Observation of tau(-) -> pi(-)nu(tau)e(+)e(-) and search for tau(-) -> pi(-)nu(tau)mu(+)mu(-)

Y. Jin; H. Aihara; D. Epifanov; Adachi; S. Al Said; D. M. Asner; Aulchenko; T. Aushev; R. Ayad; Babu; Badhrees; S. Bahinipati; Bansal; P. Behera; M. Berger; Bhardwaj; T. Bilka; J. Biswal; A. Bobrov; G. Bonvicini; A. Bozek; M. Bracko; M. Campajola; L. Cao; D. Cervenkov; Chekelian; A. Chen; B. G. Cheon; K. Chilikin; H. E. Cho; K. Cho; Y. Choi; S. Choudhury; D. Cinabro; S. Cunliffe; S. Di Carlo; Z. Dolezal; T. Dong; D. Dossett; S. Eidelman; J. E. Fast; T. Ferber; B. G. Fulsom; R. Garg; Gaur; N. Gabyshev; A. Garmash; A. Giri; P. Goldenzweig; B. Golob; D. Greenwald; O. Grzymkowska; J. Haba; K. Hayasaka; H. Hayashii; M. T. Hedges; W-S Hou; K. Huang; T. Iijima; K. Inami; G. Inguglia; A. Ishikawa; M. Iwasaki; Y. Iwasaki; W. W. Jacobs; H. B. Jeon; S. Jia; D. Joffe; K. K. Joo; J. Kahn; A. B. Kaliyar; G. Karyan; T. Kawasaki; H. Kichimi; C. Kiesling; D. Y. Kim; H. J. Kim; K. T. Kim; S. H. Kim; K. Kinoshita; P. Kodys; S. Korpar; D. Kotchetkov; P. Krizan; R. Kroeger; P. Krokovny; R. Kulasiri; R. Kumar; A. Kuzmin; Y-J Kwon; K. Lalwani; J. S. Lange; J. Y. Lee; S. C. Lee; C. H. Li; L. K. Li; Y. B. Li; L. Li Gioi; J. Libby; K. Lieret; Z. Liptak; D. Liventsev; P-C Lu; T. Luo; J. MacNaughton; M. Masuda; T. Matsuda; D. Matvienko; M. Merola; K. Miyabayashi; H. Miyata; R. Mizuk; T. Mori; R. Mussa; E. Nakano; M. Nakao; K. J. Nath; Z. Natkaniec; M. Nayak; M. Niiyama; N. K. Nisar; S. Nishida; S. Ogawa; H. Ono; Y. Onuki; P. Pakhlov; G. Pakhlova; B. Pal; S. Pardi; H. Park; S-H Park; S. Patra; S. Paul; T. K. Pedlar; R. Pestotnik; L. E. Piilonen; Popov; E. Prencipe; M. Purohit; A. Rostomyan; G. Russo; D. Sahoo; Y. Sakai; M. Salehi; S. Sandilya; L. Santelj; T. Sanuki; Savinov; O. Schneider; G. Schnell; J. Schueler; C. Schwanda; Y. Seino; K. Senyo; O. Seon; M. E. Sevior; Shebalin; C. P. Shen; J-G Shiu; B. Shwartz; F. Simon; J. B. Singh; A. Sokolov; E. Solovieva; S. Stanic; M. Staric; Z. S. Stottler; J. F. Strube; T. Sumiyoshi; M. Takizawa; U. Tamponi; K. Tanida; F. Tenchini; K. Trabelsi; M. Uchida; T. Uglov; Y. Unno; S. Uno; P. Urquijo; Y. Usov; R. Van Tonder; G. Varner; A. Vinokurova; V. Vorobyev; A. Vossen; B. Wang; C. H. Wang; M-Z Wang; P. Wang; S. Watanuki; E. Won; S. B. Yang; H. Ye; J. H. Yin; C. Z. Yuan; Y. Yusa; Z. P. Zhang; Zhilich; Zhukova; Belle Collaboration; I. Badhrees

doi:10.1103/PhysRevD.100.071101

Back

Observation of tau(-) -> pi(-)nu(tau)e(+)e(-) and search for tau(-) -> pi(-)nu(tau)mu(+)mu(-)

Journal article

Open access

Peer reviewed

Observation of tau(-) -> pi(-)nu(tau)e(+)e(-) and search for tau(-) -> pi(-)nu(tau)mu(+)mu(-)

Y. Jin, H. Aihara, D. Epifanov, Adachi, S. Al Said, D. M. Asner, Aulchenko, T. Aushev, R. Ayad, Babu, …

Physical review. D, Vol.100(7)

