Bounds on the CP asymmetry in $b \to s \gamma$ decays - INSPIRE

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Bounds on the CP asymmetry in $b \to s \gamma$ decays

CLEO

Collaboration

•

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

Oct, 2000

11 pages

Published in:

Phys.Rev.Lett. 86 (2001) 5661-5665

e-Print:

hep-ex/0010075 [hep-ex]

DOI:

10.1103/PhysRevLett.86.5661

PDG:

\mathit A_{CP}({{\mathit B}}

\rightarrow

{{\mathit \gamma}}

Report number:

SLAC-REPRINT-2000-078,
CLNS-00-1697,
CLEO-00-21

Experiments:

CESR-CLEO,
CESR-CLEO-II

View in:

reference search98 citations

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Abstract: (arXiv)

We have measured the CP asymmetry A_CP = [BF(b -> s gamma) - BF(bbar -> sbar gamma)]/ [BF(b -> s gamma) + BF(bbar -> sbar gamma)] to be A_CP = (-0.079 +/- 0.108 +/- 0.022)(1.0 +/- 0.030), implying that, at 90% confidence level, A_CP lies between -0.27 and +0.10. These limits rule out some extreme non-Standard Model predictions, but are consistent with most, as well as with the Standard Model.

electron positron: colliding beams
electron positron: annihilation
Upsilon(10570): electroproduction
B: pair production
bottom
quark: radiative decay
antiquark: radiative decay
asymmetry: CP
electroweak interaction: validity test
CLEO

References(9)

Figures(0)

Direct CP violation in $B \to X_s \gamma$ decays as a signature of new physics

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

- Phys.Rev.D 58 (1998) 094012
•
e-Print:
- hep-ph/9803368
•
DOI:
- 10.1103/PhysRevD.58.094012

Decay rate asymmetry in B ---> X(s) gamma as a signature of supersymmetry

- Phys.Rev.D 60 (1999) 035004
•
e-Print:
- hep-ph/9811251
•
DOI:
- 10.1103/PhysRevD.60.035004

The CLEO-II detector

CLEO

Collaboration

•

Y. Kubota
(
- Minnesota U.
)

et al.

- Nucl.Instrum.Meth.A 320 (1992) 66-113
•
DOI:
- 10.1016/0168-9002(92)90770-5

The CLEO-II silicon vertex detector

T.S. Hill
(
- Santa Barbara, KITP
)

- Nucl.Instrum.Meth.A 418 (1998) 32-39
•
DOI:
- 10.1016/S0168-9002(98)00714-1

First measurement of the rate for the inclusive radiative penguin decay $b \to s \gamma$

CLEO

Collaboration

•

M.S. Alam
(
- SUNY, Albany
)

et al.

- Phys.Rev.Lett. 74 (1995) 2885-2889
•
DOI:
- 10.1103/PhysRevLett.74.2885

A Profile of the final states in B ---> X(s) gamma and an estimate of the branching ratio BR (B ---> K* gamma)

Ahmed Ali
(
- DESY
)
,
C. Greub
(
- DESY
)

- Phys.Lett.B 259 (1991) 182-190
•
DOI:
- 10.1016/0370-2693(91)90156-K

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

Two measurements of B0 anti-B0 mixing

CLEO

Collaboration

•

John E. Bartelt
(
- Vanderbilt U.
)

et al.

- Phys.Rev.Lett. 71 (1993) 1680-1684,
- Phys. Rev. Lett. 71 (1993) 1680-1684 and Cornell Univ. Ithaca - CLNS-93-1207 (93/04,rec.May) 9 p
•
DOI:
- 10.1103/PhysRevLett.71.1680

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