Search for the rare decay of B+ -> l(+)nu e gamma with improved hadronic tagging

M. Gelb; F. U. Bernlochner; P. Goldenzweig; F. Metzner; I. Adachi; H. Aihara; S. Al Said; D. M. Asner; H. Atmacan; T. Aushev; R. Ayad; V. Babu; I. Badhrees; V. Bansal; P. Behera; C. Beleno; B. Bhuyan; J. Biswal; A. Bobrov; M. Bracko; N. Braun; L. Cao; D. Cervenkov; V. Chekelian; A. Chen; B. G. Cheon; K. Chilikin; K. Cho; S-K. Choi; Y. Choi; S. Choudhury; D. Cinabro; S. Cunliffe; N. Dash; S. Di Carlo; Z. Dolezal; T. V. Dong; S. Eidelman; D. Epifanov; J. E. Fast; T. Ferber; A. Frey; B. G. Fulsom; R. Garg; V. Gaur; N. Gabyshev; A. Garmash; J. Gemmler; A. Giri; D. Greenwald; J. Haba; T. Hara; K. Hayasaka; H. Hayashii; W-S. Hou; K. Inami; G. Inguglia; A. Ishikawa; R. Itoh; M. Iwasaki; Y. Iwasaki; W. W. Jacobs; S. Jia; Y. Jin; D. Joffe; K. K. Joo; J. Kahn; A. B. Kaliyar; T. Kawasaki; H. Kichimi; C. Kiesling; D. Y. Kim; H. J. Kim; S. H. Kim; P. Kodys; S. Korpar; D. Kotchetkov; P. Krizan; R. Kroeger; P. Krokovny; T. Kuhr; R. Kulasiri; A. Kuzmin; Y-J. Kwon; J. S. Lange; I. S. Lee; J. K. Lee; J. Y. Lee; S. C. Lee; Y. B. Li; L. Li Gioi; J. Libby; D. Liventsev; P-C. Lu; M. Lubej; T. Luo; J. MacNaughton; M. Masuda; M. Merola; K. Miyabayashi; H. Miyata; R. Mizuk; G. B. Mohanty; T. Mori; M. Mrvar; R. Mussa; M. Nakao; K. J. Nath; Z. Natkaniec; M. Nayak; M. Niiyama; N. K. Nisar; S. Nishida; S. Ogawa; P. Pakhlov; G. Pakhlova; B. Pal; S. Pardi; S. Paul; T. K. Pedlar; R. Pestotnik; L. E. Piilonen; V. Popov; E. Prencipe; M. Prim; M. Ritter; A. Rostomyan; G. Russo; D. Sahoo; Y. Sakai; M. Salehi; S. Sandilya; L. Santelj; T. Sanuki; V. Savinov; O. Schneider; G. Schnell; J. Schueler; C. Schwanda; Y. Seino; K. Senyo; O. Seon; M. E. Sevior; C. P. Shen; T-A. Shibata; J-G. Shiu; B. Shwartz; F. Simon; E. Solovieva; S. Stanic; M. Staric; J. F. Strube; M. Sumihama; T. Sumiyoshi; W. Sutcliffe; M. Takizawa; K. Tanida; Y. Tao; F. Tenchini; M. Uchida; T. Uglov; Y. Unno; S. Uno; P. Urquijo; R. Van Tonder; G. Varner; K. E. Varvell; B. Wang; C. H. Wang; M-Z. Wang; P. Wang; X. L. Wang; M. Watanabe; S. Watanuki; E. Widmann; E. Won; H. Yamamoto; S. B. Yang; H. Ye; J. H. Yin; C. Z. Yuan; Y. Yusa; S. Zakharov; Z. P. Zhang; V. Zhilich; V. Zhukova; V. Zhulanov; Belle Collaboration

doi:10.1103/PhysRevD.98.112016

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Search for the rare decay of B+ -> l(+)nu e gamma with improved hadronic tagging

