Observation of b ---> d gamma and determination of |V(td)/V(ts)| - INSPIRE

DataBETA

Observation of b ---> d gamma and determination of |V(td)/V(ts)|

Belle

Collaboration

Jun, 2005

7 pages

Part of Proceedings, 2005 Europhysics Conference on High Energy Physics (EPS-HEP 2005) : Lisbon, Portugal, July 21-27, 2005

Published in:

Phys.Rev.Lett. 96 (2006) 221601

Contribution to:

- EPS-HEP 2005

e-Print:

hep-ex/0506079 [hep-ex]

DOI:

10.1103/PhysRevLett.96.221601

PDG:

{{\mathit B}^{+}}

\rightarrow

{{\mathit \rho}^{+}}{{\mathit \gamma}}

Report number:

BELLE-CONF-0520,
LP2005-155,
EPS05-492

Experiments:

KEK-BF-BELLE

View in:

ADS Abstract Service

reference search115 citations

Citations per year

Abstract:

We report the observation of the flavor-changing neutral current process b --> d gamma using a sample of 386*10^6 B meson pairs accumulated by the Belle detector at the KEKB e+ e- collider. We measure branching fractions for the exclusive modes B- --> rho- gamma, B0bar --> rho0 gammaand B0bar --> omega gamma. Assuming that these three modes are related by isospin, we find Br(B --> (rho,omega) gamma) = (1.32 +0.34-0.31(stat.) +0.10-0.09(syst.)) * 10^-6 with a significance of 5.1 sigma. This result is used to determine the ratio of CKM matrix elements |V_td/V_ts| to be 0.199 +0.026-0.025(exp.) +0.018-0.015(theo.).

Note:

5 pages, 2 figures, submitted to Physical Review Letters Report-no: KEK Preprint 2005-101, Belle Preprint 2006-5 Journal-ref: Phys.Rev.Lett.96, 221601 (2006)

13.20.He
14.40.Nd
12.15.Hh
12.15.Mm

References(21)

Figures(0)

CP Violation in the Renormalizable Theory of Weak Interaction

Makoto Kobayashi
(
- Kyoto U.
)
,
Toshihide Maskawa
(
- Kyoto U.
)

- Prog.Theor.Phys. 49 (1973) 652-657,
- Also in *Lichtenberg, D. B. (Ed.), Rosen, S. P. (Ed.): Developments In The Quark Theory Of Hadrons, Vol. 1*, 218-223.
•
DOI:
- 10.1143/PTP.49.652

Unitary Symmetry and Leptonic Decays

Nicola Cabibbo
(
- CERN
)

- Phys.Rev.Lett. 10 (1963) 531-533,
- Also in *Bologna 1984, Proceedings, Fifty years of weak-interaction physics* 648-649
•
DOI:
- 10.1103/PhysRevLett.10.531

Search for the b ---> d gamma process

Belle

Collaboration

•

D. Mohapatra
(
- Virginia Tech.
)

et al.

- Phys.Rev.D 72 (2005) 011101
•
e-Print:
- hep-ex/0505097
•
DOI:
- 10.1103/PhysRevD.72.011101

Search for the radiative penguin decays $B^+ \to \rho^+ \gamma$ , $B^0 \to \rho^0 \gamma$ , and $B^0 \to \omega \gamma$

BaBar

Collaboration

•

Bernard Aubert
(
- Annecy, LAPP
)

et al.

- Phys.Rev.Lett. 94 (2005) 011801
•
e-Print:
- hep-ex/0408034
•
DOI:
- 10.1103/PhysRevLett.94.011801

Branching ratios for B ---> K* gamma and B ---> rho gamma decays in next-to-leading order in the large energy effective theory

Ahmed Ali
(
- DESY
)
,
A.Y. Parkhomenko
(
- Yaroslavl State U.
)

- Eur.Phys.J.C 23 (2002) 89-112
•
e-Print:
- hep-ph/0105302
•
DOI:
- 10.1007/s100520100856

CP asymmetry, branching ratios and isospin breaking effects in B ---> rho gamma and B ---> omega gamma decays with the pQCD approach

Cai-Dian Lu
(
- CCAST World Lab, Beijing and
- Beijing, Inst. High Energy Phys.
)
,
M. Matsumori
(
- Nagoya U.
)
,
A.I. Sanda
(
- Nagoya U.
)
,
Mao-Zhi Yang
(
- CCAST World Lab, Beijing and
- Beijing, Inst. High Energy Phys.
)

