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Mass Matrix Models: The Sequel
Miriam Leurer, Yosef Nir, Nathan Seiberg
The smallness of the quark sector parameters and the hierarchy between them could be the result of a horizontal symmetry broken by a small parameter. Such an explicitly broken symm…
New Physics Effects on CP Violation in Decays
Yosef Nir
We review new physics effects on CP violation in B decays. We describe the Standard Model predictions for the various types of CP asymmetries and discuss the theoretical cleanlines…
The Decay in Heavy Quark Effective Theory
Gustavo Burdman, Zoltan Ligeti, Matthias Neubert +1
We present a systematic analysis of the weak decay form factors to order in the heavy quark effective theory, including a discussion of renormalizati…
Implications of for CP Violation in Charged Scalar Exchange
Yuval Grossman, Yosef Nir
In models of three or more scalar doublets, new CP violating phases appear in charged scalar exchange. These phases affect CP asymmetries in neutral decays, even if Natural Fla…
The Subleading Isgur-Wise Form Factor and its Implications for the Decays
Z. Ligeti, Y. Nir, M. Neubert
We calculate, in the framework of QCD sum rules and to next-to-leading order in perturbation theory, the universal function which appears at order in the h…
Should Squarks Be Degenerate?
Yosef Nir, Nathan Seiberg
For generic squark masses, box diagrams with squarks and gluinos give unacceptably large contributions to neutral meson (, and ) mixing. The standard solution to this pro…