Inclusive semileptonic B decays and the determination of |V(ub)| - INSPIRE

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Inclusive semileptonic B decays and the determination of |V(ub)|

P. Gambino
(
- Turin U. and
- INFN, Turin
)
,
P. Giordano
(
- Turin U. and
- INFN, Turin
)
,
G. Ossola
(
- Democritos Nucl. Res. Ctr.
)
,
N. Uraltsev
(
- St. Petersburg, INP and
- Notre Dame U.
)

Jul, 2007

35 pages

Published in:

JHEP 10 (2007) 058

e-Print:

0707.2493 [hep-ph]

DOI:

10.1088/1126-6708/2007/10/058

Report number:

DFTT-14-2007,
UND-HEP-07-BIG-06

View in:

ADS Abstract Service

reference search182 citations

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Abstract: (arXiv)

We study the triple differential distribution of B-> Xu l nu, consistently including all perturbative and non-perturbative effects through O(alphas^2 beta_0) and O(1/mb^3). The Fermi motion is parameterized in terms of a single light-cone function for each structure function and for any value of q^2, accounting for all subleading effects. We discuss the problems and uncertainties related to the high-q^2 tail and to Weak Annihilation effects. We work in the kinetic scheme, a framework characterized by a Wilsonian treatment with a hard cutoff mu ~ 1GeV. Our method is illustrated with the extraction of |V_ub| from some of the latest experimental data, providing a detailed estimate of the theoretical uncertainty.

B: semileptonic decay
decay: inclusive reaction
up
CKM matrix matrix
B: width
differential cross section
gluon: emission
perturbation theory
nonperturbative
operator product expansion

References(45)

Figures(0)

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)
,
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(
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)
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)

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(
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)
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(
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)

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(
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)
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(
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)

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•
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(
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)
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(
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)

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(
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)

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(
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)
,
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(
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)
,
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(
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)

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V. Aquila
(
- Munich U.
)
,
P. Gambino
(
- INFN, Turin and
- Turin U.
)
,
G. Ridolfi
(
- INFN, Genoa and
- Genoa U.
)
,
N. Uraltsev
(
- INFN, Milan and
- Notre Dame U.
)

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(
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)
,
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(
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)

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•
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(
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)
,
Giancarlo Ferrera
(
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)
,
Giulia Ricciardi
(
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)

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•
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Adam K. Leibovich
(
- Carnegie Mellon U.
)
,
Ian Low
(
- Carnegie Mellon U. and
- Santa Barbara, KITP
)
,
I.Z. Rothstein
(
- Carnegie Mellon U. and
- Caltech
)

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•
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•
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Imprecated, yet impeccable: On the theoretical evaluation of Gamma(B ---> X(c) l nu)

D Benson
(
- Notre Dame U. and
- Karlsruhe U., TTP
)
,
I.I. Bigi
(
- Notre Dame U. and
- Karlsruhe U., TTP
)
,
T. Mannel
(
- Karlsruhe U., TTP
)
,
N. Uraltsev
(
- INFN, Milan
)

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•
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•
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