Research output: Contribution to journal › Article › peer-review
Measurements of e+e- →η cπ+π-π0, η cπ+π-, and η cπ0γ at s from 4.18 to 4.60 GeV, and search for a Z c state close to the D D ¯ threshold decaying to η cπ at s =4.23 GeV. / BESIII Collaboration.
In: Physical Review D, Vol. 103, No. 3, 032006, 25.02.2021.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Measurements of e+e- →η cπ+π-π0, η cπ+π-, and η cπ0γ at s from 4.18 to 4.60 GeV, and search for a Z c state close to the D D ¯ threshold decaying to η cπ at s =4.23 GeV
AU - BESIII Collaboration
AU - Ablikim, M.
AU - Achasov, M. N.
AU - Adlarson, P.
AU - Ahmed, S.
AU - Albrecht, M.
AU - Aliberti, R.
AU - Amoroso, A.
AU - An, Q.
AU - Anita,
AU - Bai, X. H.
AU - Bai, Y.
AU - Bakina, O.
AU - Baldini Ferroli, R.
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 - Bortone, A.
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 - Chang, J. F.
AU - Chang, W. L.
AU - Chelkov, G.
AU - Chen, D. Y.
AU - Chen, G.
AU - Chen, H. S.
AU - Chen, M. L.
AU - Chen, S. J.
AU - Chen, X. R.
AU - Chen, Y. B.
AU - Chen, Z. J.
AU - Cheng, W. S.
AU - Cibinetto, G.
AU - Cossio, F.
AU - Cui, X. F.
AU - Dai, H. L.
AU - Muchnoi, N. Yu
AU - Nikolaev, I. B.
N1 - Publisher Copyright: © 2021 authors. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/2/25
Y1 - 2021/2/25
N2 - We study ηc production at center-of-mass energies s from 4.18 to 4.60 GeV in e+e- annihilation data collected with the BESIII detector operating at the BEPCII storage ring, corresponding to 7.3 fb-1 of integrated luminosity. We measure the cross sections of the three different exclusive reactions e+e-→ηcπ+π-π0, e+e-→ηcπ+π-, and e+e-→ηcπ0γ. We find significant ηc production in e+e-→ηcπ+π-π0 at s of 4.23 GeV and 4.26 GeV and observe a significant energy-dependent Born cross section that we measure to be consistent with the production via the intermediate Y(4260) resonance. In addition, we perform a search for a charmoniumlike Zc state close to the DD¯ threshold that decays to ηcπ, involving ground state charmonium, and observe no signal. Corresponding upper limits on the cross section of ηc and Zc production are provided, where the yields are not found to be significant.
AB - We study ηc production at center-of-mass energies s from 4.18 to 4.60 GeV in e+e- annihilation data collected with the BESIII detector operating at the BEPCII storage ring, corresponding to 7.3 fb-1 of integrated luminosity. We measure the cross sections of the three different exclusive reactions e+e-→ηcπ+π-π0, e+e-→ηcπ+π-, and e+e-→ηcπ0γ. We find significant ηc production in e+e-→ηcπ+π-π0 at s of 4.23 GeV and 4.26 GeV and observe a significant energy-dependent Born cross section that we measure to be consistent with the production via the intermediate Y(4260) resonance. In addition, we perform a search for a charmoniumlike Zc state close to the DD¯ threshold that decays to ηcπ, involving ground state charmonium, and observe no signal. Corresponding upper limits on the cross section of ηc and Zc production are provided, where the yields are not found to be significant.
UR - http://www.scopus.com/inward/record.url?scp=85102050132&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/68248a26-afc8-3c73-8cc8-6f4307ca46d8/
U2 - 10.1103/PhysRevD.103.032006
DO - 10.1103/PhysRevD.103.032006
M3 - Article
AN - SCOPUS:85102050132
VL - 103
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 3
M1 - 032006
ER -
ID: 28010781