- Phys.Rev.D 72 (2005) 094005,
- Phys.Rev.D 73 (2006) 039902 (erratum)
•
e-Print:
- hep-ph/0508300
•
DOI:
- 10.1103/PhysRevD.72.094005

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

A New estimate of B ---> (rho, omega) + gamma in the light cone QCD sum rule

- J.Phys.G 25 (1999) 1179-1185
•
e-Print:
- hep-ph/9911308
•
DOI:
- 10.1088/0954-3899/25/6/308

General lower bounds for B ---> D penguin processes

Robert Fleischer
(
- CERN
)
,
Stefan Recksiegel
(
- Munich, Tech. U.
)

- Phys.Rev.D 71 (2005) 051501
•
e-Print:
- hep-ph/0409137
•
DOI:
- 10.1103/PhysRevD.71.051501

Exclusive radiative and electroweak $b \to d$ and $b \to s$ penguin decays at NLO

M. Beneke
(
- Aachen, Tech. Hochsch.
)
,
Th. Feldmann
(
- Siegen U.
)
,
D. Seidel
(
- Aachen, Tech. Hochsch.
)

- Eur.Phys.J.C 41 (2005) 173-188
•
e-Print:
- hep-ph/0412400
•
DOI:
- 10.1140/epjc/s2005-02181-5

Overview of the KEKB accelerators

S. Kurokawa
(
- KEK, Tsukuba
)
,
Eiji Kikutani
(
- KEK, Tsukuba
)

- Nucl.Instrum.Meth.A 499 (2003) 1-7
•
DOI:
- 10.1016/S0168-9002(02)01771-0

The Belle Detector

Belle

Collaboration

•

A. Abashian

et al.

- Nucl.Instrum.Meth.A 479 (2002) 117-232
•
DOI:
- 10.1016/S0168-9002(01)02013-7

The use of multiple measurements in taxonomic problems

Ronald Aylmer Fisher

- Annals Eugen. 7 (1936) 179-188
•
DOI:
- 10.1111/j.1469-1809.1936.tb02137.x

Evidence for $B^0 \to \pi^0 \pi^0$

Belle

Collaboration

•

S.H. Lee
(
- DMRC, Seoul
)

et al.

- Phys.Rev.Lett. 91 (2003) 261801
•
e-Print:
- hep-ex/0308040
•
DOI:
- 10.1103/PhysRevLett.91.261801

Observables for the Analysis of Event Shapes in e+ e- Annihilation and Other Processes

Geoffrey C. Fox
(
- Caltech
)
,
Stephen Wolfram
(
- Caltech
)

- Phys.Rev.Lett. 41 (1978) 1581
•
DOI:
- 10.1103/PhysRevLett.41.1581

Neutral B flavor tagging for the measurement of mixing induced CP violation at Belle

Belle

Collaboration

•

H. Kakuno
(
- Tokyo Inst. Tech.
)

et al.

- Nucl.Instrum.Meth.A 533 (2004) 516-531
•
e-Print:
- hep-ex/0403022
•
DOI:
- 10.1016/j.nima.2004.06.159

Charmonium Spectroscopy from Inclusive psi-prime and J/psi Radiative Decays

et al.

- Phys.Rev.D 34 (1986) 711
•
DOI:
- 10.1103/PhysRevD.34.711

Search for Hadronic $b \to u$ Decays

ARGUS

Collaboration

•

H. Albrecht
(
- DESY
)

et al.

- Phys.Lett.B 241 (1990) 278-282
•
DOI:
- 10.1016/0370-2693(90)91293-K

Exclusive radiative B decays in the light cone QCD sum rule approach

Ahmed Ali
(
- CERN
)
,
Vladimir M. Braun
(
- Munich, Max Planck Inst.
)
,
H. Simma
(
- DESY
)

- Z.Phys.C 63 (1994) 437-454
•
e-Print:
- hep-ph/9401277
•
DOI:
- 10.1007/BF01580324

Implication of the B ---> (rho, omega) gamma branching ratios for the CKM phenomenology

- Phys.Lett.B 595 (2004) 323-338
•
e-Print:
- hep-ph/0405075
•
DOI:
- 10.1016/j.physletb.2004.06.039

Review of particle physics. Particle Data Group

S. Eidelman
(
- Novosibirsk, IYF
)
,
K.G. Hayes
(
- Hillsdale Coll.
)
,
K.A. Olive
(
- Minnesota U.
)
,
M. Aguilar-Benitez
(
- Madrid, CIEMAT
)
,
Claude Amsler
(
- Zurich U.
)

et al.

- Phys.Lett.B 592 (2004) 1-4, 1
•
DOI:
- 10.1016/j.physletb.2004.06.001