Systematic approach to exclusive $B \to V l^+ l^-$, $V \gamma$ decays - INSPIRE

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Systematic approach to exclusive $B \to V l^+ l^-$ , $V \gamma$ decays

M. Beneke
(
- Aachen, Tech. Hochsch.
)
,
T. Feldmann
(
- Aachen, Tech. Hochsch.
)
,
D. Seidel
(
- Aachen, Tech. Hochsch.
)

Jun, 2001

34 pages

Published in:

Nucl.Phys.B 612 (2001) 25-58

e-Print:

hep-ph/0106067 [hep-ph]

DOI:

10.1016/S0550-3213(01)00366-2

Report number:

PITHA-01-05

View in:

ADS Abstract Service

reference search740 citations

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Abstract:

We show -- by explicit computation of first-order corrections -- that the QCD factorization approach previously applied to hadronic two-body decays and to form factor ratios also allows us to compute non-factorizable corrections to exclusive, radiative B meson decays in the heavy quark mass limit. This removes a major part of the theoretical uncertainty in the region of small invariant mass of the photon. We discuss in particular the decays B\to K^* \gamma and B\to K^* l^+l^- and complete the calculation of corrections to the forward-backward asymmetry zero. The new correction shifts the asymmetry zero by 30%, but the result confirms our previous conclusion that the asymmetry zero provides a clean phenomenological determination of the Wilson coefficient C_9.

Note:

34 pages, LaTeX; (v2): reference added, typo in Eq. (93) corrected, Eq. (47) + conventions in Table 1 corrected Report-no: PITHA 01/05

13.25.Hw
12.38.Bx
12.15.-y
B: radiative decay
B: semileptonic decay
K*(892)
quantum chromodynamics: factorization
correction
Feynman graph: higher-order
decay: form factor

References(30)

Figures(0)

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)
,
Mikolaj Misiak
(
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)
,
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)

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Patricia Ball
(
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,
Vladimir M. Braun
(
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)

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(
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)
,
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(
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)

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CLEO

Collaboration

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)

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M. Beneke
(
- Aachen, Tech. Hochsch.
)
,
G. Buchalla
(
- CERN
)
,
M. Neubert
(
- Cornell U., LNS
)
,
Christopher T. Sachrajda
(
- Southampton U.
)

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Stefan W. Bosch
(
- CERN and
- Munich, Max Planck Inst.
)
,
Gerhard Buchalla
(
- CERN
)

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•
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