Effect of Penguin Operators in the B{sup 0}{yields}J/{psi}K{sup 0} CP Asymmetry
Journal Article
·
· Physical Review Letters
- Dipartimento di Fisica, Universita 'La Sapienza' and INFN, Sezione di Roma, P.le A. Moro, I-00185 Rome (Italy)
- Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)
- 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, Journal Name: Physical Review Letters Journal Issue: 22 Vol. 95; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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