Evidence for CP violation in B0->J/Psi pi0 decays

The BaBar Collaboration; Philip Clark

doi:10.1103/PhysRevLett.101.021801

Evidence for CP violation in B0->J/Psi pi0 decays

The BaBar Collaboration, Philip Clark

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract / Description of output

We present measurements of the branching fraction and time-dependent CP asymmetries in B0->J/Psi pi0 decays based on 466 million Y(4S)->BBbar events collected with the BaBar detector at the SLAC PEP-II asymmetric-energy B factory. We measure the CP asymmetry parameters S=-1.23 +/- 0.21 +/- 0.04 and C=-0.20 +/- 0.19 +/- 0.03, where the measured value of S is 4.0 standard deviations from zero including systematic uncertainties. The branching fraction is determined to be B(B0->J/Psi pi0)=(1.69 +/- 0.14 +/- 0.07)*10^{-5}.

Original language	English
Journal	Physical Review Letters
DOIs	https://doi.org/10.1103/PhysRevLett.101.021801
Publication status	Published - 6 Apr 2008

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hep-ex

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10.1103/PhysRevLett.101.021801

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title = "Evidence for CP violation in B0->J/Psi pi0 decays",

abstract = "We present measurements of the branching fraction and time-dependent CP asymmetries in B0->J/Psi pi0 decays based on 466 million Y(4S)->BBbar events collected with the BaBar detector at the SLAC PEP-II asymmetric-energy B factory. We measure the CP asymmetry parameters S=-1.23 +/- 0.21 +/- 0.04 and C=-0.20 +/- 0.19 +/- 0.03, where the measured value of S is 4.0 standard deviations from zero including systematic uncertainties. The branching fraction is determined to be B(B0->J/Psi pi0)=(1.69 +/- 0.14 +/- 0.07)*10^{-5}.",

keywords = "hep-ex",

author = "B. Aubert and Stephen Playfer and {The BaBar Collaboration} and Philip Clark",

note = "Submitted to Phys. Rev. Lett",

year = "2008",

month = apr,

day = "6",

doi = "10.1103/PhysRevLett.101.021801",

language = "English",

journal = "Physical Review Letters",

issn = "1079-7114",

publisher = "American Physical Society",

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TY - JOUR

T1 - Evidence for CP violation in B0->J/Psi pi0 decays

AU - Aubert, B.

AU - Playfer, Stephen

AU - The BaBar Collaboration

AU - Clark, Philip

N1 - Submitted to Phys. Rev. Lett

PY - 2008/4/6

Y1 - 2008/4/6

N2 - We present measurements of the branching fraction and time-dependent CP asymmetries in B0->J/Psi pi0 decays based on 466 million Y(4S)->BBbar events collected with the BaBar detector at the SLAC PEP-II asymmetric-energy B factory. We measure the CP asymmetry parameters S=-1.23 +/- 0.21 +/- 0.04 and C=-0.20 +/- 0.19 +/- 0.03, where the measured value of S is 4.0 standard deviations from zero including systematic uncertainties. The branching fraction is determined to be B(B0->J/Psi pi0)=(1.69 +/- 0.14 +/- 0.07)*10^{-5}.

AB - We present measurements of the branching fraction and time-dependent CP asymmetries in B0->J/Psi pi0 decays based on 466 million Y(4S)->BBbar events collected with the BaBar detector at the SLAC PEP-II asymmetric-energy B factory. We measure the CP asymmetry parameters S=-1.23 +/- 0.21 +/- 0.04 and C=-0.20 +/- 0.19 +/- 0.03, where the measured value of S is 4.0 standard deviations from zero including systematic uncertainties. The branching fraction is determined to be B(B0->J/Psi pi0)=(1.69 +/- 0.14 +/- 0.07)*10^{-5}.

KW - hep-ex

UR - http://www.scopus.com/inward/record.url?scp=48249084570&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.101.021801

DO - 10.1103/PhysRevLett.101.021801

M3 - Article

SN - 1079-7114

JO - Physical Review Letters

JF - Physical Review Letters

ER -

Evidence for CP violation in B0->J/Psi pi0 decays

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