Data di Pubblicazione:
2023
Abstract:
The decay eta(c)(2S) -> pi(+)pi(-)eta is searched for through the radiative transition psi(3686) -> gamma eta(c)(2S) using 448 million psi(3686) events accumulated at the BESIII detector. The first evidence of eta(c)(2S) -> pi(+)pi(-)eta is found with a statistical significance of 3.5 sigma. The product of the branching fractions of psi(3686) -> gamma eta(c)(2S) and eta(c)(2S) -> pi(+)pi(-)eta is measured to be Br(psi(3686) -> gamma eta(c)(2S)) x Br(eta(c)(2S) -> pi(+)pi(-)eta) = (2.97 +/- 0.81 +/- 0.26) x 10(-6), where the first uncertainty is statistical and the second one is systematic. The branching fraction of the decay eta(c)(2S) -> pi(+)pi(-)eta is determined to be Br(eta(c)(2S) -> pi(+)pi(-)eta) = (42.4 +/- 11.6 +/- 3.8 +/- 30.3) x 10(-4), where the third uncertainty is transferred from the uncertainty of the branching fraction of psi(3686) -> gamma eta(c)(2S).
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
M. Ablikim; M.???N. Achasov; P. Adlarson; M. Albrecht; R. Aliberti; A. Amoroso; M.???R. An; Q. An; Y. Bai; O. Bakina; R. Baldini Ferroli; I. Balossino; Y. Ban; V. Batozskaya; D. Becker; K. Begzsuren; N. Berger; M. Bertani; D. Bettoni; F. Bianchi; E. Bianco; J. Bloms; A. Bortone; I. Boyko; R.???A. Briere; A. Brueggemann; H. Cai; X. Cai; A. Calcaterra; G.???F. Cao; N. Cao; S.???A. Cetin; J.???F. Chang; W.???L. Chang; G.???R. Che; G. Chelkov; C. Chen; Chao Chen; G. Chen; H.???S. Chen; M.???L. Chen; S.???J. Chen; S.???M. Chen; T. Chen; X.???R. Chen; X.???T. Chen; Y.???B. Chen; Z.???J. Chen; W.???S. Cheng; S.???K. Choi; X. Chu; G. Cibinetto; F. Cossio; J.???J. Cui; H.???L. Dai; J.???P. Dai; A. Dbeyssi; R.???E. de Boer; D. Dedovich; Z.???Y. Deng; A. Denig; I. Denysenko; M. Destefanis; F. De Mori; Y. Ding; Y. Ding; J. Dong; L.???Y. Dong; M.???Y. Dong; X. Dong; S.???X. Du; Z.???H. Duan; P. Egorov; Y.???L. Fan; J. Fang; S.???S. Fang; W.???X. Fang; Y. Fang; R. Farinelli; L. Fava; F. Feldbauer; G. Felici; C.???Q. Feng; J.???H. Feng; K. Fischer; M. Fritsch; C. Fritzsch; C.???D. Fu; H. Gao; Y.???N. Gao; Yang Gao; S. Garbolino; I. Garzia; P.???T. Ge; Z.???W. Ge; C. Geng; E.???M. Gersabeck; A. Gilman; K. Goetzen; L. Gong; W.???X. Gong; W. Gradl; M. Greco; L.???M. Gu; M.???H. Gu; Y.???T. Gu; C.???Y. Guan; A.???Q. Guo; L.???B. Guo; R.???P. Guo; Y.???P. Guo; A. Guskov; W.???Y. Han; X.???Q. Hao; F.???A. Harris; K.???K. He; K.???L. He; F.???H. Heinsius; C.???H. Heinz; Y.???K. Heng; C. Herold; G.???Y. Hou; Y.???R. Hou; Z.???L. Hou; H.???