Access Type
Open Access Dissertation
Date of Award
January 2011
Degree Type
Dissertation
Degree Name
Ph.D.
Department
Physics and Astronomy
First Advisor
Alexey A. Petrov
Abstract
We examine possible New Physics impact on certain heavy quark flavor involving processes, such as charm and bottom strange meson-antimeson
oscillations and leptonic meson decays. Also, we consider a possibility of
explaining within a two-Higgs doublet extension of the Standard Model the quark and charged lepton mass hierarchy. We show that the experimental value of the lifetime difference in D⊃0⊃-anti-D⊃0⊃ mixing may be due to destructive interference of the Standard Model and New Physics contributions. We examine next possible correlations between the New Physics contribution to B⊂s⊂ mixing mass difference and B⊂s⊂ ⊃+⊃-⊃ leptonic decay .We show that these correlations tend to rule out possible large New Physics contribution to B⊂s⊂ μ⊃+⊃-⊃ . We propose also to explain within a general two-Higgs doublet extension of the Standard Model the quark and lepton mass hierarchy by imposing some basis invariant conditions on the quark and lepton Yukawa matrices with no or little hierarchy in Yukawa couplings.
Recommended Citation
Yeghiyan, Gagik, "Flavor physics beyond the standard model" (2011). Wayne State University Dissertations. 340.
https://digitalcommons.wayne.edu/oa_dissertations/340