@article{6400407a68684a1a9a29a06f14862b24,
title = "Search for ηc(2S)hc→ pp¯ decays and measurements of the χcJ→ pp¯ branching fractions",
abstract = "Using a sample of 1.06 × 108φ(3686) events collected with the BESIII detector at BEPCII, the decays ηc(2S) → pp¯ and hcpp¯ are searched for, where ηc(2S) and hc are reconstructed in the decay chains φ(3686) → γηc(2S), ηc(2S) → pp¯ and χ(3686) → π0hc, hc→ pp¯, respectively. No significant signals are observed. The upper limits of the product branching fractions are determined to be B(φ(3686) → γηc(2S)) × B(ηc(2S) → pp¯) < 1.4 × 10-6and B(φ(3686) → π0hc) × B(hc→ pp¯) < 1.3 × 10-7at the 90% C.L.. The branching fractions for χcJ→ pp¯ (J = 0, 1, 2) are also measured to be (24.5 ± 0.8 ± 1.3, 8.6 ± 0.5 ± 0.5, 8.4 ± 0.5 ± 0.5) × 10-5, which are the world's most precise measurements.",
author = "{BESlll Collaboration} and M. Ablikim and Achasov, {M. N.} and Ai, {X. C.} and O. Albayrak and Ambrose, {D. J.} and An, {F. F.} and Q. An and Bai, {J. Z.} and {Baldini Ferroli}, R. and Y. Ban and Bennett, {J. V.} and M. Bertani and Bian, {J. M.} and E. Boger and O. Bondarenko and I. Boyko and S. Braun and Briere, {R. A.} and H. Cai and X. Cai and O. Cakir and A. Calcaterra and Cao, {G. F.} and Cetin, {S. A.} and Chang, {J. F.} and G. Chelkov and G. Chen and Chen, {H. S.} and Chen, {J. C.} and Chen, {M. L.} and Chen, {S. J.} and X. Chen and Chen, {X. R.} and Chen, {Y. B.} and Cheng, {H. P.} and Chu, {X. K.} and Chu, {Y. P.} and D. Cronin-Hennessy and Dai, {H. L.} and Dai, {J. P.} and D. Dedovich and Deng, {Z. Y.} and A. Denig and I. Denysenko and M. Destefanis and Ding, {W. M.} and Y. Ding and C. Dong and J. Dong and Dong, {L. Y.}",
note = "Publisher Copyright: {\textcopyright} 2013 American Physical Society.",
year = "2013",
month = dec,
day = "3",
doi = "10.1103/PhysRevD.88.112001",
language = "English",
volume = "88",
journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",
issn = "1550-7998",
number = "11",
}