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

Abstract

We investigate the impact of the intrinsic heavy quark states on the predicted values of CP asymmetries in the 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 additional non-perturbative uncertainty into the estimate of direct CP violating effects. We provide a phenomenological estimate of intrinsic charm content of eta and eta' 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 -> eta^(') K^(*).

17 pages, RevTex, 1 table, 2 figures

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• Final State Interactions and New Physics in B -> pi K Decays
• Rescattering Effects, Isospin Relations and Electroweak Penguins in B -> pi K Decays
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Cited by in corpus (29)

• Mixing and Decay Constants of Pseudoscalar Mesons
• Charmless Hadronic Two-body Decays of B_u and B_d Mesons
• CP-Violating Asymmetries in Charmless Non-Leptonic Decays $B\to PP,PV,VV$ in the Factorization Approach
• Heavy quark mass expansion and intrinsic charm in light hadrons
• Radiative Decays, Nonet Symmetry and SU(3) Breaking
• Nonfactorizable Effects in Spectator and Penguin Amplitudes of Hadronic Charmless B Decays
• B -> K eta(') decay in perturbative QCD
• Charmless Hadronic Two-body Decays of the B_s Mesons
• Evading the CKM Hierarchy: Intrinsic Charm in B Decays
• Lepton flavor-violating transitions in effective field theory and gluonic operators
• $|V_{ub}|$ and $B\to {\eta }^{{(}^{\prime })}$ Form Factors in Covariant Light Front Approach
• $B\to {\eta }^{(\prime )}({\ell }^{-}{\bar{\nu }}_{\ell },{\ell }^{+}{\ell }^{-},K,K^{\ast })$ decays in the quark-flavor mixing scheme
• ${\eta }_c$ mixing effects on charmonium and $B$ meson decays
• Electromagnetic Transition Form Factor of Pseudoscalar Meson and $\eta -{\eta }^{\prime }$ Mixing
• CP Asymmetries of $B\to \varphi K$ and $B\to {\eta }^{(\prime )}K$ Decays Using a Global Fit in QCD Factorization
• A gluonic mechanism for B --> D eta'
• Understanding the radiative decays of vector charmonia to light pseudoscalar mesons
• Exclusive Radiative Z-Boson Decays to Mesons with Flavor-Singlet Components
• Anomalous enhancement of a penguin hadronic matrix element in B->K eta'
• On the heavy quark mass expansion for the operator Qbar gamma_5 Q and the charm content of eta, eta'
• Power corrections to the space-like transition form factor F_{η^{\prime}g^{*}g^{*}}(Q^2,ω)
• Semi-inclusive B Decays and Direct CP Violation in QCD Factorization
• Probing Intrinsic Charm with Semileptonic B Decays
• Flavor $SU(3)$ in Cabibbo-favored $D$-meson decays
• On the Role of Charm in Decay of B-mesons to η' K
• Mixing effects of $\eta -{\eta }^{\prime }$ in ${\Lambda }_b\to \Lambda {\eta }^{{(}^{\prime })}$ decays
• LFV couplings of the extra gauge boson Z' and leptonic decay and production of pseudoscalar mesons
• Soft end-point and mass corrections to the eta' g*g* vertex function
• Intrinsic Charm in B-Meson Decays