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Observation of a new structure near 10.75 GeV in the energy dependence of the e + e − → ϒ (nS)π + π − (n = 1, 2, 3) cross sections

Journal of High Energy Physics. 2019;2019(10):1-30 DOI 10.1007/JHEP10(2019)220

 

Journal Homepage

Journal Title: Journal of High Energy Physics

ISSN: 1029-8479 (Online)

Publisher: SpringerOpen

Society/Institution: International School for Advanced Studies (SISSA)

LCC Subject Category: Science: Physics: Nuclear and particle physics. Atomic energy. Radioactivity

Country of publisher: Germany

Language of fulltext: English

Full-text formats available: PDF

 

AUTHORS


The BELLE collaboration

R. Mizuk (P.N. Lebedev Physical Institute of the Russian Academy of Sciences)

A. Bondar (Budker Institute of Nuclear Physics SB RAS)

I. Adachi (SOKENDAI (The Graduate University for Advanced Studies))

H. Aihara (Department of Physics, University of Tokyo)

D. M. Asner (Brookhaven National Laboratory)

V. Aulchenko (Budker Institute of Nuclear Physics SB RAS)

T. Aushev (Moscow Institute of Physics and Technology)

R. Ayad (Department of Physics, Faculty of Science, University of Tabuk)

I. Badhrees (King Abdulaziz City for Science and Technology)

S. Bahinipati (Indian Institute of Technology Bhubaneswar)

A. M. Bakich (School of Physics, University of Sydney)

P. Behera (Indian Institute of Technology Madras)

C. Beleño (II. Physikalisches Institut, Georg-August-Universität Göttingen)

M. Berger (Stefan Meyer Institute for Subatomic Physics)

V. Bhardwaj (Indian Institute of Science Education and Research Mohali)

T. Bilka (Faculty of Mathematics and Physics, Charles University)

J. Biswal (J. Stefan Institute)

A. Bozek (H. Niewodniczanski Institute of Nuclear Physics)

M. Bračko (J. Stefan Institute)

T. E. Browder (University of Hawaii)

M. Campajola (INFN - Sezione di Napoli)

L. Cao (Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie)

D. Červenkov (Faculty of Mathematics and Physics, Charles University)

A. Chen (National Central University)

B. G. Cheon (Hanyang University)

K. Chilikin (P.N. Lebedev Physical Institute of the Russian Academy of Sciences)

H. E. Cho (Hanyang University)

K. Cho (Korea Institute of Science and Technology Information)

S.-K. Choi (Gyeongsang National University)

Y. Choi (Sungkyunkwan University)

D. Cinabro (Wayne State University)

S. Cunliffe (Deutsches Elektronen–Synchrotron)

N. Dash (Indian Institute of Technology Bhubaneswar)

G. De Nardo (INFN - Sezione di Napoli)

F. Di Capua (INFN - Sezione di Napoli)

S. Di Carlo (LAL, Univ. Paris-Sud, CNRS/IN2P3, Université Paris-Saclay)

Z. Doležal (Faculty of Mathematics and Physics, Charles University)

T.V. Dong (SOKENDAI (The Graduate University for Advanced Studies))

S. Eidelman (Budker Institute of Nuclear Physics SB RAS)

D. Epifanov (Budker Institute of Nuclear Physics SB RAS)

J. E. Fast (Pacific Northwest National Laboratory)

T. Ferber (Deutsches Elektronen–Synchrotron)

B. G. Fulsom (Pacific Northwest National Laboratory)

V. Gaur (Virginia Polytechnic Institute and State University)

A. Garmash (Budker Institute of Nuclear Physics SB RAS)

A. Giri (Indian Institute of Technology Hyderabad)

P. Goldenzweig (Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie)

B. Golob (J. Stefan Institute)

O. Grzymkowska (H. Niewodniczanski Institute of Nuclear Physics)

T. Hara (SOKENDAI (The Graduate University for Advanced Studies))

O. Hartbrich (University of Hawaii)

K. Hayasaka (Niigata University)

H. Hayashii (Nara Women’s University)

W.-S. Hou (Department of Physics, National Taiwan University)