15/10/2019

DOI: https://doi.org/10.1103/PhysRevD.100.071101

Abstract

Astronomy & Astrophysics

Physical Sciences

Physics

Physics, Particles & Fields

Science & Technology

We present the first measurements of branching fractions of rare tau-lepton decays, tau(-) -> pi(-)nu(tau)l(+)l(-) (l = e or mu), using a data sample corresponding to 562 fb(-1) collected at a center-of-mass energy of 10.58 GeV with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The tau(-) -> pi(-)nu(tau)e(+)e(-) decay is observed for the first time with 7.0 sigma significance. The partial branching fraction determined by the structure-dependent mechanisms mediated by either a vector or an axial-vector current for the mass region M-pi ee > 1.05 GeV/c(2) is measured to be B(tau(-) -> pi(-)nu(tau)e(+)e(-))[M pi-e+e- > 1.05 GeV/c(2)] = (5.90 +/- 0.53 +/- 0.85 +/- 0.11) x 10(-6), where the first uncertainty is statistical, the second is systematic, and the third is due to model dependence. In the full phase space, due to the different detection efficiencies for the structure-dependent mechanisms mediated by axial-vector and vector currents, the branching fraction varies from B-A(tau(-) -> pi(-)nu(tau)e(+)e(-)) = (1.46 +/- 0.13 +/- 0.21) x 10(-5) to B-V(tau(-) -> pi(-)nu(tau)e(+)e(-)) = (3.01 +/- 0.27 +/- 0.43) x 10(-5), respectively. An upper limit is set on the branching fraction of the tau(-) -> pi(-)nu(tau)mu(+)mu(-) decay, B(tau(-) -> pi(-)nu(tau)mu(+)mu(-)) < 1.14 x 10(-5), at the 90% confidence level.

Files and links (1)

