@article{5442c28f14844191aaa233800f3841b1,
title = "Observation of h1 (1380) in the J/ψ →η′K K{\= } π decay OBSERVATION of h1 (1380) in Jψ ... M. ABLIKIM et al.",
abstract = "Using 1.31×109 J/ψ events collected by the BESIII detector at the BEPCII e+e- collider, we report the first observation of the h1(1380) in J/ψ→η′h1(1380) with a significance of more than ten standard deviations. The mass and width of the possible axial-vector strangeonium candidate h1(1380) are measured to be M=(1423.2±2.1±7.3) MeV/c2 and Γ=(90.3±9.8±17.5) MeV. The product branching fractions, assuming no interference, are determined to be B(J/ψ→η′h1(1380))×B(h1(1380)→K∗(892)+K-+c.c.)=(1.51±0.09±0.21)×10-4 in η′K+K-π0 mode and B(J/ψ→η′h1(1380))×B(h1(1380)→K∗(892){\=K}+c.c.)=(2.16±0.12±0.29)×10-4 in η′KS0K±π mode. The first uncertainties are statistical and the second are systematic. Isospin symmetry violation is observed in the decays h1(1380)→K∗(892)+K-+c.c. and h1(1380)→K∗(892)0{\=K}0+c.c.. Based on the measured h1(1380) mass, the mixing angle between the states h1(1170) and h1(1380) is determined to be (35.9±2.6)°, consistent with theoretical expectations.",
keywords = "QUARK-MODEL, MESON, VECTOR, WAVE",
author = "{BESIII Collaboration} and M. Ablikim and Achasov, {M. N.} and S. Ahmed and M. Albrecht and A. Amoroso and An, {F. F.} and Q. An and Bai, {J. Z.} and Y. Bai and O. Bakina and {Baldini Ferroli}, R. and Y. Ban and Bennett, {D. W.} and Bennett, {J. V.} and N. Berger and M. Bertani and D. Bettoni and Bian, {J. M.} and F. Bianchi and E. Boger and I. Boyko 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 J. Chai and Chang, {J. F.} and G. Chelkov and G. Chen and Chen, {H. S.} and Chen, {J. C.} and Chen, {M. L.} and Chen, {P. L.} and Chen, {S. J.} and Chen, {X. R.} and Chen, {Y. B.} and Chu, {X. K.} and G. Cibinetto and Dai, {H. L.} and Dai, {J. P.} and A. Dbeyssi and D. Dedovich and Deng, {Z. Y.} and A. Denig and I. Denysenko and Muchnoi, {N. Yu} and Nikolaev, {I. B.}",
note = "Publisher Copyright: {\textcopyright} 2018 authors. Published by the American Physical Society.",
year = "2018",
month = oct,
day = "18",
doi = "10.1103/PhysRevD.98.072005",
language = "English",
volume = "98",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "AMER PHYSICAL SOC",
number = "7",
}