyang University, Seoul 133-791K. ChilikinMoscow Physical Engineering Institute, Moscow 115409R. ChistovMoscow Physical Engineering Institute, Moscow 115409K. ChoKorea Institute of Science and Technology Information, Daejeon 305-806Y. ChoiSungkyunkwan University, Suwon 440-746D. CinabroWayne State University, Detroit, Michigan 48202N. DashIndian Institute of Technology Bhubaneswar, Satya Nagar 751007J. DingfelderUniversity of Bonn, 53115 BonnZ. DoležalFaculty of Mathematics and Physics, Charles University, 121 16 PragueZ. DrásalFaculty of Mathematics and Physics, Charles University, 121 16 PragueD. DuttaTata Institute of Fundamental Research, Mumbai 400005S. EidelmanBudker Institute of Nuclear Physics SB RAS, Novosibirsk 630090D. EpifanovBudker Institute of Nuclear Physics SB RAS, Novosibirsk 630090H. FarhatWayne State University, Detroit, Michigan 48202J. E. FastPacific Northwest National Laboratory, Richland, Washington 99352T. FerberDeutsches Elektronen-Synchrotron, 22607 HamburgB. G. FulsomPacific Northwest National Laboratory, Richland, Washington 99352V. GaurTata Institute of Fundamental Research, Mumbai 400005N. GabyshevBudker Institute of Nuclear Physics SB RAS, Novosibirsk 630090A. GarmashBudker Institute of Nuclear Physics SB RAS, Novosibirsk 630090R. GillardWayne State University, Detroit, Michigan 48202P. GoldenzweigInstitut für Experimentelle Kernphysik, Karlsruher Institut für Technologie, 76131 KarlsruheB. GolobFaculty of Mathematics and Physics, University of Ljubljana, 1000 LjubljanaO. GrzymkowskaH. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342E. GuidoINFN-Sezione di Torino, 10125 TorinoJ. HabaHigh Energy Accelerator Research Organization (KEK), Tsukuba 305-0801T. HaraHigh Energy Accelerator Research Organization (KEK), Tsukuba 305-0801K. HayasakaNiigata University, Niigata 950-2181H. HayashiiNara Women's University, Nara 630-8506M. T. HedgesUniversity of Hawaii, Honolulu, Hawaii 96822W.-S. HouDepartment of Physics, National Taiwan University, Taipei 10617C.-L. HsuSchool of Physics, University of Melbourne, Victoria 3010T. IijimaGraduate School of Science, Nagoya University, Nagoya 464-8602K. InamiGraduate School of Science, Nagoya University, Nagoya 464-8602G. IngugliaDeutsches Elektronen-Synchrotron, 22607 HamburgA. IshikawaDepartment of Physics, Tohoku University, Sendai 980-8578R. ItohHigh Energy Accelerator Research Organization (KEK), Tsukuba 305-0801Y. IwasakiHigh Energy Accelerator Research Organization (KEK), Tsukuba 305-0801W. W. JacobsIndiana University, Bloomington, Indiana 47408I. JaegléUniversity of Florida, Gainesville, Florida 32611H. B. JeonKyungpook National University, Daegu 702-701Y. JinDepartment of Physics, University of Tokyo, Tokyo 113-0033D. JoffeKennesaw State University, Kennesaw, Georgia 30144K. K. JooChonnam National University, Kwangju 660-701T. JuliusSchool of Physics, University of Melbourne, Victoria 3010A. B. KaliyarIndian Institute of Technology Madras, Chennai 600036K. H. KangKyungpook National University, Daegu 702-701G. KaryanDeutsches Elektronen-Synchrotron, 22607 HamburgP. KatrenkoMoscow Institute of Physics and Technology, Moscow Region 141700T. KawasakiNiigata University, Niigata 950-2181H. KichimiHigh Energy Accelerator Research Organization (KEK), Tsukuba 305-0801C. KieslingMax-Planck-Institut für Physik, 80805 MünchenD. Y. KimSoongsil University, Seoul 156-743H. J. KimKyungpook National University, Daegu 702-701J. B. KimKorea University, Seoul 136-713K. T. KimKorea University, Seoul 136-713M. J. KimKyungpook National University, Daegu 702-701S. H. KimHanyang University, Seoul 133-791K. KinoshitaUniversity of Cincinnati, Cincinnati, Ohio 45221L. KochJustus-Liebig-Universität Gießen, 35392 GießenP. KodyšFaculty of Mathematics and Physics, Charles University, 121 16 PragueS. KorparJ. Stefan Institute, 1000 LjubljanaD. KotchetkovUniversity of Hawaii, Honolulu, Hawaii 96822P. KrižanFaculty of Mathematics and Physics, University of Ljubljana, 1000 LjubljanaP. KrokovnyBudker Institute of Nuclear Physics SB RAS, Novosibirsk 630090T. KuhrLudwig Maximilians University, 80539 MunichR. KulasiriKennesaw State University, Kennesaw, Georgia 30144T. KumitaTokyo Metropolitan University, Tokyo 192-0397A. KuzminBudker Institute of Nuclear Physics SB RAS, Novosibirsk 630090Y.-J. KwonYonsei University, Seoul 120-749J. S. LangeJustus-Liebig-Universität Gießen, 35392 Gießen
2017lv
ABI
Аннотация
We present a measurement of angular observables and a test of lepton flavor universality in the $B\ensuremath{\rightarrow}{K}^{*}{\ensuremath{\ell}}^{+}{\ensuremath{\ell}}^{\ensuremath{-}}$ decay, where $\ensuremath{\ell}$ is either $e$ or $\ensuremath{\mu}$. The analysis is performed on a data sample corresponding to an integrated luminosity of $711\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ containing $772\ifmmode\times\else\texttimes\fi{}1{0}^{6}$ $B\overline{B}$ pairs, collected at the $\mathrm{\ensuremath{\Upsilon}}(4S)$ resonance with the Belle detector at the asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider KEKB. The result is consistent with standard model (SM) expectations, where the largest discrepancy from a SM prediction is observed in the muon modes with a local significance of $2.6\ensuremath{\sigma}$.
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