Isospin breaking in $B \to K^* \gamma$ decays - INSPIRE

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Isospin breaking in $B \to K^* \gamma$ decays

Alexander L. Kagan
(
- Cincinnati U.
)
,
Matthias Neubert
(
- Cornell U., LNS
)

Oct, 2001

4 pages

Published in:

Phys.Lett.B 539 (2002) 227-234

e-Print:

hep-ph/0110078 [hep-ph]

DOI:

10.1016/S0370-2693(02)02100-7

Report number:

CLNS-01-1756

View in:

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Abstract: (Elsevier)

A calculation of the leading isospin-breaking contributions to the B→K ∗ γ decay amplitudes based on the QCD factorization approach is presented. They arise at order Λ / m b in the heavy-quark expansion and are due to annihilation contributions from 4-quark operators, the chromo-magnetic dipole operator, and charm penguins. In the Standard Model the decay rate for B 0 → K ∗0 γ is predicted to be about 10–20% larger than that for B − →K ∗− γ . Isospin-breaking effects are a sensitive probe of the penguin sector of the effective weak Hamiltonian. New Physics models in which the hierarchy of B→K ∗ γ decay rates is either flipped or greatly enhanced could be ruled out with more precise data.

Note:

11 pages, 2 figures. Extended version to appear in Physics Letters B. Includes an additional section with a discussion of New Physics effects

B: radiative decay
K*(892)
amplitude analysis
isospin: violation
quantum chromodynamics: factorization
Feynman graph: penguin
anti-B0: branching ratio
B-: branching ratio
numerical calculations
B --> K*(892) photon

References(21)

Figures(0)

The Radiative decays $B \to V \gamma$ at next-to-leading order in QCD

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

- Nucl.Phys.B 621 (2002) 459-478
•
e-Print:
- hep-ph/0106081
•
DOI:
- 10.1016/S0550-3213(01)00580-6

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.
)

- Nucl.Phys.B 612 (2001) 25-58
•
e-Print:
- hep-ph/0106067
•
DOI:
- 10.1016/S0550-3213(01)00366-2

QCD factorization for B ---> pi pi decays: Strong phases and CP violation in the heavy quark limit

M. Beneke
(
- CERN
)
,
G. Buchalla
(
- CERN
)
,
M. Neubert
(
- SLAC
)
,
Christopher T. Sachrajda
(
- Southampton U.
)

- Phys.Rev.Lett. 83 (1999) 1914-1917
•
e-Print:
- hep-ph/9905312
•
DOI:
- 10.1103/PhysRevLett.83.1914

QCD factorization for exclusive, nonleptonic B meson decays: General arguments and the case of heavy light final states

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

- Nucl.Phys.B 591 (2000) 313-418
•
e-Print:
- hep-ph/0006124
•
DOI:
- 10.1016/S0550-3213(00)00559-9

QCD factorization in B ---> pi K, pi pi decays and extraction of Wolfenstein parameters

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

- Nucl.Phys.B 606 (2001) 245-321
•
e-Print:
- hep-ph/0104110
•
DOI:
- 10.1016/S0550-3213(01)00251-6

Study of exclusive radiative B meson decays

CLEO

Collaboration

•

T.E. Coan
(
- Southern Methodist U.
)

et al.

- Phys.Rev.Lett. 84 (2000) 5283-5287
•
e-Print:
- hep-ex/9912057
•
DOI:
- 10.1103/PhysRevLett.84.5283

Radiative B meson decay

Belle

Collaboration

•

Yutaka Ushiroda
(
- Kyoto U.
)

for the collaboration.

