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Stop-catalyzed baryogenesis beyond the MSSM

Katz, Andrey and Perelstein, Maxim and Ramsey-Musolf, Michael J. and Winslow, Peter (2015) Stop-catalyzed baryogenesis beyond the MSSM. Physical Review D, 92 (9). Art. No. 095019. ISSN 1550-7998.

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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. 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.

Item Type:Article
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URLURL TypeDescription
Katz, Andrey0000-0003-3487-7049
Ramsey-Musolf, Michael J.0000-0001-8110-2479
Additional Information:Published by the American Physical Society. This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. (Received 21 September 2015; published 19 November 2015) We are grateful to Roberto Franceschini, Michelangelo Mangano and Veronica Sanz for useful discussions. The work of A. K. was accomplished at the Aspen Center for Physics, which is supported by National Science Foundation grant PHY-1066293. The research of A. K. and M. J. R. M. was also supported by the Munich Institute for Astro- and Particle Physics (MIAPP) of the DFG cluster of excellence “Origin and Structure of the Universe”. M. P. is supported by the U.S. National Science Foundation through Grant No. PHY-1316222. M. J. R. M. and P. W. were supported in part by U.S. Department of Energy Contract No. DE-SC0011095.
Funding AgencyGrant Number
Munich Institute for Astro- and Particle Physics (MIAPP)UNSPECIFIED
Deutsche Forschungsgemeinschaft (DFG)Origin and Structure of the Universe
Department of Energy (DOE)DE-SC0011095
Issue or Number:9
Classification Code:PACS numbers: 12.60.Jv
Record Number:CaltechAUTHORS:20151218-102819160
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Official Citation:Stop-catalyzed baryogenesis beyond the MSSM Andrey Katz, Maxim Perelstein, Michael J. Ramsey-Musolf, and Peter Winslow Phys. Rev. D 92, 095019 – Published 19 November 2015
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:63066
Deposited By: George Porter
Deposited On:18 Dec 2015 23:54
Last Modified:09 Mar 2020 13:18

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