Simulations of Cold Electroweak Baryogenesis: finite time quenches | Zendy

Anders Tranberg | Zendy; Jan Smit | Zendy; Mark Hindmarsh | Zendy

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Simulations of Cold Electroweak Baryogenesis: finite time quenches

Author(s) -

Anders Tranberg,

Jan Smit,

Mark Hindmarsh

Publication year - 2007

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2007/01/034

Subject(s) - baryogenesis , electroweak interaction , physics , inflaton , baryon asymmetry , particle physics , higgs boson , asymmetry , inflation (cosmology) , baryon number , symmetry breaking , baryon , nuclear physics , theoretical physics , electron , lepton

The electroweak symmetry breaking transition may supply the appropriateout-of-equilibrium conditions for baryogenesis if it is triggered sufficientlyfast. This can happen at the end of low-scale inflation, prompting baryogenesisto occur during tachyonic preheating of the Universe, when the potential energyof the inflaton is transfered into Standard Model particles. With the properamount of CP-violation present, the observed baryon number asymmetry can bereproduced. Within this framework of Cold Electroweak Baryogenesis, we studythe dependence of the generated baryon asymmetry on the speed of the quenchingtransition. We find that there is a separation between ``fast'' and ``slow''quenches, which can be used to put bounds on the allowed Higgs-inflatoncoupling. We also clarify the strong Higgs mass dependence of the asymmetryreported in a companion paper (hep-ph/0604263).Comment: 18 pages, 20 figure

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