Study of semileptonic decays B+- ---> eta(prime) l nu

Kim, C.S.; Yang, Ya-Dong

doi:10.1103/PhysRevD.65.017501

Study of semileptonic decays B+- ---> eta(prime) l nu

C.S. Kim
(
- Yonsei U.
)
,
Ya-Dong Yang
(
- Technion
)

Jul, 2001

9 pages

Published in:

Phys.Rev.D 65 (2002) 017501

e-Print:

hep-ph/0107226 [hep-ph]

DOI:

10.1103/PhysRevD.65.017501

View in:

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Abstract:

We study semileptonic decays

B^\pm \to \eta^{(\prime)} l \nu

, which are suggested to be used to extract the hadronic form factors of

B

meson decays to

\eta(\eta^{\prime})

and the angle of

\eta-\eta^{\prime}

mixing. This would be of great benefit to theoretical studies of

B

nonleptonic decays involving

\eta

and

\eta^{\prime}

, and could lead to a reliable and complementary determination of

V_{ub}

. The branching ratios are estimated to be

{\cal B}(B^\pm \to\eta^{(\prime)} l \nu)=4.32 \pm 0.83 (2.10 \pm 0.40) \times 10^{-5}

, which could be extensively studied experimentally at

BaBar

and Belle.

13.20.He
12.15.Hh
B: semileptonic decay
eta(958)
pseudoscalar meson: mixing angle
form factor: hadronic
B: branching ratio
electron: energy spectrum
mass spectrum: dilepton
numerical calculations

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