Constraining the CKM Parameters using CP Violation in semi-leptonic B Decays

Abstract

We discuss the usefulness of the CP violating semi-leptonic asymmetry a_{SL} not only as a signal of new physics, but also as a tool in constraining the CKM parameters. We show that this technique could yield useful results in the first years of running at the B factories. We present the analysis graphically in terms of M_{12}, the dispersive part of the B-Bbar mixing amplitude. This is complementary to the usual unitarity triangle representation and often allows a cleaner interpretation of the data.

15 pages REVTEX, 7 figures

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• Anatomy of New Physics in B-Bbar mixing
• SM with four generations: Selected implications for rare B and K decays
• Implications of the CP asymmetry in semileptonic B decay
• Measurement of the Lifetime Difference of $B_d$ Mesons: Possible and Worthwhile?
• Charge Asymmetry of Same-Sign Dileptons in $B^0$-${\bar{B}}^0$ Mixing
• The D0 same-charge dimuon asymmetry and possibile new CP violation sources in the $B_s-{\bar{B}}_s$ system
• Search for T and CP Violation in B0-anti-B0 Mixing with Inclusive Dilepton Events
• Penguin contribution to width difference and CP asymmetry in $B_q$-${\bar{B}}_q$ mixing at order ${\alpha }_s^2{N}_f$
• Present and Future CP Measurements