Observation of h1 (1380) in the J/ψ →η′K K ̄ π decay OBSERVATION of h1 (1380) in Jψ ... M. ABLIKIM et al.

19Citations
Citations of this article
12Readers
Mendeley users who have this article in their library.

This article is free to access.

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)K̄+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)0K̄0+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.

Cite

CITATION STYLE

APA

Ablikim, M., Achasov, M. N., Ahmed, S., Albrecht, M., Amoroso, A., An, F. F., … Zou, J. H. (2018). Observation of h1 (1380) in the J/ψ →η′K K ̄ π decay OBSERVATION of h1 (1380) in Jψ ... M. ABLIKIM et al. Physical Review D, 98(7). https://doi.org/10.1103/PhysRevD.98.072005

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free