Charmless non-leptonic $B_s$ decays to $PP$, $PV$ and $VV$ final states in the pQCD approach - INSPIRE

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Charmless non-leptonic $B_s$ decays to $PP$ , $PV$ and $VV$ final states in the pQCD approach

Mar, 2007

66 pages

Published in:

Phys.Rev.D 76 (2007) 074018

e-Print:

hep-ph/0703162 [hep-ph]

DOI:

10.1103/PhysRevD.76.074018

Report number:

DESY-07-021

View in:

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Abstract:

We calculate the CP-averaged branching ratios and CP-violating asymmetries of a number of two-body charmless hadronic decays

\bar{B_s^0} \to PP, PV, VV

in the perturbative QCD (pQCD) approach to leading order in

\alpha_s

(here

P

and

V

denote light pseudoscalar and vector mesons, respectively). The mixing-induced CP violation parameters are also calculated for these decays. We also predict the polarization fractions of

B_s \to VV

decays and find that the transverse polarizations are enhanced in some penguin dominated decays such as

\bar{B_s^0} \to K ^{*}\bar{K^{*}}

,

K ^{*}\rho

. Some of the predictions worked out here can already be confronted with the recently available data from the CDF collaboration on the branching ratios for the decays

\bar{B_s^0} \to K^+\pi^-

,

\bar{B_s^0} \to K^+K^-

and the CP-asymmetry in the decay

\bar{B_s^0} \to K^+\pi^-

, and are found to be in agreement within the current errors. A large number of predictions for the branching ratios, CP-asymmetries and vector-meson polarizations in

\bar{B_s^0}

decays, presented in this paper and compared with the already existing results in other theoretical frameworks, will be put to stringent experimental tests in forthcoming experiments at Fermilab, LHC and Super B-factories.

13.20.He
13.30.Eg
13.25.Hw
B/s0: hadronic decay
final state: (0charm)
final state: two-particle
pseudoscalar meson
vector meson: polarization
decay: amplitude analysis
quantum chromodynamics: perturbation theory

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