Standard

Observation of X(2370) and search for X(2120) in J/ ψ→ γKK¯ η′. / BESIII Collaboration.

In: European Physical Journal C, Vol. 80, No. 8, 746, 01.08.2020.

Research output: Contribution to journal › Article › peer-review

Harvard

BESIII Collaboration 2020, 'Observation of X(2370) and search for X(2120) in J/ ψ→ γKK¯ η′', European Physical Journal C, vol. 80, no. 8, 746. https://doi.org/10.1140/epjc/s10052-020-8078-4

APA

BESIII Collaboration (2020). Observation of X(2370) and search for X(2120) in J/ ψ→ γKK¯ η′. European Physical Journal C, 80(8), [746]. https://doi.org/10.1140/epjc/s10052-020-8078-4

Vancouver

BESIII Collaboration. Observation of X(2370) and search for X(2120) in J/ ψ→ γKK¯ η′. European Physical Journal C. 2020 Aug 1;80(8):746. doi: 10.1140/epjc/s10052-020-8078-4

Author

BESIII Collaboration. / Observation of X(2370) and search for X(2120) in J/ ψ→ γKK¯ η′. In: European Physical Journal C. 2020 ; Vol. 80, No. 8.

BibTeX

@article{8ac35198b5fc4c5ca3429730029f1096,
title = "Observation of X(2370) and search for X(2120) in J/ ψ→ γKK¯ η′",
abstract = "Using a sample of 1.31×109J/ψ events collected with the BESIII detector, we perform a study of J/ ψ→ γKK¯ η′. X(2370) is observed in the KK¯ η′ invariant-mass distribution with a statistical significance of 8.3 σ. Its resonance parameters are measured to be M=2341.6±6.5(stat.)±5.7(syst.)MeV/c2 and Γ=117±10(stat.)±8(syst.)MeV. The product branching fractions for J/ ψ→ γX(2370) , X(2370) → K+K-η′ and J/ψ→γX(2370),X(2370)→KS0KS0η′ are determined to be (1.79±0.23(stat.)±0.65(syst.))×10-5 and (1.18±0.32(stat.)±0.39(syst.))×10-5, respectively. No evident signal for X(2120) is observed in the KK¯ η′ invariant-mass distribution. The upper limits for the product branching fractions of B(J/ ψ→ γX(2120) → γK+K-η′) and B(J/ψ→γX(2120)→γKS0KS0η′) are determined to be 1.49 × 10 - 5 and 6.38 × 10 - 6 at the 90% confidence level, respectively.",
author = "{BESIII Collaboration} and M. Ablikim and Achasov, {M. N.} and P. Adlarson and S. Ahmed and M. Albrecht and M. Alekseev and A. Amoroso and Q. An and Anita and Y. Bai and O. Bakina and Ferroli, {R. Baldini} and I. Balossino and Y. Ban and K. Begzsuren and Bennett, {J. V.} and N. Berger and M. Bertani and D. Bettoni and F. Bianchi and J. Biernat and J. Bloms and I. Boyko and Briere, {R. A.} and H. Cai and X. Cai and A. Calcaterra and Cao, {G. F.} and N. Cao and Cetin, {S. A.} and J. Chai and Chang, {J. F.} and Chang, {W. L.} and G. Chelkov and Chen, {D. Y.} and G. Chen and Chen, {H. S.} and Chen, {J. C.} and Chen, {M. L.} and Chen, {S. J.} and Chen, {Y. B.} and W. Cheng and G. Cibinetto and F. Cossio and Cui, {X. F.} and Dai, {H. L.} and Dai, {J. P.} and Dai, {X. C.} and Muchnoi, {N. Yu} and Nikolaev, {I. B.}",
note = "Funding Information: The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contract no. 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts nos. 11625523, 11635010, 1332201, 11735014, 11565006; National Natural Science Foundation of China (NSFC) under Contract nos. 11835012, 11905092; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts Nnos. U1532257, U1532258, U1732263, U1832207; CAS Key Research Program of Frontier Sciences under Contracts nos. QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040; 100 Talents Program of CAS; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Contract no. Collaborative Research Center CRC 1044; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) under Contract no. 530-4CDP03; Ministry of Development of Turkey under Contract no. DPT2006K-120470; National Science and Technology fund; The Knut and Alice Wallenberg Foundation (Sweden) under Contract no. 2016.0157; The Royal Society, UK under Contract no. DH160214; The Swedish Research Council; U.S. Department of Energy under Contracts nos. DE-FG02-05ER41374, DE-SC-0010118, DE-SC-0012069; University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt. Funding Information: The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contract no. 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts nos. 11625523, 11635010, 1332201, 11735014, 11565006; National Natural Science Foundation of China (NSFC) under Contract nos. 11835012, 11905092; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts Nnos. U1532257, U1532258, U1732263, U1832207; CAS Key Research Program of Frontier Sciences under Contracts nos. QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040; 100 Talents Program of CAS; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Contract no. Collaborative Research Center CRC 1044; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) under Contract no. 530-4CDP03; Ministry of Development of Turkey under Contract no. DPT2006K-120470; National Science and Technology fund; The Knut and Alice Wallenberg Foundation (Sweden) under Contract no. 2016.0157; The Royal Society, UK under Contract no. DH160214; The Swedish Research Council; U.S. Department of Energy under Contracts nos. DE-FG02-05ER41374, DE-SC-0010118, DE-SC-0012069; University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt. Publisher Copyright: {\textcopyright} 2020, The Author(s). Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",
year = "2020",
month = aug,
day = "1",
doi = "10.1140/epjc/s10052-020-8078-4",
language = "English",
volume = "80",
journal = "European Physical Journal C",
issn = "1434-6044",
publisher = "Springer Nature",
number = "8",