Measurement of $B \to K^* \gamma$ branching fractions and charge asymmetries

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.Lett. 88 (2002) 101805
•
e-Print:
- hep-ex/0110065
•
DOI:
- 10.1103/PhysRevLett.88.101805

Exclusive semileptonic and rare B meson decays in QCD

Patricia Ball
(
- CERN
)
,
Vladimir M. Braun
(
- Nordita
)

- Phys.Rev.D 58 (1998) 094016
•
e-Print:
- hep-ph/9805422
•
DOI:
- 10.1103/PhysRevD.58.094016

Higher twist distribution amplitudes of vector mesons in QCD: Formalism and twist - three distributions

- Nucl.Phys.B 529 (1998) 323-382
•
e-Print:
- hep-ph/9802299
•
DOI:
- 10.1016/S0550-3213(98)00356-3

Symmetry breaking corrections to heavy to light B meson form-factors at large recoil

- Nucl.Phys.B 592 (2001) 3-34
•
e-Print:
- hep-ph/0008255
•
DOI:
- 10.1016/S0550-3213(00)00585-X

Asymptotics of heavy meson form-factors

A.G. Grozin
(
- Novosibirsk, IYF
)
,
M. Neubert
(
- CERN
)

- Phys.Rev.D 55 (1997) 272-290
•
e-Print:
- hep-ph/9607366
•
DOI:
- 10.1103/PhysRevD.55.272

Heavy light meson decay constant from QCD sum rules in three loop approximation

- Phys.Rev.D 65 (2002) 054006
•
e-Print:
- hep-ph/0108110
•
DOI:
- 10.1103/PhysRevD.65.054006

f(B) and f(B(s)) from QCD sum rules

Matthias Jamin
(
- Heidelberg U.
)
,
Bjorn O. Lange
(
- Heidelberg U.
)

- Phys.Rev.D 65 (2002) 056005
•
e-Print:
- hep-ph/0108135
•
DOI:
- 10.1103/PhysRevD.65.056005

Lattice constrained parametrizations of form-factors for semileptonic and rare radiative B decays

UKQCD

Collaboration

•

Luigi Del Debbio
(
- Marseille, CPT
)

et al.

- Phys.Lett.B 416 (1998) 392-401
•
e-Print:
- hep-lat/9708008
•
DOI:
- 10.1016/S0370-2693(97)01350-6

B ---> X(s gamma) in supersymmetry: Large contributions beyond the leading order

G. Degrassi
(
- Padua U. and
- INFN, Padua
)
,
P. Gambino
(
- CERN
)
,
G.F. Giudice
(
- CERN
)

- JHEP 12 (2000) 009
•
e-Print:
- hep-ph/0009337
•
DOI:
- 10.1088/1126-6708/2000/12/009

$b \to s \gamma$ and supersymmetry with large $\tan\beta$

Marcela Carena
(
- Fermilab and
- UC, Santa Cruz
)
,
David Garcia
(
- CERN
)
,
Ulrich Nierste
(
- Fermilab
)
,
Carlos E.M. Wagner
(
- Argonne and
- Chicago U., EFI and
- UC, Santa Cruz
)

- Phys.Lett.B 499 (2001) 141-146
•
e-Print:
- hep-ph/0010003
•
DOI:
- 10.1016/S0370-2693(01)00009-0

B ---> X(s) gamma in supersymmetry with explicit CP violation

- Phys.Rev.D 65 (2002) 034007
•
e-Print:
- hep-ph/0107329
•
DOI:
- 10.1103/PhysRevD.65.034007

Dipole coefficients in B ---> X(s) gamma in supersymmetry with large tan beta and explicit CP violation

Muge Boz
(
- Hacettepe U.
)
,
Namik K. Pak
(
- Middle East Tech. U., Ankara
)

- Phys.Lett.B 531 (2002) 119-126
•
e-Print:
- hep-ph/0201199
•
DOI:
- 10.1016/S0370-2693(02)01348-5

Trojan penguins and isospin violation in hadronic B decays

- JHEP 10 (1999) 029
•
e-Print:
- hep-ph/9909297
•
DOI:
- 10.1088/1126-6708/1999/10/029

Gluino contribution to radiative B decays: Organization of QCD corrections and leading order results

Francesca Borzumati
(
- CERN and
- SISSA, Trieste
)
,
Christoph Greub
(
- Bern U.
)
,
Tobias Hurth
(
- CERN and
- Munich, Max Planck Inst.
)
,
Daniel Wyler
(
- Zurich, ETH
)

- Phys.Rev.D 62 (2000) 075005
•
e-Print:
- hep-ph/9911245
•
DOI:
- 10.1103/PhysRevD.62.075005