Cosmological amount of baryons

Tsutomu Yanagida; Motohiko Yoshimura

doi:10.1016/0550-3213(80)90142-X

Cosmological amount of baryons

Tsutomu Yanagida, Motohiko Yoshimura

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

The grand unified SU(5) model is analyzed as to whether it can give a sizable, cosmological baryon asymmetry consistent with the observation, N_B/N_γ = O(10^-8-10^-10). Assuming a recently suggested decay mechanism of the heavy X-boson, we find that a numerical agreement is possible only if the minimal Higgs system is extended to allow a general class of CP violation and if interesting constraints on parameters of the SU(5) model are satisfied.

Original language	English
Pages (from-to)	534-548
Number of pages	15
Journal	Nuclear Physics, Section B
Volume	168
Issue number	3-4
DOIs	https://doi.org/10.1016/0550-3213(80)90142-X
Publication status	Published - Jan 1 1980
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/0550-3213(80)90142-X

Cite this

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abstract = "The grand unified SU(5) model is analyzed as to whether it can give a sizable, cosmological baryon asymmetry consistent with the observation, NB/Nγ = O(10-8-10-10). Assuming a recently suggested decay mechanism of the heavy X-boson, we find that a numerical agreement is possible only if the minimal Higgs system is extended to allow a general class of CP violation and if interesting constraints on parameters of the SU(5) model are satisfied.",

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AU - Yoshimura, Motohiko

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AB - The grand unified SU(5) model is analyzed as to whether it can give a sizable, cosmological baryon asymmetry consistent with the observation, NB/Nγ = O(10-8-10-10). Assuming a recently suggested decay mechanism of the heavy X-boson, we find that a numerical agreement is possible only if the minimal Higgs system is extended to allow a general class of CP violation and if interesting constraints on parameters of the SU(5) model are satisfied.

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Cosmological amount of baryons

Abstract

ASJC Scopus subject areas

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