T. Iijima (Graduate School of Science, Nagoya University)

K. Inami (Graduate School of Science, Nagoya University)

G. Inguglia (Institute of High Energy Physics)

A. Ishikawa (High Energy Accelerator Research Organization (KEK))

R. Itoh (SOKENDAI (The Graduate University for Advanced Studies))

M. Iwasaki (Osaka City University)

Y. Iwasaki (High Energy Accelerator Research Organization (KEK))

W. W. Jacobs (Indiana University)

Y. Jin (Department of Physics, University of Tokyo)

D. Joffe (Kennesaw State University)

K. K. Joo (Chonnam National University)

K. H. Kang (Kyungpook National University)

G. Karyan (Deutsches Elektronen–Synchrotron)

T. Kawasaki (Kitasato University)

H. Kichimi (High Energy Accelerator Research Organization (KEK))

D. Y. Kim (Soongsil University)

H. J. Kim (Kyungpook National University)

K. T. Kim (Korea University)

S. H. Kim (Hanyang University)

K. Kinoshita (University of Cincinnati)

P. Kodyš (Faculty of Mathematics and Physics, Charles University)

S. Korpar (J. Stefan Institute)

D. Kotchetkov (University of Hawaii)

P. Križan (J. Stefan Institute)

R. Kroeger (University of Mississippi)

P. Krokovny (Budker Institute of Nuclear Physics SB RAS)

T. Kuhr (Ludwig Maximilians University)

R. Kumar (Punjab Agricultural University)

A. Kuzmin (Budker Institute of Nuclear Physics SB RAS)

J. S. Lange (Justus-Liebig-Universität Gießen)

J. Y. Lee (Seoul National University)

S. C. Lee (Kyungpook National University)

L. K. Li (Institute of High Energy Physics, Chinese Academy of Sciences)

L. Li Gioi (Max-Planck-Institut für Physik)

J. Libby (Indian Institute of Technology Madras)

K. Lieret (Ludwig Maximilians University)

D. Liventsev (High Energy Accelerator Research Organization (KEK))

T. Luo (Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University)

J. MacNaughton (University of Miyazaki)

C. MacQueen (School of Physics, University of Melbourne)

M. Masuda (Earthquake Research Institute, University of Tokyo)

T. Matsuda (University of Miyazaki)

D. Matvienko (Budker Institute of Nuclear Physics SB RAS)

M. Merola (INFN - Sezione di Napoli)

H. Miyata (Niigata University)

G. B. Mohanty (Tata Institute of Fundamental Research)

T. Mori (Graduate School of Science, Nagoya University)

R. Mussa (INFN - Sezione di Torino)

T. Nakano (Research Center for Nuclear Physics, Osaka University)

M. Nakao (SOKENDAI (The Graduate University for Advanced Studies))

K. J. Nath (Indian Institute of Technology Guwahati)

Z. Natkaniec (H. Niewodniczanski Institute of Nuclear Physics)

M. Nayak (High Energy Accelerator Research Organization (KEK))

M. Niiyama (Kyoto University)

N. K. Nisar (University of Pittsburgh)

S. Nishida (SOKENDAI (The Graduate University for Advanced Studies))

K. Nishimura (University of Hawaii)

S. Ogawa (Toho University)

S. L. Olsen (Gyeongsang National University)

H. Ono (Nippon Dental University)

Y. Onuki (Department of Physics, University of Tokyo)

P. Oskin (P.N. Lebedev Physical Institute of the Russian Academy of Sciences)

W. Ostrowicz (H. Niewodniczanski Institute of Nuclear Physics)

P. Pakhlov (P.N. Lebedev Physical Institute of the Russian Academy of Sciences)

G. Pakhlova (P.N. Lebedev Physical Institute of the Russian Academy of Sciences)

B. Pal (Brookhaven National Laboratory)

T. Pang (University of Pittsburgh)

S. Pardi (INFN - Sezione di Napoli)

S.-H. Park (Yonsei University)

