Difference: FJPPLHighEnergyPhysics (6 vs. 7)
Revision 72016-08-02 - Main.GenevieveGilbert
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| > > | Several astrophysical or cosmological observations (evidences for dark matter, baryon asymmetry, inflation...) require an extension of the Standard Model of particle physics (so-called “beyond the standard model” (BSM) physics). Our project aims at investigating some theoretical ideas advanced to tackle several of the above-mentioned problems and their related phenomenological tests. In particular, we give high importance to the possibility to achieve the solution to several of these puzzles within the same (relatively simple) framework, as well as to the opportunity to establish links with the latest discoveries in the field of particle physics, notably Higgs and neutrino oscillations. For instance, the inflaton field may be related to the mass generation mechanism of right handed neutrinos, needed for neutrino oscillations, providing at the same time a dark matter candidate. We focus in particular on scenarios where the inflation and/or the additional degrees of freedom needed in a UV completion of the model are at or below the TeV scale, with obvious interesting implication for collider searches, at the energy frontier and/or at the intensity one. One such simple and attractive model is for instance the SM extension via a gauged U_{B-L}(1) symmetry, where the electroweak symmetry is radiatively broken by the Coleman-Weinberg mechanism. Some implications for small-field inflation inspired by this model have been already been analyzed in Ref. [1]. Others, notably for the reheating (at low temperatures), dark matter production, and possibly the associated Z’ phenomenology, are currently under scrutiny | |||||||
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French members : P. Serpico, | ||||||||
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| S. Iso
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| > > | [1] S. Iso, K. Kohri and K. Shimada, "Dynamical fine-tuning of initial conditions for small field inflation," Phys. Rev. D 93, 084009 (2016) [arXiv:1511.05923] | |||||||
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