Effect of Penguin Operators in the B{sup 0}{yields}J/{psi}K{sup 0} CP Asymmetry

Journal Article · Fri Nov 25 00:00:00 EST 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.95.221804· OSTI ID:20699604

Ciuchini, M ^[1]; Pierini, M ^[2]; Silvestrini, L ^[3]

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1. Dipartimento di Fisica, Universita 'La Sapienza' and INFN, Sezione di Roma, P.le A. Moro, I-00185 Rome (Italy)
2. Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)
3. Dipartimento di Fisica, Universita di Roma Tre and INFN, Sezione di Roma III, Via della Vasca Navale 84, I-00146 Rome (Italy)

Performing a fit to the available experimental data, we quantify the effect of long-distance contributions from penguin contractions in B{sup 0}{yields}J/{psi}K{sup 0} decays. We estimate the deviation of the measured S{sub CP} term of the time-dependent CP asymmetry from sin2{beta} induced by these contributions and by the penguin operators. We find {delta}S{identical_to}S{sub CP}(J/{psi}K)-sin2{beta}=0.000{+-}0.012 ([-0.025,0.024]at95% probability), an uncertainty much larger than previous estimates and comparable to the present systematic error quoted by the experiments at the B factories.

• OSTI ID: 20699604
• Journal Information: Physical Review Letters, Vol. 95, Issue 22; Other Information: DOI: 10.1103/PhysRevLett.95.221804; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASYMMETRY
B NEUTRAL MESONS
CP INVARIANCE
EXPERIMENTAL DATA
HADRONIC PARTICLE DECAY
J PSI-3097 MESONS
KAONS NEUTRAL
PROBABILITY
QUANTUM OPERATORS
TIME DEPENDENCE