$S$-wave resonance contributions to the $B^0_{(s)}\to \eta_c{(2S)}\pi^+\pi^-$ in the perturbative QCD factorization approach - INSPIRE

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$S$ -wave resonance contributions to the $B^0_{(s)}\to \eta_c{(2S)}\pi^+\pi^-$ in the perturbative QCD factorization approach

Jan 7, 2017

6 pages

Published in:

Chin.Phys.C 41 (2017) 8, 083105

Published: Aug 8, 2017

e-Print:

1701.01844 [hep-ph]

DOI:

10.1088/1674-1137/41/8/083105

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Abstract: (IOP)

By employing the perturbative QCD (PQCD) factorization approach, we study the quasi-two-body decays, where the pion pair comes from the S-wave resonance f (0)(X). The Breit–Wigner formula for the f (0)(500) and f (0)(1500) resonances and the Flatté model for the f (0)(980) resonance are adopted to parameterize the time-like scalar form factors in the two-pion distribution amplitudes. As a comparison, Bugg's model is also used for the wide f (0)(500) in this work. For decay rates, we found the following PQCD predictions: (a) when the contributions from f (0)(980) and f (0)(1500) are all taken into account, (b) in the Breit-Wigner model and in Bugg's model.

Note:

7 pages, 3 figures, Some modifications. Final version to be published in Chinese Physics C

13.25.Hw
13.20.He
13.30.Eg
PQCD factorization approach
two-pion distribution amplitudes
quasi-two-body decay
B/s0: hadronic decay
B/s0: branching ratio
final state: two-pion
pi: pair production

References(71)

Figures(3)

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