Interplay of Higgs and Sparticle Masses in the CMSSM with updated SUSY constraints

Belyaev, Alexander; Dar, Shahida; Gogoladze, Ilia; Mustafayev, Azar; Shafi, Qaisar

doi:10.48550/arxiv.0712.1049

Cited by 3 publications

(3 citation statements)

References 87 publications

(105 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Higgs-penguins dominate in the regime of large tan β ≃ 60 and light H/A Higgs boson mass ∼ 100 GeV, and enhance rates by up to a few orders of magnitude [15]. However, the latter condition cannot be realized in the universal scenario (2.3) [45]. It was shown in Ref.…”

Section: Susy-seesaw and Lfv Processesmentioning

confidence: 94%

SUSY dark matter and lepton flavor violation

Barger,

Marfatia,

Mustafayev

et al. 2009

Preprint

Self Cite

View full text Add to dashboard Cite

We study lepton flavor-violating (LFV) processes within a supersymmetric type-I seesaw framework with flavor-blind universal boundary conditions, properly accounting for the effect of the neutrino sector on the dark matter relic abundance. We consider several possibilities for the neutrino Yukawa coupling matrix and show that in regions of SUSY parameter space that yield the correct neutralino relic density, LFV rates can differ from naive estimates by up to two orders of magnitude. Contrary to common belief, we find that current LFV limits do not exclude neutrino Yukawa couplings larger than top Yukawa couplings. We introduce the ISAJET-M program that was used for the computations.

show abstract

Section: Susy-seesaw and Lfv Processesmentioning

confidence: 94%

SUSY dark matter and lepton flavor violation

Barger,

Marfatia,

Mustafayev

et al. 2009

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, this scenario, known as the 'bulk region', is highly constrained due to the experimental lower bound on the Higgs mass. In general, in order to fulfill such a JCAP03(2010)007 constraint either heavy or mixed stops are required [29]. In the BMSSM, nevertheless, it is possible to re-open the bulk region regardless of the structure of the stop sector.…”

Section: Correlated Stop-slepton Massesmentioning

confidence: 99%

Dark matter detection in the BMSSM

Bernal¹,

Goudelis

2010

J. Cosmol. Astropart. Phys.

View full text Add to dashboard Cite

The addition of non-renormalizable terms involving the Higgs fields to the MSSM (BMSSM) ameliorates the little hierarchy problem of the MSSM. For neutralino dark matter, new regions for which the relic abundance of the LSP is consistent with WMAP (as the bulk region and the stop coannihilation region) are now permitted. In this framework, we analyze in detail the direct dark matter detection prospects in a XENON-like experiment. On the other hand, we study the capability of detecting gamma-rays, antiprotons and positrons produced in the annihilation of neutralino LSPs in the Fermi and oncoming AMS-02 experiments.

show abstract

“…There are several recent works which discuss dark matter [28,29,30,31,32,33,34,35,36] and collider physics [37,38,39,40,41,42,43,44,45,46,47]. The analysis presented here is very focused in that it connects LHC signatures directly to the possible origin of dark matter, and here we consider two dominant mechanisms, i.e., stau coannihilation and annihilation on the HB.…”

mentioning

confidence: 99%

Decoding the mechanism for the origin of dark matter in the early universe using LHC data

2008

View full text Add to dashboard Cite

It is shown that LHC data can allow one to decode the mechanism by which dark matter is generated in the early universe in supersymmetric theories. We focus on two of the major mechanisms for such generation of dark matter which are known to be the Stau Coannihilation (Stau-Co) where the neutralino is typically Bino like and annihilation on the Hyperbolic Branch (HB) where the neutralino has a significant Higgsino component. An investigation of how one may discriminate between the Stau-Co region and the HB region using LHC data is given for the mSUGRA model. The analysis utilizes several signatures including multi leptons, hadronic jets, b-tagging, and missing transverse momentum. A study of the SUSY signatures reveals several correlated smoking gun signals allowing a clear discrimination between the Stau-Co and the HB regions where dark matter in the early universe can originate.Introduction. In the near future, data from the LHC will be available allowing one to test models of physics beyond the Standard Model (SM). Supersymmetry (SUSY) and more specifically supergravity grand unified models[1, 2, 3] provide a well motivated framework for the exploration of new physics. Thus supergravity grand unified models naturally lead to the lightest neutralino as the lightest SUSY particle, or the LSP, over a significant part of the parameter space and with R parity it is then a candidate for dark matter. An analysis of the relic density of the LSP reveals three broad regions where the WMAP [4] constraints are satisfied: these include (1) the Hyperbolic Branch (HB) [5,6] where multi TeV scalars can appear consistent with small fine tuning (this region is alternately referred sometimes as the Focus Point region (FP) or as HB/FP), (2) the coannihilation regions [7,8,9,10,11], (3) the Higgs pole region [12] (for recent work on these regions(1-3) see [13,14,15,16]). Of these, the stau coannihilation region and the HB region are more generic while the pole region (light Higgs and the CP odd Higgs A) is more fine tuned. In addition there is also the parameter space in the bulk region where the relic density is satisfied due to a combination of effects. An interesting issue relates to the following: to what extent the LHC data will allow one to decode the mechanism by which dark matter is generated in the early universe. Specifically we will focus on dark matter originating in the Stau-Co region or in the HB region to answer this question.For concreteness we work within the framework of the mSUGRA model[1], which is characterized by the parameters m 0 , m 1/2 , A 0 , tan β and sign(µ), where m 0 is the universal scalar mass, m 1/2 is the universal gaugino

show abstract

Interplay of Higgs and Sparticle Masses in the CMSSM with updated SUSY constraints

Cited by 3 publications

References 87 publications

SUSY dark matter and lepton flavor violation

SUSY dark matter and lepton flavor violation

Dark matter detection in the BMSSM

Decoding the mechanism for the origin of dark matter in the early universe using LHC data

Contact Info

Product

Resources

About