Dimensional reduction of the Standard Model coupled to a new singlet scalar field

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http://hdl.handle.net/10138/181074

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Brauner , T , Tenkanen , T V I , Tranberg , A , Vuorinen , A & Weir , D J 2017 , ' Dimensional reduction of the Standard Model coupled to a new singlet scalar field ' , Journal of High Energy Physics , vol. 2017 , no. 03 , 007 . https://doi.org/10.1007/JHEP03(2017)007

Title: Dimensional reduction of the Standard Model coupled to a new singlet scalar field
Author: Brauner, Tomas; Tenkanen, Tuomas V. I.; Tranberg, Anders; Vuorinen, Aleksi; Weir, David J.
Contributor: University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
Date: 2017-03-01
Language: eng
Number of pages: 53
Belongs to series: Journal of High Energy Physics
ISSN: 1029-8479
URI: http://hdl.handle.net/10138/181074
Abstract: We derive an effective dimensionally reduced theory for the Standard Model augmented by a real singlet scalar. We treat the singlet as a superheavy field and integrate it out, leaving an effective theory involving only the Higgs and SU(2)(L) x U(1)(y) gauge fields, identical to the one studied previously for the Standard Model. This opens up the possibility of efficiently computing the order and strength of the electroweak phase transition, numerically and nonperturbatively, in this extension of the Standard Model. Understanding the phase diagram is crucial for models of electroweak baryogenesis and for studying the production of gravitational waves at thermal phase transitions.
Subject: Beyond Standard Model
Effective field theories
Thermal Field Theory
ELECTROWEAK PHASE-TRANSITION
HIGGS-BOSON COUPLINGS
BARYON ASYMMETRY
CP-VIOLATION
NONPERTURBATIVE ANALYSIS
EARLY UNIVERSE
BARYOGENESIS
TEMPERATURE
LEPTOGENESIS
114 Physical sciences
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