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Title: Stop-catalyzed baryogenesis beyond the MSSM

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:
 [1] ;  [2] ;  [3] ;  [4]
  1. European Organization for Nuclear Research (CERN), Geneva (Switzerland)
  2. Cornell Univ., Ithaca, NY (United States)
  3. Univ. of Massachusetts, Amherst, MA (United States); California Inst. of Technology (CalTech), Pasadena, CA (United States)
  4. Univ. of Massachusetts, Amherst, MA (United States)
Publication Date:
Grant/Contract Number:
SC0011095
Type:
Published Article
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 92; Journal Issue: 9; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Research Org:
Univ. of Massachusetts, Amherst, MA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1226507
Alternate Identifier(s):
OSTI ID: 1435626

Katz, Andrey, Perelstein, Maxim, Ramsey-Musolf, Michael J., and Winslow, Peter. Stop-catalyzed baryogenesis beyond the MSSM. United States: N. p., 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:10.1103/PhysRevD.92.095019.
Katz, Andrey, Perelstein, Maxim, Ramsey-Musolf, Michael J., and Winslow, Peter. 2015. "Stop-catalyzed baryogenesis beyond the MSSM". United States. doi: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}
}