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In: Physics Letters B, Vol. 456, No. 2-4, 10.06.1999, p. 118-123.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

McDonald, J 1999, 'Positive order-H-2 mass corrections and Affleck-Dine baryogenesis', *Physics Letters B*, vol. 456, no. 2-4, pp. 118-123. https://doi.org/10.1016/S0370-2693(99)00492-X

McDonald, J. (1999). Positive order-H-2 mass corrections and Affleck-Dine baryogenesis. *Physics Letters B*, *456*(2-4), 118-123. https://doi.org/10.1016/S0370-2693(99)00492-X

McDonald J. Positive order-H-2 mass corrections and Affleck-Dine baryogenesis. Physics Letters B. 1999 Jun 10;456(2-4):118-123. doi: 10.1016/S0370-2693(99)00492-X

@article{ba812367d7814e52928d68fb9f7a9f48,

title = "Positive order-H-2 mass corrections and Affleck-Dine baryogenesis",

abstract = "It is usually assumed that the order H-2 corrections to the SUSY-breaking mass squared terms in the early Universe must he negative in order to allow the Affleck-Dine mechanism to work. We reconsider this assumption in the context of D-term inflation models for the case where the mass squared term has a correction cH(2) with c > 0. We show that, in general, the baryon asymmetry is likely to be too small if c > 9/16. However, for c as large as 0.5 the observed baryon asymmetry can be readily generated; in particular, for d = 6 directions the observed asymmetry can be produced for a wide range of reheating temperatures, in contrast with the case of negative H-2 corrections which require a reheating temperature around 1 GeV. Thus positive H-2 corrections do not rule out the Affleck-Dine mechanism and can even greatly broaden its applicability to inflation models.",

keywords = "D-TERM INFLATION, ENTROPY CRISIS, STANDARD MODEL, SUPERSYMMETRY, SUPERGRAVITY, UNIVERSE",

author = "John McDonald",

year = "1999",

month = jun,

day = "10",

doi = "10.1016/S0370-2693(99)00492-X",

language = "English",

volume = "456",

pages = "118--123",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "ELSEVIER SCIENCE BV",

number = "2-4",

}

TY - JOUR

T1 - Positive order-H-2 mass corrections and Affleck-Dine baryogenesis

AU - McDonald, John

PY - 1999/6/10

Y1 - 1999/6/10

N2 - It is usually assumed that the order H-2 corrections to the SUSY-breaking mass squared terms in the early Universe must he negative in order to allow the Affleck-Dine mechanism to work. We reconsider this assumption in the context of D-term inflation models for the case where the mass squared term has a correction cH(2) with c > 0. We show that, in general, the baryon asymmetry is likely to be too small if c > 9/16. However, for c as large as 0.5 the observed baryon asymmetry can be readily generated; in particular, for d = 6 directions the observed asymmetry can be produced for a wide range of reheating temperatures, in contrast with the case of negative H-2 corrections which require a reheating temperature around 1 GeV. Thus positive H-2 corrections do not rule out the Affleck-Dine mechanism and can even greatly broaden its applicability to inflation models.

AB - It is usually assumed that the order H-2 corrections to the SUSY-breaking mass squared terms in the early Universe must he negative in order to allow the Affleck-Dine mechanism to work. We reconsider this assumption in the context of D-term inflation models for the case where the mass squared term has a correction cH(2) with c > 0. We show that, in general, the baryon asymmetry is likely to be too small if c > 9/16. However, for c as large as 0.5 the observed baryon asymmetry can be readily generated; in particular, for d = 6 directions the observed asymmetry can be produced for a wide range of reheating temperatures, in contrast with the case of negative H-2 corrections which require a reheating temperature around 1 GeV. Thus positive H-2 corrections do not rule out the Affleck-Dine mechanism and can even greatly broaden its applicability to inflation models.

KW - D-TERM INFLATION

KW - ENTROPY CRISIS

KW - STANDARD MODEL

KW - SUPERSYMMETRY

KW - SUPERGRAVITY

KW - UNIVERSE

U2 - 10.1016/S0370-2693(99)00492-X

DO - 10.1016/S0370-2693(99)00492-X

M3 - Journal article

VL - 456

SP - 118

EP - 123

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 2-4

ER -