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38 papers · 2 filters
Early Universe effective theories: The Soft Leptogenesis and R-Genesis Cases
Chee Sheng Fong, M. C. Gonzalez-Garcia, Enrico Nardi
We discuss the effective theory appropriate for studying soft leptogenesis at temperatures T>10^7 GeV. In this regime, the main source of the B-L asymmetry is the CP asymmetry of a…
Higher-Loop Corrections to the Infrared Evolution of a Gauge Theory with Fermions
Thomas A. Ryttov, Robert Shrock
We consider a vectorial, asymptotically free gauge theory and analyze the effect of higher-loop corrections to the beta function on the evolution of the theory from the ultraviolet…
Low Mass Gluino within the Sparticle Landscape, Implications for Dark Matter, and Early Discovery Prospects at LHC-7
Ning Chen, Daniel Feldman, Zuowei Liu +2
We analyze supergravity models that predict a low mass gluino within the landscape of sparticle mass hierarchies. The analysis includes a broad class of models that arise in minima…
Patterns of Dynamical Gauge Symmetry Breaking
Ning Chen, Thomas A. Ryttov, Robert Shrock
We construct and analyze theories with a gauge symmetry in the ultraviolet of the form , in which the vectorial, asymptotically free gauge interaction becomes…
CP Violation from Scatterings with Gauge Bosons in Leptogenesis
Chee Sheng Fong, M. C. Gonzalez-Garcia, J. Racker
We present an explicit computation of the CP asymmetry in scattering processes involving the heavy right-handed neutrinos of the type I seesaw framework and the Standard Model gaug…
Axial anomaly, Dirac sea, and the chiral magnetic effect
Dmitri E. Kharzeev
Gribov viewed the axial anomaly as a manifestation of the collective motion of charged fermions with arbitrarily high momenta in the vacuum. In the presence of an external magnetic…