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Search for the rare decay of B+ -> l(+)nu e gamma with improved hadronic tagging

M. Gelb, F. U. Bernlochner, P. Goldenzweig, F. Metzner, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, T. Aushev, …

Physical review. D, Vol.98(11)

28/12/2018

DOI: https://doi.org/10.1103/PhysRevD.98.112016

Abstract

Astronomy & Astrophysics

Physical Sciences

Physics

Physics, Particles & Fields

Science & Technology

We present the result of the search for the rare B meson decay of B+ -> l(+)nu e gamma with l = e, mu. For the search the full data set recorded by the Belle experiment of 711 fb(-1) integrated luminosity near the Upsilon(4S) resonance is used. Signal candidates are reconstructed for photon energies E-gamma larger than 1 GeV using a novel multivariate tagging algorithm. The novel algorithm fully reconstructs the second B meson produced in the collision using hadronic modes and was specifically trained to recognize the signal signature in combination with hadronic tag-side B meson decays. This approach greatly enhances the performance. Background processes that can mimic this signature, mainly charmless semileptonic decays and continuum processes, are suppressed using multivariate methods. The number of signal candidates is determined by analyzing the missing mass squared distribution as inferred from the signal side particles and the kinematic properties of the tag-side B meson. No significant excess over the background-only hypothesis is observed and upper limits on the partial branching fraction Delta B with E-gamma > 1 GeV individually for electron and muon final states as well as for the average branching fraction of both lepton final states are reported. We find a Bayesian upper limit of Delta B(B+ -> l(+)nu el) < 3.0 x 10(-6) at 90% CL and also report an upper limit on the first inverse moment of the light-cone distribution amplitude of the B meson of lambda(B) > 0.24 GeV at 90% CL.