M. Hu; J.???F. Hu; T. Hu; Y. Hu; G.???S. Huang; K.???X. Huang; L.???Q. Huang; X.???T. Huang; Y.???P. Huang; Z. Huang; T. Hussain; N. H??sken; W. Imoehl; M. Irshad; J. Jackson; S. Jaeger; S. Janchiv; E. Jang; J.???H. Jeong; Q. Ji; Q.???P. Ji; X.???B. Ji; X.???L. Ji; Y.???Y. Ji; Z.???K. Jia; S.???S. Jiang; X.???S. Jiang; Y. Jiang; J.???B. Jiao; Z. Jiao; S. Jin; Y. Jin; M.???Q. Jing; T. Johansson; N. Kalantar-Nayestanaki; X.???S. Kang; R. Kappert; M. Kavatsyuk; B.???C. Ke; I.???K. Keshk; A. Khoukaz; R. Kiuchi; R. Kliemt; L. Koch; O.???B. Kolcu; B. Kopf; M. Kuemmel; M. Kuessner; A. Kupsc; W. K??hn; J.???J. Lane; J.???S. Lange; P. Larin; A. Lavania; L. Lavezzi; T.???T. Lei; Z.???H. Lei; H. Leithoff; M. Lellmann; T. Lenz; C. Li; C. Li; C.???H. Li; Cheng Li; D.???M. Li; F. Li; G. Li; H. Li; H. Li; H.???B. Li; H.???J. Li; H.???N. Li; J.???Q. Li; J.???S. Li; J.???W. Li; Ke Li; L.???J. Li; L.???K. Li; Lei Li; M.???H. Li; P.???R. Li; S.???X. Li; S.???Y. Li; T. Li; W.???D. Li; W.???G. Li; X.???H. Li; X.???L. Li; Xiaoyu Li; Y.???G. Li; Z.???X. Li; Z.???Y. Li; C. Liang; H. Liang; H. Liang; H. Liang; Y.???F. Liang; Y.???T. Liang; G.???R. Liao; L.???Z. Liao; J. Libby; A. Limphirat; C.???X. Lin; D.???X. Lin; T. Lin; B.???J. Liu; C. Liu; C.???X. Liu; D. Liu; F.???H. Liu; Fang Liu; Feng Liu; G.???M. Liu; H. Liu; H.???B. Liu; H.???M. Liu; Huanhuan Liu; Huihui Liu; J.???B. Liu; J.???L. Liu; J.???Y. Liu; K. Liu; K.???Y. Liu; Ke Liu; L. Liu; Lu Liu; M.???H. Liu; P.???L. Liu; Q. Liu; S.???B. Liu; T. Liu; W.???K. Liu; W.???M. Liu; X. Liu; Y. Liu; Y.???B. Liu; Z.???A. Liu; Z.???Q. Liu; X.???C. Lou; F.???X. Lu; H.???J. Lu; J.???G. Lu; X.???L. Lu; Y. Lu; Y.???P. Lu; Z.???H. Lu; C.???L. Luo; M.???X. Luo; T. Luo; X.???L. Luo; X.???R. Lyu; Y.???F. Lyu; F.???C. Ma; H.???L. Ma; L.???L. Ma; M.???M. Ma; Q.???M. Ma; R.???Q. Ma; R.???T. Ma; X.???Y. Ma; Y. Ma; F.???E. Maas; M. Maggiora; S. Maldaner; S. Malde; Q.???A. Malik; A. Mangoni; Y.???J. Mao; Z.???P. Mao; S. Marcello; Z.???X. Meng; J.???G. Messchendorp; G. Mezzadri; H. Miao; T.???J. Min; R.???E. Mitchell; X.???H. Mo; N.???Yu. Muchnoi; Y. Nefedov; F. Nerling; I.???B. Nikolaev; Z. Ning; S. Nisar; Y. Niu; S.???L. Olsen; Q. Ouyang; S. Pacetti; X. Pan; Y. Pan; A. Pathak; Y.???P. Pei; M. Pelizaeus; H.???P. Peng; K. Peters; J.???L. Ping; R.???G. Ping; S. Plura; S. Pogodin; V. Prasad; F.???Z. Qi; H. Qi; H.???R. Qi; M. Qi; T.???Y. Qi; S. Qian; W.???B. Qian; Z. Qian; C.???F. Qiao; J.???J. Qin; L.???Q. Qin;
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