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Title: Stop-catalyzed baryogenesis beyond the MSSM

Abstract

Nonminimal supersymmetric models that predict a tree-level Higgs mass above the minimal supersymmetric standard model (MSSM) bound are well motivated by naturalness considerations. Indirect constraints on the stop sector parameters of such models are significantly relaxed compared to the MSSM; in particular, both stops can have weak-scale masses. We revisit the stop-catalyzed electroweak baryogenesis (EWB) scenario in this context. We find that the LHC measurements of the Higgs boson production and decay rates already rule out the possibility of stop-catalyzed EWB. Here, we also introduce a gauge-invariant analysis framework that may generalize to other scenarios in which interactions outside the gauge sector drive the electroweak phase transition.

Authors:
; ; ;
Publication Date:
Research Org.:
Univ. of Massachusetts, Amherst, MA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1226507
Alternate Identifier(s):
OSTI ID: 1435626
Grant/Contract Number:  
SC0011095
Resource Type:
Published Article
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Name: Physical Review. D, Particles, Fields, Gravitation and Cosmology Journal Volume: 92 Journal Issue: 9; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Katz, Andrey, Perelstein, Maxim, Ramsey-Musolf, Michael J., and Winslow, Peter. Stop-catalyzed baryogenesis beyond the MSSM. United States: N. p., 2015. Web. doi:10.1103/PhysRevD.92.095019.
Katz, Andrey, Perelstein, Maxim, Ramsey-Musolf, Michael J., & Winslow, Peter. Stop-catalyzed baryogenesis beyond the MSSM. United States. doi:https://doi.org/10.1103/PhysRevD.92.095019
Katz, Andrey, Perelstein, Maxim, Ramsey-Musolf, Michael J., and Winslow, Peter. Thu . "Stop-catalyzed baryogenesis beyond the MSSM". United States. doi:https://doi.org/10.1103/PhysRevD.92.095019.
@article{osti_1226507,
title = {Stop-catalyzed baryogenesis beyond the MSSM},
author = {Katz, Andrey and Perelstein, Maxim and Ramsey-Musolf, Michael J. and Winslow, Peter},
abstractNote = {Nonminimal supersymmetric models that predict a tree-level Higgs mass above the minimal supersymmetric standard model (MSSM) bound are well motivated by naturalness considerations. Indirect constraints on the stop sector parameters of such models are significantly relaxed compared to the MSSM; in particular, both stops can have weak-scale masses. We revisit the stop-catalyzed electroweak baryogenesis (EWB) scenario in this context. We find that the LHC measurements of the Higgs boson production and decay rates already rule out the possibility of stop-catalyzed EWB. Here, we also introduce a gauge-invariant analysis framework that may generalize to other scenarios in which interactions outside the gauge sector drive the electroweak phase transition.},
doi = {10.1103/PhysRevD.92.095019},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
number = 9,
volume = 92,
place = {United States},
year = {2015},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: https://doi.org/10.1103/PhysRevD.92.095019

Citation Metrics:
Cited by: 6 works
Citation information provided by
Web of Science

Figures / Tables:

FIG. 1 FIG. 1: Regions of stop parameter space allowed by the LHC Higgs measurements (blue—67% CL and green— 95% CL) vs. the domain where the stop-catalyzed EWB can potentially be viable (ξ > 0) in pink. Mass of the light stop is fixed at 100 GeV. The unphysical region (no solutionmore » for θt) is shaded in purple.« less

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.