Observation of gamma(2S) -> gamma eta(b)(1S) Decay

B. G. Fulsom; T. K. Pedlar; I. Adachi; H. Aihara; S. Al Said; D. M. Asner; H. Atmacan; V. Aulchenko; T. Aushev; R. Ayad; V. Babu; I. Badhrees; A. M. Bakich; V. Bansal; P. Behera; C. Beleno; M. Berger; V. Bhardwaj; B. Bhuyan; T. Bilka; J. Biswal; A. Bondar; G. Bonvicini; A. Bozek; M. Bracko; T. E. Browder; 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; J. Dingfelder; Z. Dolezal; T. V. Dong; Z. Drasal; S. Eidelman; D. Epifanov; J. E. Fast; T. Ferber; R. Garg; V. Gaur; N. Gabyshev; A. Garmash; M. Gelb; A. Giri; P. Goldenzweig; E. Guido; J. Haba; K. Hayasaka; H. Hayashii; S. Hirose; W-S. Hou; T. Iijima; K. Inami; G. Inguglia; A. Ishikawa; R. Itoh; M. Iwasaki; Y. Iwasaki; W. W. Jacobs; H. B. Jeon; S. Jia; Y. Jin; D. Joffe; K. K. Joo; T. Julius; T. Kawasaki; H. Kichimi; C. Kiesling; D. Y. Kim; H. J. Kim; J. B. Kim; K. T. Kim; S. H. Kim; K. Kinoshita; 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; S. C. Lee; L. K. Li; Y. B. Li; L. Li Gioi; J. Libby; D. Liventsev; M. Lubej; T. Luo; M. Masuda; T. Matsuda; D. Matvienko; M. Merola; K. Miyabayashi; H. Miyata; R. Mizuk; G. B. Mohanty; H. K. Moon; T. Mori; R. Mussa; M. Nakao; T. Nanut; K. J. Nath; Z. Natkaniec; M. Nayak; M. Niiyama; N. K. Nisar; S. Nishida; S. Ogawa; S. Okuno; H. Ono; P. Pakhlov; G. Pakhlova; B. Pal; S. Pardi; H. Park; S. Paul; R. Pestotnik; L. E. Piilonen; V. Popov; E. Prencipe; A. Rabusov; M. Ritter; A. Rostomyan; G. Russo; Y. Sakai; M. Salehi; S. Sandilya; L. Santelj; T. Sanuki; V. Savinov; O. Schneider; G. Schnell; C. Schwanda; Y. Seino; K. Senyo; M. E. Sevior; V. Shebalin; C. P. Shen; T-A. Shibata; J-G. Shiu; B. Shwartz; F. Simon; J. B. Singh; A. Sokolov; E. Solovieva; M. Staric; J. F. Strube; M. Sumihama; K. Sumisawa; T. Sumiyoshi; W. Sutcliffe; M. Takizawa; U. Tamponi; K. Tanida; F. Tenchini; M. Uchida; T. Uglov; Y. Unno; S. Uno; P. Urquijo; S. E. Vahsen; C. Van Hulse; R. Van Tonder; G. Varner; A. Vinokurova; V. Vorobyev; A. Vossen; B. Wang; C. H. Wang; P. Wang; X. L. Wang; M. Watanabe; S. Watanuki; E. Widmann; E. Won; H. Ye; J. H. Yin; C. Z. Yuan; Z. P. Zhang; V. Zhilich; V. Zhukova; V. Zhulanov; A. Zupanc; Belle Collaboration

doi:10.1103/PhysRevLett.121.232001

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Observation of gamma(2S) -> gamma eta(b)(1S) Decay

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Observation of gamma(2S) -> gamma eta(b)(1S) Decay

B. G. Fulsom, T. K. Pedlar, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, …

Physical review letters, Vol.121(23)

03/12/2018

DOI: https://doi.org/10.1103/PhysRevLett.121.232001

PMID: 30576207

Abstract

Physical Sciences

Physics

Physics, Multidisciplinary

Science & Technology

We report the observation of gamma(2S) -> gamma eta(b)(1S) based on an analysis of the inclusive photon spectrum of 24.7 fb(-1) of e(+)e(-) collisions at the gamma(2s) center-of-mass energy collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We measure a branching fraction of B [gamma(2S) -> gamma eta(b)(1S)] = (6.1(-0.7-0.6)(+0.6+0.9) x 10(-4) and derive an eta(b) (1S) mass of 9394.8(-3.1-2.7)(+2.7+4.5) MeV/c(2), where the uncertainties are statistical and systematic, respectively. The significance of our measurement is greater than 7 standard deviations, constituting the first observation of this decay mode.

