Measurement of eta(c) (1S), eta(c)(2S), and nonresonant eta 'pi(+)pi(-) production via two-photon collisions

Q. N. Xu; 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; E. Barberio; P. Behera; M. Berger; V. Bhardwaj; B. Bhuyan; J. Biswal; A. Bondar; A. Bozek; M. Bracko; D. Cervenkov; A. Chen; B. G. Cheon; K. Chilikin; K. Cho; S. -K. Choi; Y. Choi; D. Cinabro; S. Cunliffe; T. Czank; N. Dash; S. Di Carlo; Z. Dolezal; Z. Drasal; S. Eidelman; D. Epifanov; J. E. Fast; T. Ferber; B. G. Fulsom; R. Garg; V. Gaur; N. Gabyshev; A. Garmash; M. Gelb; P. Goldenzweig; Y. Guan; E. Guido; J. Haba; K. Hayasaka; H. Hayashii; M. T. Hedges; W. -S. Hou; K. Inami; G. Inguglia; A. Ishikawa; R. Itoh; M. Iwasaki; Y. Iwasaki; I. Jaegle; H. B. Jeon; Y. Jin; K. K. Joo; T. Julius; A. B. Kaliyar; K. H. Kang; G. Karyan; T. Kawasaki; H. Kichimi; C. Kiesling; D. Y. Kim; H. J. Kim; J. B. Kim; P. Kodys; S. Korpar; D. Kotchetkov; P. Krizan; R. Kroeger; P. Krokovny; R. Kulasiri; Y. -J. Kwon; I. S. Lee; S. C. Lee; L. K. Li; Y. 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; H. K. Moon; T. Mori; R. Mussa; T. Nanut; K. J. Nath; Z. Natkaniec; M. Nayak; N. K. Nisar; S. Nishida; S. Okuno; H. Ono; Y. Onuki; P. Pakhlov; G. Pakhlova; B. Pal; H. Park; S. Paul; T. K. Pedlar; R. Pestotnik; L. E. Piilonen; V. Popov; M. Ritter; A. Rostomyan; G. Russo; Y. Sakai; M. Salehi; S. Sandilya; T. Sanuki; V. Savinov; O. Schneider; G. Schnell; C. Schwanda; Y. Seino; K. Senyo; O. Seon; M. E. Sevior; V. Shebalin; C. P. Shen; T. -A. Shibata; N. Shimizu; J. -G. Shiu; A. Sokolov; E. Solovieva; M. Staric; J. F. Strube; T. Sumiyoshi; M. Takizawa; U. Tamponi; K. Tanida; F. Tenchini; M. Uchida; S. Uehara; T. Uglov; Y. Unno; S. Uno; P. Urquijo; C. Van Hulse; G. Varner; A. Vinokurova; V. Vorobyev; A. Vossen; B. Wang; C. H. Wang; M. -Z. Wang; P. Wang; X. L. Wang; M. Watanabe; Y. Watanabe; E. Widmann; E. Won; H. Ye; C. Z. Yuan; Y. Yusa; S. Zakharov; C. C. Zhang; Z. P. Zhang; V. Zhilich; V. Zhukova; V. Zhulanov; A. Zupanc; Belle Collaboration

doi:10.1103/PhysRevD.98.072001

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Measurement of eta(c) (1S), eta(c)(2S), and nonresonant eta 'pi(+)pi(-) production via two-photon collisions

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Measurement of eta(c) (1S), eta(c)(2S), and nonresonant eta 'pi(+)pi(-) production via two-photon collisions

Q. N. Xu, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, …

Physical review. D, Vol.98(7)

