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Title: Complex scalar dark matter in a B - L model

Abstract

In this work, we implement a complex scalar dark matter (DM) candidate in a Uð1ÞB-L gauge extension of the Standard Model. The model contains three right-handed neutrinos with different quantum numbers and a rich scalar sector, with extra doublets and singlets. In principle, these extra scalars can have vacuum expectation values (VΦ and VΦ for the extra doublets and singlets, respectively) belonging to different energy scales. In the context of ζ ≡ VΦ VΦ << 1, which allows one to obtain naturally light active neutrino masses and mixing compatible with neutrino experiments, the DM candidate arises by imposing a Z2 symmetry on a given complex singlet, Φ2, in order to make it stable. After doing a study of the scalar potential and the gauge sector, we obtain all the DM-dominant processes concerning the relic abundance and direct detection. Then, for a representative set of parameters, we find that a complex DM with mass around 200 GeV, for example, is compatible with the current experimental constraints without resorting to resonances. However, additional compatible solutions with heavier masses can be found in vicinities of resonances. Finally, we address the issue of having a light CP-odd scalar in the model showing that itmore » is safe concerning the Higgs and the Zμ-boson invisible decay widths, and also astrophysical constraints regarding energy loss in stars.« less

Authors:
; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior; USDOE Office of Science - Office of High Energy Physics
OSTI Identifier:
1391763
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles, Fields, Gravitation and Cosmology; Journal Volume: 90; Journal Issue: 5
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Sánchez–Vega, B. L., Montero, J. C., and Schmitz, E. R.. Complex scalar dark matter in a B - L model. United States: N. p., 2014. Web. doi:10.1103/PhysRevD.90.055022.
Sánchez–Vega, B. L., Montero, J. C., & Schmitz, E. R.. Complex scalar dark matter in a B - L model. United States. doi:10.1103/PhysRevD.90.055022.
Sánchez–Vega, B. L., Montero, J. C., and Schmitz, E. R.. Mon . "Complex scalar dark matter in a B - L model". United States. doi:10.1103/PhysRevD.90.055022.
@article{osti_1391763,
title = {Complex scalar dark matter in a B - L model},
author = {Sánchez–Vega, B. L. and Montero, J. C. and Schmitz, E. R.},
abstractNote = {In this work, we implement a complex scalar dark matter (DM) candidate in a Uð1ÞB-L gauge extension of the Standard Model. The model contains three right-handed neutrinos with different quantum numbers and a rich scalar sector, with extra doublets and singlets. In principle, these extra scalars can have vacuum expectation values (VΦ and VΦ for the extra doublets and singlets, respectively) belonging to different energy scales. In the context of ζ ≡ VΦ VΦ << 1, which allows one to obtain naturally light active neutrino masses and mixing compatible with neutrino experiments, the DM candidate arises by imposing a Z2 symmetry on a given complex singlet, Φ2, in order to make it stable. After doing a study of the scalar potential and the gauge sector, we obtain all the DM-dominant processes concerning the relic abundance and direct detection. Then, for a representative set of parameters, we find that a complex DM with mass around 200 GeV, for example, is compatible with the current experimental constraints without resorting to resonances. However, additional compatible solutions with heavier masses can be found in vicinities of resonances. Finally, we address the issue of having a light CP-odd scalar in the model showing that it is safe concerning the Higgs and the Zμ-boson invisible decay widths, and also astrophysical constraints regarding energy loss in stars.},
doi = {10.1103/PhysRevD.90.055022},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
number = 5,
volume = 90,
place = {United States},
year = {Mon Sep 01 00:00:00 EDT 2014},
month = {Mon Sep 01 00:00:00 EDT 2014}
}