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Title: Observation of gamma(2S) -> gamma eta(b)(1S) Decay
Creators - without role: B. G. Fulsom - Pacific Northwest Natl Lab, Richland, WA 99352 USA
T. K. Pedlar - Luther Coll, Decorah, IA 52101 USA
I. Adachi - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Germany
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
V. 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
V. Babu - Tata Institute of Fundamental Research
I. Badhrees - King Abdulaziz City Sci & Technol, Riyadh 11442, Saudi Arabia
A. M. Bakich - University of Sydney
V. Bansal - Pacific Northwest Natl Lab, Richland, WA 99352 USA
P. Behera - Indian Institute of Technology Madras
C. Beleno - University of Göttingen
M. Berger - Meyer
V. Bhardwaj - Indian Inst Sci Educ & Res Mohali, Sas Nagar 140306, India
B. Bhuyan - Indian Institute of Technology Guwahati
T. Bilka - Charles University
J. Biswal - J Stefan Inst, Ljubljana 1000, Slovenia
A. Bondar - 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
T. E. Browder - University of Hawaii System
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
J. Dingfelder - University of Bonn
Z. Dolezal - Charles University
T. V. Dong - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Germany
Z. Drasal - Charles University
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
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
M. Gelb - Karlsruher Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany
A. Giri - Indian Institute of Technology Hyderabad
P. Goldenzweig - Karlsruher Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany
E. Guido - Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy
J. Haba - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Germany
K. Hayasaka - Niigata University
H. Hayashii - Nara Womens Univ, Nara 6308506, Japan
S. Hirose - Nagoya University
W-S. Hou - Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
T. Iijima - Nagoya University
K. Inami - Nagoya University
G. Inguglia - DESY, D-22607 Hamburg, Germany
A. Ishikawa - Tohoku University
R. Itoh - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Germany
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
Y. Jin - The University of Tokyo
D. Joffe - Kennesaw State University
K. K. Joo - Chonnam Natl Univ, Kwangju 660701, South Korea
T. Julius - University of Melbourne
T. Kawasaki - Niigata 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
J. B. Kim - University of Seoul
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
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
S. C. Lee - Kyungpook Natl Univ, Daegu 702701, South Korea
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
D. Liventsev - High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan
M. Lubej - J Stefan Inst, Ljubljana 1000, Slovenia
T. Luo - Fudan University
M. Masuda - The University of Tokyo
T. Matsuda - University of Miyazaki
D. Matvienko - Siberian Branch of the Russian Academy of Sciences
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
H. K. Moon - University of Seoul
T. Mori - Nagoya University
R. Mussa - Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy
M. Nakao - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Germany
T. Nanut - J Stefan Inst, Ljubljana 1000, Slovenia
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, Germany
S. Ogawa - Toho University
S. Okuno - Kanagawa University
H. Ono - Nippon Dent Univ, Niigata 9518580, Japan
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
H. Park - Kyungpook Natl Univ, Daegu 702701, South Korea
S. Paul - Tech Univ Munich, Dept Phys, D-85748 Garching, Germany
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
A. Rabusov - Tech Univ Munich, Dept Phys, D-85748 Garching, 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
Y. Sakai - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Germany
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
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
V. Shebalin - Siberian Branch of the Russian Academy of Sciences
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
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
M. Staric - J Stefan Inst, Ljubljana 1000, Slovenia
J. F. Strube - Pacific Northwest Natl Lab, Richland, WA 99352 USA
M. Sumihama - Gifu University
K. Sumisawa - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Germany
T. Sumiyoshi - Tokyo Metropolitan University
W. Sutcliffe - Karlsruher Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany
M. Takizawa - Japan Proton Accelerator Research Complex
U. Tamponi - Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy
K. Tanida - Japan Atom Energy Agcy, Adv Sci Res Ctr, Naka, Ibaraki 3191195, Japan
F. Tenchini - University of Melbourne
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, Germany
P. Urquijo - University of Melbourne
S. E. Vahsen - University of Hawaii System
C. Van Hulse - University of the Basque Country
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 - University of Cincinnati
C. H. Wang - Natl United Univ, Miaoli 36003, 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. 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
Z. P. Zhang - Univ Sci & Technol China, Hefei 230026, 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
A. Zupanc - J Stefan Inst, Ljubljana 1000, Slovenia
Belle Collaboration
Publication Details: Physical review letters, Vol.121(23)
Publisher: Amer Physical Soc
Number of pages: 8
Grant note: 11435013; 11475187; 11521505; 11575017; 11675166; 11705209 / National Natural Science Foundation of China; National Natural Science Foundation of China (NSFC) 2015H1A2A1033649; 2016R1D1A1B01010135; 2016K1A3A7A09005 603; 2016R1D1A1B0201 2900; 2018R1A2B3003 643; 2018R1A6A1A0602 4970; 2018R1D1 A1B07047294 / National Research Foundation (NRF) of Korea; National Research Foundation of Korea Ministry of Science and Technology of Taiwan; Ministry of Science and Technology, Taiwan U.S. Department of Energy; United States Department of Energy (DOE) 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) Ikerbasque, Basque Foundation for Science, Spain 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 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 Foreign Large-size Research Facility Application Supporting project LTT17020 / Ministry of Education, Youth and Sports of the Czech Republic; Ministry of Education, Youth & Sports - Czech Republic 14.W03.31.0026 / Grant of the Russian Federation Government Excellence Cluster Universe 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: 9918909208331
Academic Unit: King Abdulaziz City for Science & Technology; University of Tabuk; King Abdullah University of Science & Technology
Language: English
Resource Type: Journal article