scholarly journals Dark matter and Higgs boson collider implications of fermions in an Abelian-gauged hidden sector

2009 ◽  
Vol 680 (1) ◽  
pp. 88-93 ◽  
Author(s):  
Shrihari Gopalakrishna ◽  
Seung J. Lee ◽  
James D. Wells
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Hidden Sector

scholarly journals THE HIGGS PORTAL AND AN UNIFIED MODEL FOR DARK ENERGY AND DARK MATTER

2008 ◽  
Vol 23 (30) ◽  
pp. 4817-4827 ◽  
Author(s):  
O. BERTOLAMI ◽  
R. ROSENFELD
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Higgs Boson ◽  
Higgs Field ◽  
Vacuum Expectation ◽  
Classical Field ◽  
Dark Matter Candidate ◽  
Hidden Sector ◽  
Quintessence Field ◽  
The Universe

We examine a scenario where the Higgs boson is coupled to an additional Standard Model singlet scalar field from a hidden sector. We show that, in the case where this field is very light and has already relaxed to its nonzero vacuum expectation value, one gets a very stringent limit on the mixing angle between the hidden sector scalar and the Higgs field from fifth force experiments. However, this limit does not imply in a small coupling due to the large difference of vacuum expectation values. In the case that the hidden sector scalar is identified with the quintessence field, responsible for the recent acceleration of the universe, the most natural potential describing the interaction is disfavored since it results in a time-variation of the Fermi scale. We show that an ad hoc modification of the potential describing the Higgs interaction with the quintessence field may result in an unified picture of dark matter and dark energy, where dark energy is the zero-mode classical field rolling the usual quintessence potential and the dark matter candidate is the quantum excitation (particle) of the field, which is produced in the universe due to its coupling to the Higgs boson. This coupling also generates a mass for the new particle that, contrary to usual quintessence models, does not have to be small, since it does not affect the evolution of classical field. In this scenario, a feasible dark matter density can be, under conditions, obtained.

scholarly journals Hidden-sector-assisted 125 GeV Higgs boson

2012 ◽  
Vol 86 (3) ◽  
Author(s):  
Bumseok Kyae ◽  
Jong-Chul Park
Keyword(s):  
Higgs Boson ◽  
Hidden Sector

scholarly journals R-PARITY VIOLATING U(1)′-EXTENDED SUPERSYMMETRIC STANDARD MODEL

2008 ◽  
Vol 23 (39) ◽  
pp. 3271-3283 ◽  
Author(s):  
HYE-SUNG LEE
Keyword(s):  
Dark Matter ◽  
Gauge Symmetry ◽  
Standard Model ◽  
Supersymmetric Standard Model ◽  
Discrete Symmetries ◽  
Discrete Symmetry ◽  
New Physics ◽  
Dark Matter Candidate ◽  
Hidden Sector

Supersymmetry is one of the best motivated new physics scenarios. To build a realistic supersymmetric standard model, however, a companion symmetry is necessary to address various issues. While R-parity is a popular candidate that can address the proton and dark matter issues simultaneously, it is not the only option for such a property. We review how a TeV scale U(1)′ gauge symmetry can replace the R-parity. Discrete symmetries of the U(1)′ can make the model still viable and attractive with distinguishable phenomenology. For instance, with a residual discrete symmetry of the U(1)′, Z6 = B3 × U2, the proton can be protected by the baryon triality (B3) and a hidden sector dark matter candidate can be protected by the U-parity (U2).

scholarly journals Connection of gamma rays, dark matter, and Higgs boson searches at the LHC

2012 ◽  
Vol 86 (7) ◽  
Author(s):  
J. D. Ruiz-Alvarez ◽  
C. A. de S. Pires ◽  
Farinaldo S. Queiroz ◽  
D. Restrepo ◽  
P. S. Rodrigues da Silva
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Gamma Rays
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