url

https://doi.org/10.1103/PhysRevD.100.071101View

Published (Version of record) Open

Metrics

1 Record Views

See more details

Details

Title: Observation of tau(-) -> pi(-)nu(tau)e(+)e(-) and search for tau(-) -> pi(-)nu(tau)mu(+)mu(-)
Creators - without role: Y. Jin - The University of Tokyo
H. Aihara - The University of Tokyo
D. Epifanov - Siberian Branch of the Russian Academy of Sciences
Adachi - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
S. Al Said - King Abdulaziz University
D. M. Asner - Brookhaven Natl Lab, Upton, NY 11973 USA
Aulchenko - Siberian Branch of the Russian Academy of Sciences
T. Aushev - Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Region, Russia
R. Ayad - University of Tabuk
Babu - DESY, D-22607 Hamburg, Germany
Badhrees - King Abdulaziz City Sci & Technol, Riyadh 11442, Saudi Arabia
S. Bahinipati - Indian Institute of Technology Bhubaneswar
Bansal - Pacific Northwest Natl Lab, Richland, WA 99352 USA
P. Behera - Indian Institute of Technology Madras
M. Berger - Meyer
Bhardwaj - Indian Inst Sci Educ & Res Mohali, Sas Nagar 140306, India
T. Bilka - Charles University
J. Biswal - J Stefan Inst, Ljubljana 1000, Slovenia
A. Bobrov - Siberian Branch of the Russian Academy of Sciences
G. Bonvicini - Wayne State University
A. Bozek - H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
M. Bracko - J Stefan Inst, Ljubljana 1000, Slovenia
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
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
H. E. Cho - Hanyang University
K. Cho - Korea Inst Sci & Technol Informat, Daejeon 305806, 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
S. Di Carlo - University of Paris-Saclay
Z. Dolezal - Charles University
T. Dong - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
D. Dossett - University of Melbourne
S. Eidelman - 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
B. G. Fulsom - Pacific Northwest Natl Lab, Richland, WA 99352 USA
R. Garg - Panjab University
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
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
D. Greenwald - Tech Univ Munich, Dept Phys, D-85748 Garching, Germany
O. Grzymkowska - H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
J. Haba - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
K. Hayasaka - Niigata University
H. Hayashii - Nara Womens Univ, Nara 6308506, Japan
M. T. Hedges - University of Hawaii System
W-S Hou - Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
K. Huang - Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
T. Iijima - Nagoya University
K. Inami - Nagoya University
G. Inguglia - Inst High Energy Phys, A-1050 Vienna, Austria
A. Ishikawa - High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan
M. Iwasaki - Osaka City University
Y. Iwasaki - High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan
W. W. Jacobs - Indiana University Bloomington
H. B. Jeon - Kyungpook Natl Univ, Daegu 702701, South Korea
S. Jia - Beihang University
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
G. Karyan - DESY, D-22607 Hamburg, Germany
T. Kawasaki - Kitasato University
H. Kichimi - High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan
C. Kiesling - Max
D. Y. Kim - Soongsil University
H. J. Kim - Kyungpook Natl Univ, Daegu 702701, South Korea
K. T. Kim - University of Seoul
S. H. Kim - Hanyang University
K. Kinoshita - University of Cincinnati
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
R. Kulasiri - Kennesaw State University
R. Kumar - Punjab Agr Univ, Ludhiana 141004, Punjab, India
A. Kuzmin - Siberian Branch of the Russian Academy of Sciences
Y-J Kwon - Yonsei University
K. Lalwani - Malaviya Natl Inst Technol Jaipur, Jaipur 302017, Rajasthan, India
J. S. Lange - University of Giessen
J. Y. Lee - University of Seoul
S. C. Lee - Kyungpook Natl Univ, Daegu 702701, South Korea
C. H. Li - Liaoning Normal University
L. K. Li - Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
Y. B. Li - Peking University
L. Li Gioi - Max
J. Libby - Indian Institute of Technology Madras
K. Lieret - Ludwig Maximilians Univ Munchen, D-80539 Munich, Germany
Z. Liptak - University of Hawaii System
D. Liventsev - High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan
P-C Lu - Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
T. Luo - Fudan University
J. MacNaughton - University of Miyazaki
M. Masuda - The University of Tokyo
T. Matsuda - University of Miyazaki
D. Matvienko - Siberian Branch of the Russian Academy of Sciences
M. Merola - INFN, 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
T. Mori - Nagoya University
R. Mussa - INFN, Sez Torino, I-10125 Turin, Italy
E. Nakano - Osaka City University
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 Res 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
H. Ono - Nippon Dent Univ, Niigata 9518580, Japan
Y. Onuki - The University of Tokyo
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 - INFN, Sez Napoli, I-80126 Naples, Italy
H. Park - Kyungpook Natl Univ, Daegu 702701, 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
Popov - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
E. Prencipe - Forschungszentrum Jülich
M. Purohit - University of South Carolina
A. Rostomyan - DESY, D-22607 Hamburg, Germany
G. Russo - INFN, 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 Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan
T. Sanuki - Tohoku University
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
Shebalin - University of Hawaii System
C. P. Shen - Beihang University
J-G Shiu - Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
B. Shwartz - Siberian Branch of the Russian Academy of Sciences
F. Simon - Max
J. B. Singh - Panjab University
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
J. F. Strube - Pacific Northwest Natl Lab, Richland, WA 99352 USA
T. Sumiyoshi - Tokyo Metropolitan University
M. Takizawa - Japan Proton Accelerator Research Complex
U. Tamponi - INFN, Sez Torino, I-10125 Turin, Italy
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 - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
P. Urquijo - University of Melbourne
Y. Usov - Siberian Branch of the Russian Academy of Sciences
R. Van Tonder - Karlsruher Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany
G. Varner - University of Hawaii System
A. Vinokurova - Siberian Branch of the Russian Academy of Sciences
V. Vorobyev - Siberian Branch of the Russian Academy of Sciences
A. Vossen - Duke University
B. Wang - Max
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
S. Watanuki - Tohoku University
E. Won - University of Seoul
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
Z. P. Zhang - Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
Zhilich - Siberian Branch of the Russian Academy of Sciences
Zhukova - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
Belle Collaboration
I. Badhrees - King Abdulaziz City for Science & Technology
Publication Details: Physical review. D, Vol.100(7)
Publisher: Amer Physical Soc
Number of pages: 9
Grant note: Radiation Science Research Institute, Foreign Large-size Research Facility Application Supporting project 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 Deutsche Forschungsgemeinschaft; German Research Foundation (DFG) Global Science Experimental Data Hub Center of theKorea Institute of Science and Technology Information 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 Tau-Lepton Physics Research Center of Nagoya University VolkswagenStiftung; Volkswagen KREONET/GLORIAD Swiss National Science Foundation; Swiss National Science Foundation (SNSF) 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 2015H1A2A1033649; 2016R1D1A1B01010135; 2016K1A3A7A09005 603; 2016R1D1A1B02012900; 2018R1A2B3003 643; 2018R1A6A1A06024970; 2018R1D1 A1B07047294 / National Research Foundation (NRF) of Korea; National Research Foundation of Korea 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: 9918980608331
Academic Unit: King Abdulaziz City for Science & Technology
Language: English
Resource Type: Journal article