Baryon asymmetry from dark matter decay in the vicinity of a phase transition

Borah, Debasish; Dasgupta, Arnab; Knauss, Matthew; Saha, Indrajit

doi:10.1103/physrevd.108.l091701

Phys. Rev. D

2023

DOI: 10.1103/physrevd.108.l091701

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Baryon asymmetry from dark matter decay in the vicinity of a phase transition

Debasish Borah,

Arnab Dasgupta,

Matthew Knauss

et al.

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2024

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Cited by 1 publication

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Leptogenesis from a phase transition in a dynamical vacuum

Bhandari,

Datta,

Sil

2024

Phys. Rev. D

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We show that a phase transition may take place in the early Universe at a temperature T* resulting a temperature dependent mass for right-handed neutrinos (RHN) which finally relaxes to a constant value after electroweak symmetry breaking (EWSB). As a result, a requisite amount of lepton asymmetry can be produced near T* satisfying the observed baryon asymmetry of the Universe via the sphaleron process even when zero temperature masses of the RHNs fall below the electroweak scale enhancing the detection possibility of RHNs. Interestingly, the framework is also capable of predicting a primordial lepton asymmetry (generated after EWSB) as hinted by helium abundance measurements, indicating a correlation with the early phase of leptogenesis. Published by the American Physical Society 2024

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Leptogenesis from a phase transition in a dynamical vacuum

Bhandari,

Datta,

Sil

2024

Phys. Rev. D

View full text Add to dashboard Cite

show abstract

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Baryon asymmetry from dark matter decay in the vicinity of a phase transition

Cited by 1 publication

References 104 publications

Leptogenesis from a phase transition in a dynamical vacuum

Leptogenesis from a phase transition in a dynamical vacuum

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