03/10/2018

DOI: https://doi.org/10.1103/PhysRevD.98.072001

Abstract

Astronomy & Astrophysics

Physical Sciences

Physics

Physics, Particles & Fields

Science & Technology

We report the measurement of gamma gamma -> eta(c) (1S) -> eta(c) (2S) -> eta'pi(+)pi(-) with eta' decays to gamma rho and eta pi(+)pi(-) using 941 fb(-1) of data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The eta(c) (1S) mass and width are measured to be M = [2984.6 +/- 0.7 (sta) +/- 2.2 (syst) +/- 0.3 (model)] MeV/c(2) and Gamma = [30.8(-2.2)(+2.3) (stat) +/- 2.5 (syst) +/- 1.4 (model)] MeV, respectively. First observation of eta(c) (2S) -> eta'pi(+)pi(-) with a significance of 5.5 sigma including systematic error is obtained, and the eta(c) (2S)mass is measured to be M = [3635.1 +/- 3.7 (stat) +/- 2.9 (syst) +/- 0.4 (model)] MeV/c(2). The products of the two-photon decay width and branching fraction (B) of decays to eta'pi(+)pi(-) are determined to be Gamma(gamma gamma)Gamma B-gamma gamma = [65.4 +/- 2.6 (stat) +/- 7.8 (syst)] eV for eta(c)(1S) and [5.6(-1.1)(+1.2) (stat) +/- 1.1 (syst)] eV for eta(c) (2S). The cross sections for gamma gamma -> eta'pi(+)pi(-) and eta'f(2)(1270) are measured for the first time.

