use THE CKM MATRIX AND CP VIOLATION
نویسنده
چکیده
The status of CP violation and the CKM matrix is reviewed. Direct CP violation in B decay has been established and the measurement of sin 2β in ψK modes reached 5% accuracy. I discuss the implications of these, and of the possible deviations of the CP asymmetries in b → s modes from that in ψK. The first meaningful measurements of α and γ are explained, together with their significance for constraining both the SM and new physics in B − B mixing. I also discuss implications of recent developments in the theory of nonleptonic decays for B → πK rates and CP asymmetries, and for the polarization in charmless B decays to two vector mesons.
منابع مشابه
Correlating the Higgs and Kaon Sector CP Violations
Taking the most general two-doublet models with explicit CP violation in the Higgs sector but no phase in the CKM matrix, we determine the correlation between the Higgs and Kaon sectors using the experimental values of ∆MK and ǫK . It is found that: there is a direct correlation between strength of FCNC couplings and the Higgs masses, and the lightest Higgs is nearly pure CP–even, but this smal...
متن کاملCKM Matrix : Present and Future a
We review the present status of the CKM matrix and we offer some visions of its future. After a brief presentation of the theoretical framework for weak decays we discuss the following topics: i) CKM matrix from tree level decays, ii) Standard analysis of the unitarity triangle, iii) CKM matrix from rare and CP violating Kand B-decays, iv) CKM matrix from CP violation in twobody B-decays. In pa...
متن کاملCurrent Status of the CKM Matrix and the CP Violation
These lectures give an introduction and the current status of flavour physics in the quark sector, with special attention to the CKM matrix and CP violation. We describe the measurements which contribute to the determination of the CKM matrix elements and how, together with important theoretical developments, they have significantly improved our knowledge on the flavour sector of the Standard M...
متن کاملA Real CKM Matrix and Physics Beyond the Standard Model
We study the possible existence of a real Cabibbo-Kobayashi-Maskawa (CKM) matrix, with CP violation originating from physics beyond the standard model (SM). We show that present experimental data allow for a real CKM matrix provided that new physics also contributes to ∆mBd by at least 20% of the SM contribution (for ρ > 0), besides generating CP violation in the kaon sector. The naturalness of...
متن کاملDetermining the quark mixing matrix from CP-violating asymmetries.
If the Standard Model explanation of CP violation is correct, then measurements of CP-violating asymmetries in B meson decays can in principle determine the entire quark mixing matrix. According to the Standard Model (SM), CP violation arises from the fact that in the Cabibbo-Kobayashi-Maskawa (CKM) quark mixing matrix, some of the elements are not real. This picture of CP violation will be inc...
متن کاملM. Neubert: Theory of CP Violation in the B-Meson System (LP01) THEORY OF CP VIOLATION IN THE B-MESON SYSTEM
The phenomenon of CP violation is one of the most intriguing aspects of modern physics, with far-reaching implications for the microscopic world as well as for the macrocosmos. CP violation means that there is a fundamental difference between the interactions of matter and anti-matter, which in conjunction with the CPT theorem implies a microscopic violation of time-reversal invariance. CP viol...
متن کامل