S. Paul (Department of Physics, Technische Universität München)

T. K. Pedlar (Luther College)

R. Pestotnik (J. Stefan Institute)

L. E. Piilonen (Virginia Polytechnic Institute and State University)

V. Popov (P.N. Lebedev Physical Institute of the Russian Academy of Sciences)

E. Prencipe (Forschungszentrum Jülich)

M. Ritter (Ludwig Maximilians University)

A. Rostomyan (Deutsches Elektronen–Synchrotron)

G. Russo (Università di Napoli Federico II)

Y. Sakai (SOKENDAI (The Graduate University for Advanced Studies))

M. Salehi (Ludwig Maximilians University)

S. Sandilya (University of Cincinnati)

T. Sanuki (Department of Physics, Tohoku University)

V. Savinov (University of Pittsburgh)

O. Schneider (École Polytechnique Fédérale de Lausanne (EPFL))

G. Schnell (University of the Basque Country UPV/EHU)

J. Schueler (University of Hawaii)

C. Schwanda (Institute of High Energy Physics)

Y. Seino (Niigata University)

K. Senyo (Yamagata University)

O. Seon (Graduate School of Science, Nagoya University)

M. E. Sevior (School of Physics, University of Melbourne)

V. Shebalin (University of Hawaii)

C. P. Shen (Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics, Fudan University)

J.-G. Shiu (Department of Physics, National Taiwan University)

B. Shwartz (Budker Institute of Nuclear Physics SB RAS)

A. Sokolov (Institute for High Energy Physics)

E. Solovieva (P.N. Lebedev Physical Institute of the Russian Academy of Sciences)

M. Starič (J. Stefan Institute)

J. F. Strube (Pacific Northwest National Laboratory)

M. Sumihama (Gifu University)

T. Sumiyoshi (Tokyo Metropolitan University)

W. Sutcliffe (Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie)

M. Takizawa (J-PARC Branch, KEK Theory Center, High Energy Accelerator Research Organization (KEK))

U. Tamponi (INFN - Sezione di Torino)

K. Tanida (Advanced Science Research Center, Japan Atomic Energy Agency)

F. Tenchini (Deutsches Elektronen–Synchrotron)

K. Trabelsi (LAL, Univ. Paris-Sud, CNRS/IN2P3, Université Paris-Saclay)

T. Uglov (P.N. Lebedev Physical Institute of the Russian Academy of Sciences)

Y. Unno (Hanyang University)

S. Uno (SOKENDAI (The Graduate University for Advanced Studies))

P. Urquijo (School of Physics, University of Melbourne)

Y. Usov (Budker Institute of Nuclear Physics SB RAS)

S. E. Vahsen (University of Hawaii)

R. Van Tonder (Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie)

G. Varner (University of Hawaii)

A. Vinokurova (Budker Institute of Nuclear Physics SB RAS)

B. Wang (Max-Planck-Institut für Physik)

C. H. Wang (National United University)

M.-Z. Wang (Department of Physics, National Taiwan University)

P. Wang (Institute of High Energy Physics, Chinese Academy of Sciences)

E. Won (Korea University)

S. B. Yang (Korea University)

H. Ye (Deutsches Elektronen–Synchrotron)

C. Z. Yuan (Institute of High Energy Physics, Chinese Academy of Sciences)

Y. Yusa (Niigata University)

Z. P. Zhang (University of Science and Technology of China)

V. Zhilich (Budker Institute of Nuclear Physics SB RAS)

V. Zhukova (P.N. Lebedev Physical Institute of the Russian Academy of Sciences)

EDITORIAL INFORMATION

Blind peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 12 weeks

 

Abstract | Full Text

Abstract We report a new measurement of the e + e − → ϒ(nS)π + π − (n = 1, 2, 3) cross sections at energies from 10.52 to 11.02 GeV using data collected with the Belle detector at the KEKB asymmetric-energy e + e − collider. We observe a new structure in the energy dependence of the cross sections; if described by a Breit-Wigner function its mass and width are found to be M = 10752.7 ± 5.9 − 1.1 + 0.7 MeV / c 2 $$ M=\left(10752.7\pm {5.9}_{-1.1}^{+0.7}\right)\mathrm{MeV}/{c}^2 $$ and Γ = 35.5 − 11.3 − 3.3 + 17.6 + 3.9 $$ \Gamma =\left({35.5}_{-11.3\kern0.5em -3.3}^{+17.6+3.9}\right) $$ MeV, where the first error is statistical and the second is systematic. The global significance of the new structure including systematic uncertainty is 5.2 standard deviations. We also find evidence for the e + e − → ϒ (1S)π + π − process at the energy 10.52 GeV, which is below the B B ¯ $$ \overline{B} $$ threshold.