### Sphalerons and the electroweak phase transition in models with higher scalar representations

Ahriche A, Chowdhury TA, Nasri S (2014)
Journal of High Energy Physics 2014(11): 96.

Zeitschriftenaufsatz | Veröffentlicht | Englisch

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Autor*in
Ahriche, Amine; Chowdhury, Talal Ahmed; Nasri, Salah
Einrichtung
Abstract / Bemerkung
In this work we investigate the sphaleron solution in a SU(2) x U(1)(X) gauge theory, which also encompasses the Standard Model, with higher scalar representation(s) (J((i)), X-(i)). We show that the field profiles describing the sphaleron in higher scalar multiplet, have similar trends like the doublet case with respect to the radial distance. We compute the sphaleron energy and find that it scales linearly with the vacuum expectation value of the scalar field and its slope depends on the representation. We also investigate the effect of U(1) gauge field and find that it is small for the physical value of the mixing angle, theta W and resembles the case for the doublet. For higher representations, we show that the criterion for strong first order phase transition, v(c)/T-c > eta, is relaxed with respect to the doublet case, i.e. eta < 1.
Stichworte
Gauge Symmetry; Monopoles and Instantons; Solitons; Cosmology of Theories beyond the SM; Higher Spin Symmetry
Erscheinungsjahr
2014
Zeitschriftentitel
Journal of High Energy Physics
Band
2014
Ausgabe
11
Art.-Nr.
96
ISSN
1029-8479
Finanzierungs-Informationen
Open-Access-Publikationskosten wurden durch die Universität Bielefeld im Rahmen von SCOAP$^3$ – Sponsoring Consortium for Open Access Publishing in Particle Physics gefördert.
Page URI
https://pub.uni-bielefeld.de/record/2900881

### Zitieren

Ahriche A, Chowdhury TA, Nasri S. Sphalerons and the electroweak phase transition in models with higher scalar representations. Journal of High Energy Physics. 2014;2014(11): 96.
Ahriche, A., Chowdhury, T. A., & Nasri, S. (2014). Sphalerons and the electroweak phase transition in models with higher scalar representations. Journal of High Energy Physics, 2014(11), 96. doi:10.1007/jhep11(2014)096
Ahriche, A., Chowdhury, T. A., and Nasri, S. (2014). Sphalerons and the electroweak phase transition in models with higher scalar representations. Journal of High Energy Physics 2014:96.
Ahriche, A., Chowdhury, T.A., & Nasri, S., 2014. Sphalerons and the electroweak phase transition in models with higher scalar representations. Journal of High Energy Physics, 2014(11): 96.
A. Ahriche, T.A. Chowdhury, and S. Nasri, “Sphalerons and the electroweak phase transition in models with higher scalar representations”, Journal of High Energy Physics, vol. 2014, 2014, : 96.
Ahriche, A., Chowdhury, T.A., Nasri, S.: Sphalerons and the electroweak phase transition in models with higher scalar representations. Journal of High Energy Physics. 2014, : 96 (2014).
Ahriche, Amine, Chowdhury, Talal Ahmed, and Nasri, Salah. “Sphalerons and the electroweak phase transition in models with higher scalar representations”. Journal of High Energy Physics 2014.11 (2014): 96.
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2019-09-06T09:18:35Z
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arXiv: 1409.4086

Inspire: 1316519

SCOAP3: 4883