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Title: Search for the rare decay of B+ -> l(+)nu e gamma with improved hadronic tagging
Creators - without role: M. Gelb - Karlsruher Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany
F. U. Bernlochner - Karlsruher Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany
P. Goldenzweig - Karlsruher Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany
F. Metzner - Karlsruher Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany
I. Adachi - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
H. Aihara - The University of Tokyo
S. Al Said - King Abdulaziz University
D. M. Asner - Brookhaven Natl Lab, Upton, NY 11973 USA
H. Atmacan - University of South Carolina
T. Aushev - Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Region, Russia
R. Ayad - University of Tabuk
V. Babu - Tata Institute of Fundamental Research
I. Badhrees - King Abdulaziz City Sci & Technol, Riyadh 11442, Saudi Arabia
V. Bansal - Pacific Northwest Natl Lab, Richland, WA 99352 USA
P. Behera - Indian Institute of Technology Madras
C. Beleno - University of Göttingen
B. Bhuyan - Indian Institute of Technology Guwahati
J. Biswal - J Stefan Inst, Ljubljana 1000, Slovenia
A. Bobrov - Siberian Branch of the Russian Academy of Sciences
M. Bracko - J Stefan Inst, Ljubljana 1000, Slovenia
N. Braun - Karlsruher Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany
L. Cao - Karlsruher Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany
D. Cervenkov - Charles University
V. Chekelian - Max
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
K. Cho - Korea Inst Sci & Technol Informat, Daejeon 305806, South Korea
S-K. Choi - Gyeongsang Natl Univ, Chinju 660701, South Korea
Y. Choi - Sungkyunkwan University
S. Choudhury - Indian Institute of Technology Hyderabad
D. Cinabro - Wayne State University
S. Cunliffe - DESY, D-22607 Hamburg, Germany
N. Dash - Indian Institute of Technology Bhubaneswar
S. Di Carlo - University of Paris-Saclay
Z. Dolezal - Charles University
T. V. Dong - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
S. Eidelman - Siberian Branch of the Russian Academy of Sciences
D. Epifanov - Siberian Branch of the Russian Academy of Sciences
J. E. Fast - Pacific Northwest Natl Lab, Richland, WA 99352 USA
T. Ferber - DESY, D-22607 Hamburg, Germany
A. Frey - University of Göttingen
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 - Siberian Branch of the Russian Academy of Sciences
A. Garmash - Siberian Branch of the Russian Academy of Sciences
J. Gemmler - Karlsruher Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany
A. Giri - Indian Institute of Technology Hyderabad
D. Greenwald - Tech Univ Munich, Dept Phys, D-85748 Garching, Germany
J. Haba - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
T. Hara - SOKENDAI Grad Univ Adv Studies, Hayama 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
K. Inami - Nagoya University
G. Inguglia - DESY, D-22607 Hamburg, Germany
A. Ishikawa - Tohoku University
R. Itoh - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
M. Iwasaki - Osaka City University
Y. Iwasaki - High Energy Accelerator Org KEK, Tsukuba, Ibaraki 3050801, Japan
W. W. Jacobs - Indiana University Bloomington
S. Jia - Beihang University
Y. Jin - The University of Tokyo
D. Joffe - Kennesaw State University
K. K. Joo - Chonnam Natl Univ, Kwangju 660701, South Korea
J. Kahn - Ludwig Maximilians Univ Munchen, D-80539 Munich, Germany
A. B. Kaliyar - Indian Institute of Technology Madras
T. Kawasaki - Kitasato University
H. Kichimi - High Energy Accelerator Org KEK, Tsukuba, Ibaraki 3050801, Japan
C. Kiesling - Max
D. Y. Kim - Soongsil University
H. J. Kim - Kyungpook Natl Univ, Daegu 702701, South Korea
S. H. Kim - Hanyang University
P. Kodys - Charles University
S. Korpar - J Stefan Inst, Ljubljana 1000, Slovenia
D. Kotchetkov - University of Hawaii System
P. Krizan - J Stefan Inst, Ljubljana 1000, Slovenia
R. Kroeger - University of Mississippi
P. Krokovny - Siberian Branch of the Russian Academy of Sciences
T. Kuhr - Ludwig Maximilians Univ Munchen, D-80539 Munich, Germany
R. Kulasiri - Kennesaw State University
A. Kuzmin - Siberian Branch of the Russian Academy of Sciences
Y-J. Kwon - Yonsei University
J. S. Lange - University of Giessen
I. S. Lee - Hanyang University
J. K. Lee - University of Seoul
J. Y. Lee - University of Seoul
S. C. Lee - Kyungpook Natl Univ, Daegu 702701, South Korea
Y. B. Li - Peking University
L. Li Gioi - Max
J. Libby - Indian Institute of Technology Madras
D. Liventsev - High Energy Accelerator Org KEK, Tsukuba, Ibaraki 3050801, Japan
P-C. Lu - Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
M. Lubej - J Stefan Inst, Ljubljana 1000, Slovenia
T. Luo - Fudan University
J. MacNaughton - University of Miyazaki
M. Masuda - The University of Tokyo
M. Merola - Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy
K. Miyabayashi - Nara Womens Univ, Nara 6308506, Japan
H. Miyata - Niigata University
R. Mizuk - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
G. B. Mohanty - Tata Institute of Fundamental Research