}

RIS

TY - JOUR

T1 - Observation of X(2370) and search for X(2120) in J/ ψ→ γKK¯ η′

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. N.

AU - Adlarson, P.

AU - Ahmed, S.

AU - Albrecht, M.

AU - Alekseev, M.

AU - Amoroso, A.

AU - An, Q.

AU - Anita,

AU - Bai, Y.

AU - Bakina, O.

AU - Ferroli, R. Baldini

AU - Balossino, I.

AU - Ban, Y.

AU - Begzsuren, K.

AU - Bennett, J. V.

AU - Berger, N.

AU - Bertani, M.

AU - Bettoni, D.

AU - Bianchi, F.

AU - Biernat, J.

AU - Bloms, J.

AU - Boyko, I.

AU - Briere, R. A.

AU - Cai, H.

AU - Cai, X.

AU - Calcaterra, A.

AU - Cao, G. F.

AU - Cao, N.

AU - Cetin, S. A.

AU - Chai, J.

AU - Chang, J. F.

AU - Chang, W. L.

AU - Chelkov, G.

AU - Chen, D. Y.

AU - Chen, G.

AU - Chen, H. S.

AU - Chen, J. C.

AU - Chen, M. L.

AU - Chen, S. J.

AU - Chen, Y. B.

AU - Cheng, W.

AU - Cibinetto, G.

AU - Cossio, F.

AU - Cui, X. F.

AU - Dai, H. L.

AU - Dai, J. P.

AU - Dai, X. C.

AU - Muchnoi, N. Yu

AU - Nikolaev, I. B.

