Observation of $\chi_{cJ}$ Decays to $\Lambda \bar{\Lambda}\pi^{+}\pi^{-}$ - INSPIRE

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Observation of $\chi_{cJ}$ Decays to $\Lambda \bar{\Lambda}\pi^{+}\pi^{-}$

BESIII

Collaboration

Jul, 2012

21 pages

Published in:

Phys.Rev.D 86 (2012) 052004

e-Print:

1207.5646 [hep-ex]

DOI:

10.1103/PhysRevD.86.052004

PDG:

{{\mathit \chi}_{{{c1}}}{(1P)}}

\rightarrow

{{\mathit \Lambda}}{{\overline{\mathit \Lambda}}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}

Experiments:

BEPC-BES-III

View in:

reference search11 citations

Citations per year

Abstract: (arXiv)

Decays of the chi_{cJ} states (J=0,\ 1,\ 2) to \Lambda \Lambda bar\ pi^{+} \pi^{-}, including processes with intermediate \Sigma(1385), are studied through the E1 transition psi'-->\gamma chi_{cJ} using 106 million psi' events collected with the BESIII detector at BEPCII. This is the first observation of chi_{cJ} decays to the final state \Lambda\Lambda bar \pi^{+}\pi^{-}. The branching ratio of the intermediate process chi_{cJ}-->\Sigma(1385)^{+/-} \bar{\Sigma}(1385)^{-/+} is also measured for the first time, and the results agree with the theoretical predictions based on the color-octet effect.

13.25.Gv
13.30.Eg
14.20.Pt
chi mesons: hadronic decay
Sigma(1385): intermediate state
chi mesons: branching ratio: measured
BES
electron positron: annihilation
psi(3685): radiative decay
chi/c0(3415)

References(11)

Figures(1)

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