Flavor constraints on split fermion models
نویسندگان
چکیده
منابع مشابه
Flavor Constraints on Split Fermion Models
We examine the contributions to rare processes that arise in models where the Standard Model fermions are localized at distinct points in compact extra dimensions. Tree-level flavor changing neutral current interactions for the Kaluza-Klein (KK) gauge field excitations are induced in such models, and hence strong constraints are thought to exist on the size of the additional dimensions. We find...
متن کاملFlavor Changing Fermion-Graviton Vertices
We study the flavor-changing quark-graviton vertex that is induced at the one-loop level when gravitational interactions are coupled to the Standard Model. Due to the conservation of the energy-momentum tensor the corresponding form factors turn out to be finite and gauge-invariant. Analytical expressions of the form factors are provided at the leading order in the external masses. We show that...
متن کاملEffects of Flavor Violation on Split Supersymmetry
We discuss consequences of flavor mixings in the scalar fermion sector of supersymmetric models endowed with ultra heavy scalars except for a finely-tuned light Higgs. We find that intergenerational mixings in sfermion mass-squared matrices generically lead to light states which facilitate a number of phenomena ranging from rare processes to electric dipole moments. For avoiding such light part...
متن کاملAnthropic Constraints on Fermion Masses *
It is conceivable that some of the properties of the physical world might not be uniquely determined by an underlying dynamical principle, but might instead reflect the requirement that those properties be compatible with the existence of intelligent observers like us, capable of studying them. In modern theoretical physics, this controversial idea is called the “anthropic principle” [1]. Broad...
متن کاملFlavor Constraints on New Physics
This talk highlights, from a theoretical point of view, some recent exciting results in flavor physics, as well as future prospects. We discuss possible implications of a subset of the experimental results in tension with the standard model, such as the 4σ deviation in the B→ D(∗)τν̄ decay rates, and recent improvements in the constraints on axion portal dark matter models. We use the examples o...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2003
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.68.116002