Yukawa interactions and supersymmetric electroweak baryogenesis

We analyze the quantum transport equations for supersymmetric electroweak baryogenesis including previously neglected bottom and tau Yukawa interactions and show that they imply the presence of a previously unrecognized dependence of the cosmic baryon asymmetry on the spectrum of third generation qu...

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Bibliographic Details
Published in:Physical review letters 2009-02, Vol.102 (6), p.061301-061301, Article 061301
Main Authors: Chung, Daniel J H, Garbrecht, Björn, Ramsey-Musolf, Michael J, Tulin, Sean
Format: Article
Language:English
Subjects:
ASYMMETRY
B QUARKS
BARYON NUMBER
BARYONS
CP INVARIANCE
INTERACTIONS
LEPTONS
MASS
PARTICLE PRODUCTION
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
SUPERSYMMETRY
TRANSPORT THEORY
YUKAWA NONLOCAL THEORY
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Summary:We analyze the quantum transport equations for supersymmetric electroweak baryogenesis including previously neglected bottom and tau Yukawa interactions and show that they imply the presence of a previously unrecognized dependence of the cosmic baryon asymmetry on the spectrum of third generation quark and lepton superpartners. For fixed values of the CP-violating phases in the supersymmetric theory, the baryon asymmetry can vary in both magnitude and sign as a result of the squark and slepton mass dependence. For light, right-handed top and bottom quark superpartners, the baryon number creation can be driven primarily by interactions involving third generation leptons and their superpartners.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.102.061301