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Title: Measurement of eta(c) (1S), eta(c)(2S), and nonresonant eta 'pi(+)pi(-) production via two-photon collisions
Creators - without role: Q. N. Xu - Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
I. Adachi - Grad Univ Adv Studies, SOKENDAI, Hayama 2400193, Japan
H. Aihara - The University of Tokyo
S. Al Said - King Abdulaziz University
D. M. Asner - Pacific Northwest Natl Lab, Richland, WA 99352 USA
H. Atmacan - University of South Carolina
V. Aulchenko - Siberian Branch of the Russian Academy of Sciences
T. Aushev - Moscow Inst Phys & Technol, Moscow 141700, 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
E. Barberio - University of Melbourne
P. Behera - Indian Institute of Technology Madras
M. Berger - Meyer
V. Bhardwaj - Indian Inst Sci Educ & Res Mohali, Sas Nagar 140306, India
B. Bhuyan - Indian Institute of Technology Guwahati
J. Biswal - J Stefan Inst, Ljubljana 1000, Slovenia
A. Bondar - Siberian Branch of the Russian Academy of Sciences
A. Bozek - H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
M. Bracko - J Stefan Inst, Ljubljana 1000, Slovenia
D. Cervenkov - Charles University
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
D. Cinabro - Wayne State University
S. Cunliffe - DESY, D-22607 Hamburg, Germany
T. Czank - Tohoku University
N. Dash - Indian Institute of Technology Bhubaneswar
S. Di Carlo - Wayne State University
Z. Dolezal - Charles University
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
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
M. Gelb - Karlsruher Inst Technol, Inst Expt Kernphys, D-76131 Karlsruhe, Germany
P. Goldenzweig - Karlsruher Inst Technol, Inst Expt Kernphys, D-76131 Karlsruhe, Germany
Y. Guan - High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan
E. Guido - Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy
J. Haba - Grad Univ Adv Studies, SOKENDAI, 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. Inami - Nagoya University
G. Inguglia - DESY, D-22607 Hamburg, Germany
A. Ishikawa - Tohoku University
R. Itoh - Grad Univ Adv Studies, SOKENDAI, Hayama 2400193, Japan
M. Iwasaki - Osaka City University
Y. Iwasaki - High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan
I. Jaegle - Univ Florida, Gainesville, FL 32611 USA
H. B. Jeon - Kyungpook Natl Univ, Taegu 702701, South Korea
Y. Jin - The University of Tokyo
K. K. Joo - Chonnam Natl Univ, Kwangju 660701, South Korea
T. Julius - University of Melbourne
A. B. Kaliyar - Indian Institute of Technology Madras
K. H. Kang - Kyungpook Natl Univ, Taegu 702701, South Korea
G. Karyan - DESY, D-22607 Hamburg, Germany
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, Taegu 702701, South Korea
J. B. Kim - University of Seoul
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
Y. -J. Kwon - Yonsei University
I. S. Lee - Hanyang University
S. C. Lee - Kyungpook Natl Univ, Taegu 702701, South Korea
L. K. Li - Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
Y. Li - Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA
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 - University of Pittsburgh
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
H. K. Moon - University of Seoul
T. Mori - Nagoya University
R. Mussa - Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy
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
N. K. Nisar - University of Pittsburgh
S. Nishida - Grad Univ Adv Studies, SOKENDAI, Hayama 2400193, Japan
S. Okuno - Kanagawa 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 - University of Cincinnati
H. Park - Kyungpook Natl Univ, Taegu 702701, South Korea
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 - Moscow Inst Phys & Technol, Moscow 141700, Russia
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 - Grad Univ Adv Studies, SOKENDAI, Hayama 2400193, Japan
M. Salehi - Ludwig Maximilians Univ Munchen, D-80539 Munich, Germany
S. Sandilya - University of Cincinnati
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
O. Seon - Nagoya 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
N. Shimizu - The University of Tokyo
J. -G. Shiu - Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
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
T. Sumiyoshi - Tokyo Metropolitan University
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
S. Uehara - Grad Univ Adv Studies, SOKENDAI, Hayama 2400193, Japan
T. Uglov - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
Y. Unno - Hanyang University
S. Uno - Grad Univ Adv Studies, SOKENDAI, Hayama 2400193, Japan
P. Urquijo - University of Melbourne
C. Van Hulse - University of the Basque Country
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 - Indiana University Bloomington
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 - High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan
M. Watanabe - Niigata University
Y. Watanabe - Kanagawa University
E. Widmann - Meyer
E. Won - University of Seoul
H. Ye - DESY, D-22607 Hamburg, Germany
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
C. C. Zhang - 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 - 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. D, Vol.98(7)
Publisher: Amer Physical Soc
Number of pages: 17
Grant note: Radiation Science Research Institute, Foreign Large-size Research Facility Application Supporting project 14.W03.31.0026 / Ministry of Higher Education and Science of the Russian Federation; Ministry of Education and Science, Russian Federation 11435013; 11475187; 11521505; 11575017; 11675166; 11705209 / National Natural Science Foundation of China; National Natural Science Foundation of China (NSFC) Ministry of Education of Taiwan; Ministry of Education, Taiwan Ministry of Science and Technology of Taiwan; Ministry of Science and Technology, Taiwan 2014R1A2A2A01005286; 2015R1A2A2A01003280; 2015H1A2A1033649; 2016R1D1A1B01010135; 2016K1A3A7A09005 603; 2016R1D1A1B02012900 / National Research Foundation (NRF) of Korea; National Research Foundation of Korea Department of Science and Technology of India; Department of Science & Technology (India) CAS Center for Excellence in Particle Physics (CCEPP) 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 Australian Research Council Deutsche Forschungsgemeinschaft; German Research Foundation (DFG) 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 Tau-Lepton Physics Research Center of Nagoya University VolkswagenStiftung; Volkswagen Swiss National Science Foundation; Swiss National Science Foundation (SNSF) 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 IT95616 / Ikerbasque, Basque Foundation for Science, Basque Government United States Department of Energy; United States Department of Energy (DOE) Excellence Cluster Universe Slovenian Research Agency; Slovenian Research Agency - Slovenia JIH5913023; IDH5913011/003; JIH5913024; IDH5913011/002 / Fudan University National Science Foundation; National Science Foundation (NSF) Carl Zeiss Foundation QYZDJ-SSW-SLH011 / Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS) National Science Center; National Science Centre, Poland
Identifiers: 9918651308331
Academic Unit: King Abdulaziz City for Science & Technology; University of Tabuk; King Abdullah University of Science & Technology
Language: English
Resource Type: Journal article