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Title: Dark matter with Dirac and Majorana gaugino masses

Abstract

We consider the minimal supersymmetric extension of the Standard Model allowing both Dirac and Majorana gauginos. The Dirac masses are obtained by pairing up extra chiral multiplets: a singlet S for U(1){sub Y}, a triplet T for SU(2){sub w} and an octet O{sub g} for SU(3){sub c} with the respective gauginos. The electroweak symmetry breaking sector is modified by the couplings of the new fields S and T to the Higgs doublets. We discuss two limits: i) both the adjoint scalars are decoupled with the main effect being the modification of the Higgs quartic coupling; ii) the singlet remaining light, and due to its direct coupling to sfermions, providing a new contribution to the soft masses and inducing new decay/production channels. We discuss the LSP in this scenario; after mentioning the possibility that it may be a Dirac gravitino, we focus on the case where it is identified with the lightest neutralino, and exhibit particular values of the parameter space where the relic density is in agreement with WMAP data. This is illustrated for different scenarios where the LSP is either a bino (in which case it can be a Dirac fermion) or bino-higgsino/wino mixtures. We also point out inmore » each case the peculiarity of the model with respect to dark matter detection experiments.« less

Authors:
 [1]; ; ;  [2]
  1. LAPTH, Univ. de Savoie, CNRS, B.P. 110, F-74941 Annecy-le-Vieux (France)
  2. LPTHE, Université Pierre et Marie Curie, Paris VI (France)
Publication Date:
OSTI Identifier:
22273235
Resource Type:
Journal Article
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2009; Journal Issue: 08; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CHIRALITY; FERMIONS; HIGGS BOSONS; HIGGS MODEL; NONLUMINOUS MATTER; REST MASS; SCALARS; STANDARD MODEL; SU-2 GROUPS; SUPERSYMMETRY; SYMMETRY BREAKING; TRIPLETS; U-1 GROUPS; VISIBLE RADIATION

Citation Formats

Belanger, G., Benakli, K., Goodsell, M., Moura, C., and Pukhov, A., E-mail: belanger@lapp.in2p3.fr, E-mail: kbenakli@lpthe.jussieu.fr, E-mail: goodsell@lpthe.jussieu.fr, E-mail: moura@lpthe.jussieu.fr, E-mail: pukhov@lapp.in2p3.fr. Dark matter with Dirac and Majorana gaugino masses. United States: N. p., 2009. Web. doi:10.1088/1475-7516/2009/08/027.
Belanger, G., Benakli, K., Goodsell, M., Moura, C., & Pukhov, A., E-mail: belanger@lapp.in2p3.fr, E-mail: kbenakli@lpthe.jussieu.fr, E-mail: goodsell@lpthe.jussieu.fr, E-mail: moura@lpthe.jussieu.fr, E-mail: pukhov@lapp.in2p3.fr. Dark matter with Dirac and Majorana gaugino masses. United States. https://doi.org/10.1088/1475-7516/2009/08/027
Belanger, G., Benakli, K., Goodsell, M., Moura, C., and Pukhov, A., E-mail: belanger@lapp.in2p3.fr, E-mail: kbenakli@lpthe.jussieu.fr, E-mail: goodsell@lpthe.jussieu.fr, E-mail: moura@lpthe.jussieu.fr, E-mail: pukhov@lapp.in2p3.fr. Sat . "Dark matter with Dirac and Majorana gaugino masses". United States. https://doi.org/10.1088/1475-7516/2009/08/027.
@article{osti_22273235,
title = {Dark matter with Dirac and Majorana gaugino masses},
author = {Belanger, G. and Benakli, K. and Goodsell, M. and Moura, C. and Pukhov, A., E-mail: belanger@lapp.in2p3.fr, E-mail: kbenakli@lpthe.jussieu.fr, E-mail: goodsell@lpthe.jussieu.fr, E-mail: moura@lpthe.jussieu.fr, E-mail: pukhov@lapp.in2p3.fr},
abstractNote = {We consider the minimal supersymmetric extension of the Standard Model allowing both Dirac and Majorana gauginos. The Dirac masses are obtained by pairing up extra chiral multiplets: a singlet S for U(1){sub Y}, a triplet T for SU(2){sub w} and an octet O{sub g} for SU(3){sub c} with the respective gauginos. The electroweak symmetry breaking sector is modified by the couplings of the new fields S and T to the Higgs doublets. We discuss two limits: i) both the adjoint scalars are decoupled with the main effect being the modification of the Higgs quartic coupling; ii) the singlet remaining light, and due to its direct coupling to sfermions, providing a new contribution to the soft masses and inducing new decay/production channels. We discuss the LSP in this scenario; after mentioning the possibility that it may be a Dirac gravitino, we focus on the case where it is identified with the lightest neutralino, and exhibit particular values of the parameter space where the relic density is in agreement with WMAP data. This is illustrated for different scenarios where the LSP is either a bino (in which case it can be a Dirac fermion) or bino-higgsino/wino mixtures. We also point out in each case the peculiarity of the model with respect to dark matter detection experiments.},
doi = {10.1088/1475-7516/2009/08/027},
url = {https://www.osti.gov/biblio/22273235}, journal = {Journal of Cosmology and Astroparticle Physics},
issn = {1475-7516},
number = 08,
volume = 2009,
place = {United States},
year = {2009},
month = {8}
}