Evidence for a vector charmoniumlike state in e+e- → Ds+ Ds2∗ (2573)-+ c. c.

(Belle Collaboration)

doi:10.1103/PhysRevD.101.091101

Evidence for a vector charmoniumlike state in e+e- → Ds+ Ds2∗ (2573)-+ c. c.

(Belle Collaboration)

Chair of Physics I

Beihang University
Fudan University
KEK and Graduate University for Advanced Studies (Sokendai)
High Energy Accelerator Research Organization (KEK)
University of Tokyo
Faculty of Sciences, King Abdulaziz University
University of Tabuk
Brookhaven National Laboratory
Univ. of Cincinnati
Budker Institute of Nuclear Physics (SB RAS)
Novosibirsk State University
National Research University Higher School of Economics
King Abdulaziz City for Science and Technology
Indian Institute of Technology Madras
Institute for High Energy Physics (IHEP)
University of Mississippi
National Research Nuclear University MEPhI
Indian Institute of Science Education and Research Mohali
Charles University in Prague
Jožef Stefan Institute
Wayne State University
Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences
University of Maribor
University of Hawaii
INFN Sezione di Napoli
Università degli Studi di Napoli Federico II
National Taiwan University
National Central University
Hanyang University
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
Korea Institute of Science and Technology Information
Gyeongsang National University
Sungkyunkwan University
Indian Institute of Technology Hyderabad
Deutsches Elektronen-Synchrotron (DESY)
Indian Institute of Technology Bhubaneswar
Pacific Northwest National Laboratory
University of Melbourne
Panjab University
Virginia Polytechnic Institute and State University
Humanoid Technologies Lab (H2T)
Univ. of Ljubljana
Niigata University
Nara Women's University
University of Sydney
Nagoya University
Österreichische Akademie der Wissenschaften
Osaka Prefecture University
Kyungpook National University
Chonnam National University
Kitasato University
Max-Planck-Institut für Physik
Seoul National University
Soongsil University
Yonsei University
Kennesaw State University
Malaviya National Institute of Technology Jaipur
Justus-Liebig-Universität Gießen
Institute of High Energy Physics Chinese Academy of Science
Beijing University
Ludwig-Maximilians-Universität München
University of Miyazaki
Tel Aviv University
University of Pittsburgh
Toho University
Nippon Dental University
Luther College, Decorah
Forschungszentrum Jülich (FZJ)
Tohoku University
Biodonostia Health Research Institute-CIBERNED-UPV-EHU
Basque Foundation for Science
Yamagata University
University of Nova Gorica
Gifu University
Tokyo Metropolitan University
Rheinische Friedrich-Wilhelms-Universität Bonn
Riken
Showa Pharmaceutical University
Japan Atomic Energy Agency
Tokyo Institute of Technology
National United University Taiwan
Korea University
Soochow University
University of Science and Technology of China

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22 Scopus citations

Abstract

We report the measurement of e+e-→Ds+Ds2∗(2573)-+c.c. via initial-state radiation using a data sample of an integrated luminosity of 921.9 fb-1 collected with the Belle detector at the γ(4S) and nearby. We find evidence for an enhancement with a 3.4σ significance in the invariant mass of Ds+Ds2∗(2573)-+c.c. The measured mass and width are (4619.8-8.0+8.9(stat.)±2.3(syst.)) MeV/c2 and (47.0-14.8+31.3(stat.)±4.6(syst.)) MeV, respectively. The mass, width, and quantum numbers of this enhancement are consistent with the charmoniumlike state at 4626 MeV/c2 recently reported by Belle in e+e-→Ds+Ds1(2536)-+c.c. The product of the e+e-→Ds+Ds2∗(2573)-+c.c. cross section and the branching fraction of Ds2∗(2573)-→D¯0K- is measured from Ds+Ds2∗(2573)- threshold to 5.6 GeV.

Original language	English
Article number	091101
Journal	Physical Review D
Volume	101
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevD.101.091101
State	Published - 1 May 2020

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10.1103/PhysRevD.101.091101

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@article{06a51914978046329431de4008c343d3,

title = "Evidence for a vector charmoniumlike state in e+e- → Ds+ Ds2∗ (2573)-+ c. c.",

abstract = "We report the measurement of e+e-→Ds+Ds2∗(2573)-+c.c. via initial-state radiation using a data sample of an integrated luminosity of 921.9 fb-1 collected with the Belle detector at the γ(4S) and nearby. We find evidence for an enhancement with a 3.4σ significance in the invariant mass of Ds+Ds2∗(2573)-+c.c. The measured mass and width are (4619.8-8.0+8.9(stat.)±2.3(syst.)) MeV/c2 and (47.0-14.8+31.3(stat.)±4.6(syst.)) MeV, respectively. The mass, width, and quantum numbers of this enhancement are consistent with the charmoniumlike state at 4626 MeV/c2 recently reported by Belle in e+e-→Ds+Ds1(2536)-+c.c. The product of the e+e-→Ds+Ds2∗(2573)-+c.c. cross section and the branching fraction of Ds2∗(2573)-→D¯0K- is measured from Ds+Ds2∗(2573)- threshold to 5.6 GeV.",

