P-wave Quarkonium Decays to Meson Pair - INSPIRE

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P-wave Quarkonium Decays to Meson Pair

Long-Bin Chen
(
- Beijing, GUCAS
)
,
Cong-Feng Qiao
(
- Beijing, GUCAS
)

Apr, 2012

23 pages

Published in:

JHEP 11 (2012) 168

e-Print:

1204.0215 [hep-ph]

DOI:

10.1007/JHEP11(2012)168

View in:

ADS Abstract Service

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Abstract: (arXiv)

The processes of P-wave Quarkonium exclusive decays to two mesons are investigated, in which the final state vector mesons with various polarizations are considered separately. In the calculation, the initial heavy quarkonia are treated in the framework of non-relativistic quantum chromodynamics, whereas for light mesons, the light cone distribution amplitudes up to twist-3 are employed. It turns out that the higher twist contribution is significant and provides a possible explanation for the observation of the hadron helicity selection rule violated processes

\chi_{c1}\rightarrow \phi\phi,\omega\omega

by the BESIII collaboration in recently. We also evaluate the

\chi_{b1}\to J/\psi J/\psi

process and find that its branching ratio is big enough to be measured at the B-factories.

Note:

more results and discussions added

13.25.Gv
12.38.Bx
quarkonium: decay
BES
quantum chromodynamics: nonrelativistic
meson: final state
B-factory
higher-twist

References(41)

Figures(1)

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