N1 - Funding Information: The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contract no. 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts nos. 11625523, 11635010, 1332201, 11735014, 11565006; National Natural Science Foundation of China (NSFC) under Contract nos. 11835012, 11905092; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts Nnos. U1532257, U1532258, U1732263, U1832207; CAS Key Research Program of Frontier Sciences under Contracts nos. QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040; 100 Talents Program of CAS; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Contract no. Collaborative Research Center CRC 1044; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) under Contract no. 530-4CDP03; Ministry of Development of Turkey under Contract no. DPT2006K-120470; National Science and Technology fund; The Knut and Alice Wallenberg Foundation (Sweden) under Contract no. 2016.0157; The Royal Society, UK under Contract no. DH160214; The Swedish Research Council; U.S. Department of Energy under Contracts nos. DE-FG02-05ER41374, DE-SC-0010118, DE-SC-0012069; University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt. Funding Information: The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contract no. 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts nos. 11625523, 11635010, 1332201, 11735014, 11565006; National Natural Science Foundation of China (NSFC) under Contract nos. 11835012, 11905092; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts Nnos. U1532257, U1532258, U1732263, U1832207; CAS Key Research Program of Frontier Sciences under Contracts nos. QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040; 100 Talents Program of CAS; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Contract no. Collaborative Research Center CRC 1044; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) under Contract no. 530-4CDP03; Ministry of Development of Turkey under Contract no. DPT2006K-120470; National Science and Technology fund; The Knut and Alice Wallenberg Foundation (Sweden) under Contract no. 2016.0157; The Royal Society, UK under Contract no. DH160214; The Swedish Research Council; U.S. Department of Energy under Contracts nos. DE-FG02-05ER41374, DE-SC-0010118, DE-SC-0012069; University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt. Publisher Copyright: © 2020, The Author(s). Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/8/1

Y1 - 2020/8/1

N2 - Using a sample of 1.31×109J/ψ events collected with the BESIII detector, we perform a study of J/ ψ→ γKK¯ η′. X(2370) is observed in the KK¯ η′ invariant-mass distribution with a statistical significance of 8.3 σ. Its resonance parameters are measured to be M=2341.6±6.5(stat.)±5.7(syst.)MeV/c2 and Γ=117±10(stat.)±8(syst.)MeV. The product branching fractions for J/ ψ→ γX(2370) , X(2370) → K+K-η′ and J/ψ→γX(2370),X(2370)→KS0KS0η′ are determined to be (1.79±0.23(stat.)±0.65(syst.))×10-5 and (1.18±0.32(stat.)±0.39(syst.))×10-5, respectively. No evident signal for X(2120) is observed in the KK¯ η′ invariant-mass distribution. The upper limits for the product branching fractions of B(J/ ψ→ γX(2120) → γK+K-η′) and B(J/ψ→γX(2120)→γKS0KS0η′) are determined to be 1.49 × 10 - 5 and 6.38 × 10 - 6 at the 90% confidence level, respectively.

AB - Using a sample of 1.31×109J/ψ events collected with the BESIII detector, we perform a study of J/ ψ→ γKK¯ η′. X(2370) is observed in the KK¯ η′ invariant-mass distribution with a statistical significance of 8.3 σ. Its resonance parameters are measured to be M=2341.6±6.5(stat.)±5.7(syst.)MeV/c2 and Γ=117±10(stat.)±8(syst.)MeV. The product branching fractions for J/ ψ→ γX(2370) , X(2370) → K+K-η′ and J/ψ→γX(2370),X(2370)→KS0KS0η′ are determined to be (1.79±0.23(stat.)±0.65(syst.))×10-5 and (1.18±0.32(stat.)±0.39(syst.))×10-5, respectively. No evident signal for X(2120) is observed in the KK¯ η′ invariant-mass distribution. The upper limits for the product branching fractions of B(J/ ψ→ γX(2120) → γK+K-η′) and B(J/ψ→γX(2120)→γKS0KS0η′) are determined to be 1.49 × 10 - 5 and 6.38 × 10 - 6 at the 90% confidence level, respectively.

UR - http://www.scopus.com/inward/record.url?scp=85089524371&partnerID=8YFLogxK

U2 - 10.1140/epjc/s10052-020-8078-4

DO - 10.1140/epjc/s10052-020-8078-4

M3 - Article

AN - SCOPUS:85089524371

VL - 80

JO - European Physical Journal C

JF - European Physical Journal C

SN - 1434-6044

IS - 8

M1 - 746

ER -

ID: 27890606