Studies of CP violation in B ---> J/psi K* decays - INSPIRE

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Studies of CP violation in B ---> J/psi K* decays

Belle

Collaboration

•

R. Itoh
(
- KEK, Tsukuba
)

Apr, 2005

10 pages

Published in:

Phys.Rev.Lett. 95 (2005) 091601

e-Print:

hep-ex/0504030 [hep-ex]

DOI:

10.1103/PhysRevLett.95.091601

PDG:

\Gamma _{L}/\Gamma

{{\mathit B}^{+}}

\rightarrow

{{\mathit J / \psi}}{{\mathit K}^{*+}}

Report number:

BELLE-PREPRINT-2005-15,
KEK-PREPRINT-2005-7

Experiments:

KEK-BF-BELLE

View in:

ADS Abstract Service

reference search134 citations

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Abstract:

CP violation in

B\to J/\psi K^*

decays is studied using an angular analysis in a data sample of 253 fb

^{-1}

recorded with the Belle detector at the KEKB

e^+e^-

collider. The flavor separated measurements of the decay amplitudes indicate no evidence for direct CP violation. T-odd CP violation is studied using the asymmetries in triple product correlations, and the results are consistent with the Standard Model null predictions. The time-dependent angular analysis gives the following values of CP violating parameters:

\sin 2\phi_1 = 0.24 \pm 0.31 \pm 0.05

and

\cos 2\phi_1 = 0.56 \pm 0.79 \pm 0.11

.

11.30.Er
13.25.Hw
12.15.Hh
B mesons
meson hadronic decay
CP invariance
electron positron: colliding beams
electron positron: annihilation
Upsilon(10570): electroproduction
B: pair production

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