Inclusive beauty decays and the spectator model

Altarelli, Guido; Petrarca, S.

doi:10.1016/0370-2693(91)90332-K

Inclusive beauty decays and the spectator model

Guido Altarelli
(
- CERN
)
,
S. Petrarca
(
- Rome U.
)

Feb, 1991

8 pages

Published in:

Phys.Lett.B 261 (1991) 303-310

Published: 1991

DOI:

10.1016/0370-2693(91)90332-K

Report number:

CERN-TH-6017-91,
ROME-790-1991

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Abstract: (Elsevier)

A complete updated analysis of the branching ratios of inclusive b decays in a pure parton picture with inert spectator light quark(s) is presented. In view of recent data that indicate a rather small value for the average semileptonic decay fraction. particular attention is devoted to evaluating the central value and the range of theoretical errors for this quantity. We find that, while the data are marginally consistent with the spectator model, there are perhaps indications for a moderate non-spectator contribution. We discuss possible terms of this kind and argue that the ratio τ − τ 0 should probably be around its present upper limit.

bottom: semileptonic decay
semileptonic decay: bottom
bottom: nonleptonic decay
nonleptonic decay: bottom
bottom: branching ratio
model: spectator
B: semileptonic decay
semileptonic decay: B
model: parton
quantum chromodynamics: correction

References(39)

Figures(0)

Strong - weak coupling duality and nonperturbative effects in string theory

- Phys.Lett.B 249 (1990) 35-43
•
DOI:
- 10.1016/0370-2693(90)90523-9

The Electron Spectrum From $B$ Meson Decays

Crystal Ball

Collaboration

•

K. Wachs
(
- DESY
)

et al.

- Z.Phys.C 42 (1989) 33
•
DOI:
- 10.1007/BF01565126

Leptonic Decay of Heavy Flavors: A Theoretical Update

Guido Altarelli
(
- Rome U. and
- INFN, Rome
)
,
N. Cabibbo
(
- Rome U. and
- INFN, Rome
)
,
G. Corbo
(
- Rome U. and
- INFN, Rome
)
,
L. Maiani
(
- Rome U. and
- INFN, Rome
)
,
G. Martinelli
(
- Frascati
)

- Nucl.Phys.B 208 (1982) 365-380
•
DOI:
- 10.1016/0550-3213(82)90226-7

Review of particle properties. Particle Data Group

J.J. Hernandez
(
- Valencia U. and
- CERN and
- Madrid, CIEMAT
)
,
L. Montanet
(
- Valencia U. and
- CERN and
- Madrid, CIEMAT
)
,
K. Gieselmann
(
- Valencia U. and
- CERN and
- Madrid, CIEMAT
)
,
M. Aguilar-Benitez
(
- Valencia U. and
- CERN and
- Madrid, CIEMAT
)
,
J. Stone
(
- Boston U.
)

et al.

- Phys.Lett.B 239 (1990) 1-515,
- Phys.Lett.B 253 (1991) 524-527 (erratum)
•
DOI:
- 10.1016/0370-2693(91)91762-K

Mass Effects in Weak Decays of Heavy Particles

- Phys.Rev.D 25 (1982) 188
•
DOI:
- 10.1103/PhysRevD.25.188

- Phys.Lett.B 98 111

On the Decay of $D^+$ Meson

Tsunehiro Kobayashi
(
- Tsukuba U.
)
,
Nobuo Yamazaki
(
- Tsukuba U.
)

- Prog.Theor.Phys. 65 (1981) 775-778
•
DOI:
- 10.1143/PTP.65.775

- Sov.J.Nucl.Phys. 41 1

A Mechanism for the Difference in Lifetimes of Charged and Neutral D Mesons

- Phys.Rev.Lett. 44 (1980) 7,
- Phys.Rev.Lett. 44 (1980) 962 (erratum)
•
DOI:
- 10.1103/PhysRevLett.44.7

- Phys.Rev.Lett. 44 462

The Puzzle of Nonleptonic Decays and Its Resolution

Harald Fritzsch
(
- Bern U.
)
,
Peter Minkowski
(
- Bern U.
)

- Phys.Lett.B 90 (1980) 455-459
•
DOI:
- 10.1016/0370-2693(80)90973-9

Tests of the Quark Annihilation Hypothesis for $D$ and F Decays

Harald Fritzsch
(
- Bern U.
)
,
Peter Minkowski
(
- Bern U.
)

- Nucl.Phys.B 171 (1980) 413-419
•
DOI:
- 10.1016/0550-3213(80)90378-8

The Lifetime of Charmed Particles

N. Cabibbo
(
- Paris U., VI-VII
)
,
L. Maiani
(
- Ecole Normale Superieure
)

- Phys.Lett.B 79 (1978) 109-111,
- Also in *BOLOGNA 1984, PROCEEDINGS, FIFTY YEARS OF WEAK-INTERACTION PHYSICS* 744-746
•
DOI:
- 10.1016/0370-2693(78)90446-X