Baryogenesis via leptogenesis: Spontaneous B and L violation
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79 ASTRONOMY AND ASTROPHYSICS↗
Engineering topics
Plascencia, Alexis D.
Publications and source records attributed to Plascencia, Alexis D..
Electric dipole moments, new forces and dark matter
New sources of CP violation beyond the Standard Model are crucial to explain the baryon asymmetry in the Universe. We discuss the impact of new CP violating interactions in theories where a dark matter candidate is predicted by the cancellation of gauge anomalies. In these theories, the constraint on the dark matter relic density implies an upper bound on the new symmetry breaking scale from which all new states acquire their masses. We investigate in detail the predictions for electric dipole moments and show that if the relevant CP-violating phase is large, experiments such as the ACME collaboration will be able to fully probe the theory.
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
Baryonic Higgs and dark matter
We discuss the correlation between dark matter and Higgs decays in gauge theories where the dark matter is predicted from anomaly cancellation. In these theories, the Higgs responsible for the breaking of the gauge symmetry generates the mass for the dark matter candidate. We investigate the Higgs decays in the minimal gauge theory for Baryon number. After imposing the dark matter density and direct detection constraints, we find that the new Higgs can have a large branching ratio into two photons or into dark matter. Furthermore, we discuss the production channels and the unique signatures at the Large Hadron Collider.
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
Probing the nature of neutrinos with a new force
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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
The Higgs and leptophobic force at the LHC
The Higgs boson could provide the key to discover new physics at the Large Hadron Collider. We investigate novel decays of the Standard Model (SM) Higgs boson into leptophobic gauge bosons which can be light in agreement with all experimental constraints. We study the associated production of the SM Higgs and the leptophobic gauge boson that could be crucial to test the existence of a leptophobic force. Our results demonstrate that it is possible to have a simple gauge extension of the SM at the low scale, without assuming very small couplings and in agreement with all the experimental bounds that can be probed at the LHC.
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