First observation of $\eta(1405)$ decays into $f_0(980)\pi^0$

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Date

2012

Journal Title

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Volume Title

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American Physical Society

Abstract

The decays $J/\psi\rightarrow\gamma\pi^+\pi^-\pi^0$ and $J/\psi\rightarrow\gamma\pi^0\pi^0\pi^0$ are analyzed using a sample of $225\times10^6$ $J/\psi$ events collected with the BESIII detector. The decay of $\eta(1405)$→$f_0(980)\pi^0$ with a large isospin violation is observed for the first time. The width of the $f_0(980)$ observed in the dipion mass spectra is anomalously narrower than the world average. Decay rates for three-pion decays of the $\eta^′$ are also measured precisely.

Description

Keywords

Decayrate, Isospin violation, Mass spectra, Mass spectrometry, Decay (organic)

Citation

Ablikim, M., Achasov, M. N., Alberto, D., Ambrose, D. J., An, F. F., An, Q., . . . Zuo, J. X. (2012). First observation of $\eta(1405)$ decays into $f_0(980)\pi^0$. Physical Review Letters, 108(18), 182001. http://dx.doi.org/10.1103/PhysRevLett.108.182001

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© 2012 American Physical Society.

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Article