Intrinsic charm of light mesons and CP violation in heavy quark decay

Journal Article · Tue Sep 01 04:00:00 EDT 1998 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.58.054004· OSTI ID:641567

Petrov, A A ^[1]

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1. Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, Maryland 21218 (United States)

We investigate the impact of intrinsic heavy quark states on predicted values of CP asymmetries in decays of heavy mesons. It is shown that the intrinsic charm contribution, although dynamically suppressed in QCD, is favored by the weak interaction, and therefore it can significantly dilute the predicted values of CP-violating asymmetries. This introduces an additional nonperturbative uncertainty into the estimate of direct CP-violating effects. We provide a phenomenological estimate of the intrinsic charm content of {eta} and {eta}{sup {prime}} mesons by expanding various amplitudes in terms of the heavy-light quark mixing angle and discuss theoretical uncertainties in the estimates of direct CP-violating asymmetries in B{r_arrow}{eta}{sup ({prime})}K{sup ({sup {asterisk}})}. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 641567
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 5 Vol. 58; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CHARM PARTICLES
CP INVARIANCE
ETA PRIME-958 MESONS
MESONS
MIXING
QUANTUM CHROMODYNAMICS
QUARKS
STANDARD MODEL