Protecting the baryon asymmetry with thermal masses

S. Davidson; K. Kainulainen; K. A. Olive

doi:10.1016/0370-2693(94)90361-1

Protecting the baryon asymmetry with thermal masses

S. Davidson, K. Kainulainen, K. A. Olive

Physics and Astronomy (Twin Cities)

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

18 Scopus citations

Abstract

We consider the evolution of baryon number B in the early universe under the influence of rapid sphaleron interactions and show that B will remain nonzero at all times even in the case of B - L = 0. This result arises due to thermal Yukawa interactions that cause nonidentical dispersion relations (thermal masses) for different lepton families. We point out the relevance of our result to the Affleck-Dine type baryogenesis.

Original language	English (US)
Pages (from-to)	339-344
Number of pages	6
Journal	Physics Letters B
Volume	335
Issue number	3-4
DOIs	https://doi.org/10.1016/0370-2693(94)90361-1
State	Published - Sep 8 1994

Bibliographical note

Funding Information:
K.K. wishes to thank Jim Cline and S.D. wishes to thank H. Murayama and J. March-Russel for useful discussions. This research was supported by the DOE grant DE-FB02-94ER40823, by NSF grant AST 91-20005, by NSERC, KAO:s Presidential Young Investigator Award and by (K.K.) the Finnish Academy.

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title = "Protecting the baryon asymmetry with thermal masses",

abstract = "We consider the evolution of baryon number B in the early universe under the influence of rapid sphaleron interactions and show that B will remain nonzero at all times even in the case of B - L = 0. This result arises due to thermal Yukawa interactions that cause nonidentical dispersion relations (thermal masses) for different lepton families. We point out the relevance of our result to the Affleck-Dine type baryogenesis.",

author = "S. Davidson and K. Kainulainen and Olive, {K. A.}",

note = "Funding Information: K.K. wishes to thank Jim Cline and S.D. wishes to thank H. Murayama and J. March-Russel for useful discussions. This research was supported by the DOE grant DE-FB02-94ER40823, by NSF grant AST 91-20005, by NSERC, KAO:s Presidential Young Investigator Award and by (K.K.) the Finnish Academy.",

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doi = "10.1016/0370-2693(94)90361-1",

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AU - Kainulainen, K.

AU - Olive, K. A.

N1 - Funding Information: K.K. wishes to thank Jim Cline and S.D. wishes to thank H. Murayama and J. March-Russel for useful discussions. This research was supported by the DOE grant DE-FB02-94ER40823, by NSF grant AST 91-20005, by NSERC, KAO:s Presidential Young Investigator Award and by (K.K.) the Finnish Academy.

PY - 1994/9/8

Y1 - 1994/9/8

N2 - We consider the evolution of baryon number B in the early universe under the influence of rapid sphaleron interactions and show that B will remain nonzero at all times even in the case of B - L = 0. This result arises due to thermal Yukawa interactions that cause nonidentical dispersion relations (thermal masses) for different lepton families. We point out the relevance of our result to the Affleck-Dine type baryogenesis.

AB - We consider the evolution of baryon number B in the early universe under the influence of rapid sphaleron interactions and show that B will remain nonzero at all times even in the case of B - L = 0. This result arises due to thermal Yukawa interactions that cause nonidentical dispersion relations (thermal masses) for different lepton families. We point out the relevance of our result to the Affleck-Dine type baryogenesis.

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U2 - 10.1016/0370-2693(94)90361-1

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VL - 335

SP - 339

EP - 344

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 3-4

ER -

Protecting the baryon asymmetry with thermal masses

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