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arXiv 1004.0942hep-phastro-ph.COhep-th
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munuSSM中的电弱相变

Electroweak Phase Transition in the munuSSM

Daniel J. H. Chung, Andrew J. Long

摘要:

MSSM的一个扩展称为munuSSM不允许传统的热leptogenesis的情况下,因为它利用低规模的跷跷板。因此,我们研究了电弱重子发生的可能性。具体来说,我们确定了一个参数区域的电弱相变是足够强的第一阶实现电弱重子。除了类似于NMSSM中的那些过渡,我们发现一类新的相变,其中有一个旋转的单重向量空间。

英文摘要:

An extension of the MSSM called the munuSSM does not allow a conventional thermal leptogenesis scenario because of the low scale seesaw that it utilizes. Hence, we investigate the possibility of electroweak baryogenesis. Specifically, we identify a parameter region for which the electroweak phase transition is sufficiently strongly first order to realize electroweak baryogenesis. In addition to transitions that are similar to those in the NMSSM, we find a novel class of phase transitions in which there is a rotation in the singlet vector space.

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