T. Mori - Nagoya University
M. Mrvar - J Stefan Inst, Ljubljana 1000, Slovenia
R. Mussa - Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy
M. Nakao - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
K. J. Nath - Indian Institute of Technology Guwahati
Z. Natkaniec - H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
M. Nayak - High Energy Accelerator Org KEK, Tsukuba, Ibaraki 3050801, Japan
M. Niiyama - Kyoto University
N. K. Nisar - University of Pittsburgh
S. Nishida - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
S. Ogawa - Toho University
P. Pakhlov - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
G. Pakhlova - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
B. Pal - Brookhaven Natl Lab, Upton, NY 11973 USA
S. Pardi - Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy
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
V. Popov - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
E. Prencipe - Forschungszentrum Jülich
M. Prim - Karlsruher Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany
M. Ritter - Ludwig Maximilians Univ Munchen, D-80539 Munich, Germany
A. Rostomyan - DESY, D-22607 Hamburg, Germany
G. Russo - Ist Nazl Fis Nucl, Sez Napoli, I-80126 Naples, Italy
D. Sahoo - Tata Institute of Fundamental Research
Y. Sakai - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
M. Salehi - Ludwig Maximilians Univ Munchen, D-80539 Munich, Germany
S. Sandilya - University of Cincinnati
L. Santelj - High Energy Accelerator Org KEK, Tsukuba, Ibaraki 3050801, Japan
T. Sanuki - Tohoku University
V. Savinov - University of Pittsburgh
O. Schneider - Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland
G. Schnell - University of the Basque Country
J. Schueler - University of Hawaii System
C. Schwanda - Inst High Energy Phys, A-1050 Vienna, Austria
Y. Seino - Niigata University
K. Senyo - Yamagata University
O. Seon - Nagoya University
M. E. Sevior - University of Melbourne
C. P. Shen - Beihang University
T-A. Shibata - Tokyo Institute of Technology
J-G. Shiu - Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
B. Shwartz - Siberian Branch of the Russian Academy of Sciences
F. Simon - Max
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
J. F. Strube - Pacific Northwest Natl Lab, Richland, WA 99352 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
Y. Tao - Univ Florida, Gainesville, FL 32611 USA
F. Tenchini - DESY, D-22607 Hamburg, Germany
M. Uchida - Tokyo Institute of Technology
T. Uglov - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
Y. Unno - Hanyang University
S. Uno - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
P. Urquijo - University of Melbourne
R. Van Tonder - Karlsruher Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany
G. Varner - University of Hawaii System
K. E. Varvell - University of Sydney
B. Wang - University of Cincinnati
C. H. Wang - Natl United Univ, Miaoli 36003, Taiwan
M-Z. Wang - Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
P. Wang - Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
X. L. Wang - Fudan University
M. Watanabe - Niigata University
S. Watanuki - Tohoku University
E. Widmann - Meyer
E. Won - University of Seoul
H. Yamamoto - Tohoku University
S. B. Yang - University of Seoul
H. Ye - DESY, D-22607 Hamburg, Germany
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
Y. Yusa - Niigata University
S. Zakharov - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
Z. P. Zhang - Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
V. Zhilich - Siberian Branch of the Russian Academy of Sciences
V. Zhukova - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
V. Zhulanov - Siberian Branch of the Russian Academy of Sciences
Belle Collaboration
Publication Details: Physical review. D, Vol.98(11)
Publisher: Amer Physical Soc
Number of pages: 13
Grant note: IT956-16 / Ikerbasque, Basque Foundation for Science, Basque Government 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) 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) Ministry of Economy and Competitiveness (MINECO) (Juan de la Cierva), Spain; Spanish Government Deutsche Forschungsgemeinschaft; German Research Foundation (DFG) Radiation Science Research Institute P 26794-N20 / Austrian Science Fund; Austrian Science Fund (FWF) 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 Tau-Lepton Physics Research Center of Nagoya University VolkswagenStiftung; Volkswagen 2015H1A2A1033649; 2016R1D1A1B01010135; 2016K1A3A7A09005 603; 2016R1D1A1B0 2012900; 2018R1A2B3003 643; 2018R1A6A1A0 6024970; 2018R1D1 A1B07047294 / National Research Foundation (NRF) of Korea; National Research Foundation of Korea KREONET/GLORIAD Swiss National Science Foundation; Swiss National Science Foundation (SNSF) Foreign Large-size Research Facility Application Supporting project 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) National Science Center; National Science Centre, Poland
Identifiers: 9918747808331
Academic Unit: King Abdulaziz City for Science & Technology; University of Tabuk
Language: English
Resource Type: Journal article