The $B(B_{s})\rightarrow D_{(s)}(\bar{D}_{(s)}) T$ and $D_{(s)}^{*}(\bar{D}_{(s)}^{*})T$ Decays in Perturbative QCD Approach - INSPIRE

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The $B(B_{s})\rightarrow D_{(s)}(\bar{D}_{(s)}) T$ and $D_{(s)}^{}(\bar{D}_{(s)}^{})T$ Decays in Perturbative QCD Approach

Zhi-Tian Zou
(
- Beijing, Inst. High Energy Phys. and
- TPCSF, Beijing
)
,
Xin Yu
(
- Beijing, Inst. High Energy Phys. and
- TPCSF, Beijing
)
,
Cai-Dian Lu
(
- Beijing, Inst. High Energy Phys. and
- TPCSF, Beijing
)

May, 2012

30 pages

Published in:

Phys.Rev.D 86 (2012) 094001

e-Print:

1205.2971 [hep-ph]

DOI:

10.1103/PhysRevD.86.094001

View in:

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Abstract: (arXiv)

In perturbative QCD approach, we investigate the

B(B_{s})\rightarrow D_{(s)}(\bar{D}_{(s)})\,T

and

D_{(s)}^{*}(\bar{D}_{(s)}^{*})\,T

decays, which include the Cabibbo-Kobayashi-Maskawa (CKM) favored decays and the Cabibbo-Kobayashi-Maskawa-suppressed decays, where T denotes a light tensor meson. From our calculation, we find that the nonfactorizable emission diagrams and the annihilation type diagrams are important, especially for those color suppressed channels. For those decays with a tensor meson emitted, the factorizable emission diagrams vanish owing to the fact that a tensor meson can not be produced through the local (V-A) or tensor current. The numerical results show that the predictions for the branching ratios of considered charmed B decays are in the range of

10^{-4}

to

10^{-6}

for those CKM-favored decays (governed by

|V_{cb}|

) and in the range of

10^{-5}

to

10^{-8}

for those CKM-suppressed decays (governed by

|V_{ub}|

). We also predict large transverse polarization contributions in many of the

B(B_{s}) \rightarrow D_{(s)}^{\ast}(\bar{D}_{(s)}^{*})T

decay channels.

Note:

30 pages, 3 figures, typos correctet in Figs. 1 and 2

12.38.Bx
13.25.Hw
quantum chromodynamics: perturbation theory
polarization: transverse
tensor meson
numerical calculations
B: branching ratio
B: hadronic decay
B/s: hadronic decay
D

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Figures(3)

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