author = "\{(Belle Collaboration)\} and S. Jia and Shen, \{C. P.\} and I. Adachi and H. Aihara and \{Al Said\}, S. and Asner, \{D. M.\} and H. Atmacan and V. Aulchenko and T. Aushev and R. Ayad and I. Badhrees and P. Behera and K. Belous and J. Bennett and D. Besson and V. Bhardwaj and T. Bilka and J. Biswal and G. Bonvicini and A. Bozek and M. Bra{\v c}ko and Browder, \{T. E.\} and M. Campajola and D. {\v C}ervenkov and P. Chang and A. Chen and Cheon, \{B. G.\} and K. Chilikin and K. Cho and Choi, \{S. K.\} and Y. Choi and S. Choudhury and D. Cinabro and S. Cunliffe and N. Dash and \{De Nardo\}, G. and \{Di Capua\}, F. and Z. Dole{\v Z}al and Dong, \{T. V.\} and S. Eidelman and D. Epifanov and Fast, \{J. E.\} and T. Ferber and D. Ferlewicz and Fulsom, \{B. G.\} and R. Garg and V. Gaur and N. Gabyshev and A. Garmash and S. Paul",

note = "Publisher Copyright: {\textcopyright} 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the {"}https://creativecommons.org/licenses/by/4.0/{"}Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.",

year = "2020",

month = may,

day = "1",

doi = "10.1103/PhysRevD.101.091101",

language = "English",

volume = "101",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "9",

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TY - JOUR

T1 - Evidence for a vector charmoniumlike state in e+e- → Ds+ Ds2∗ (2573)-+ c. c.

AU - (Belle Collaboration)

AU - Jia, S.

AU - Shen, C. P.

AU - Adachi, I.

AU - Aihara, H.

AU - Al Said, S.

AU - Asner, D. M.

AU - Atmacan, H.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Ayad, R.

AU - Badhrees, I.

AU - Behera, P.

AU - Belous, K.

AU - Bennett, J.

AU - Besson, D.

AU - Bhardwaj, V.

AU - Bilka, T.

AU - Biswal, J.

AU - Bonvicini, G.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Campajola, M.

AU - Červenkov, D.

AU - Chang, P.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Cho, K.

AU - Choi, S. K.

AU - Choi, Y.

AU - Choudhury, S.

AU - Cinabro, D.

AU - Cunliffe, S.

AU - Dash, N.

AU - De Nardo, G.

AU - Di Capua, F.

AU - DoleŽal, Z.

AU - Dong, T. V.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Fast, J. E.

AU - Ferber, T.

AU - Ferlewicz, D.

AU - Fulsom, B. G.

AU - Garg, R.

AU - Gaur, V.

AU - Gabyshev, N.

AU - Garmash, A.

AU - Paul, S.

N1 - Publisher Copyright: © 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

PY - 2020/5/1

Y1 - 2020/5/1

N2 - We report the measurement of e+e-→Ds+Ds2∗(2573)-+c.c. via initial-state radiation using a data sample of an integrated luminosity of 921.9 fb-1 collected with the Belle detector at the γ(4S) and nearby. We find evidence for an enhancement with a 3.4σ significance in the invariant mass of Ds+Ds2∗(2573)-+c.c. The measured mass and width are (4619.8-8.0+8.9(stat.)±2.3(syst.)) MeV/c2 and (47.0-14.8+31.3(stat.)±4.6(syst.)) MeV, respectively. The mass, width, and quantum numbers of this enhancement are consistent with the charmoniumlike state at 4626 MeV/c2 recently reported by Belle in e+e-→Ds+Ds1(2536)-+c.c. The product of the e+e-→Ds+Ds2∗(2573)-+c.c. cross section and the branching fraction of Ds2∗(2573)-→D¯0K- is measured from Ds+Ds2∗(2573)- threshold to 5.6 GeV.

AB - We report the measurement of e+e-→Ds+Ds2∗(2573)-+c.c. via initial-state radiation using a data sample of an integrated luminosity of 921.9 fb-1 collected with the Belle detector at the γ(4S) and nearby. We find evidence for an enhancement with a 3.4σ significance in the invariant mass of Ds+Ds2∗(2573)-+c.c. The measured mass and width are (4619.8-8.0+8.9(stat.)±2.3(syst.)) MeV/c2 and (47.0-14.8+31.3(stat.)±4.6(syst.)) MeV, respectively. The mass, width, and quantum numbers of this enhancement are consistent with the charmoniumlike state at 4626 MeV/c2 recently reported by Belle in e+e-→Ds+Ds1(2536)-+c.c. The product of the e+e-→Ds+Ds2∗(2573)-+c.c. cross section and the branching fraction of Ds2∗(2573)-→D¯0K- is measured from Ds+Ds2∗(2573)- threshold to 5.6 GeV.

UR - https://www.scopus.com/pages/publications/85087712842

U2 - 10.1103/PhysRevD.101.091101

DO - 10.1103/PhysRevD.101.091101

M3 - Article

AN - SCOPUS:85087712842

SN - 2470-0010

VL - 101

JO - Physical Review D

JF - Physical Review D

IS - 9

M1 - 091101

ER -

Evidence for a vector charmoniumlike state in e+e- → Ds+ Ds2∗ (2573)-+ c. c.

Abstract

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