Probing the light Higgs pole resonance annihilation of dark matter in the light of XENON100 and CDMS-II observations

Chattopadhyay, Utpal; Das, Debottam; Ghosh, Dilip Kumar; Maity, M.

doi:10.1103/physrevd.82.075013

Cited by 15 publications

(9 citation statements)

References 132 publications

(125 reference statements)

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“…Thus, some aspects of the minimal supergravity models where the relics annihilate near the light CP-even Higgs pole have been discussed in Ref. [14][15][16][17][18][19], which fall under the mass hierarchy denoted by mSP4 (supergravity mass pattern 4) [14,15], where, in particular, a clean edge in the dilepton invariant mass in this model class was noted in Ref. [15].…”

Section: Introductionmentioning

confidence: 99%

Predictive signatures of supersymmetry: Measuring the dark matter mass and gluino mass with early LHC data

et al. 2011

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We present a focused study of a predictive unified model whose measurable consequences are immediately relevant to early discovery prospects of supersymmetry at the LHC. ATLAS and CMS have released their analysis with 35 pb −1 of data and the model class we discuss is consistent with this data. It is shown that with an increase in luminosity the LSP dark matter mass and the gluino mass can be inferred from simple observables such as kinematic edges in leptonic channels and peak values in effective mass distributions. Specifically, we consider cases in which the neutralino is of low mass and where the relic density consistent with WMAP observations arises via the exchange of Higgs bosons in unified supergravity models. The magnitudes of the gaugino masses are sharply limited to focused regions of the parameter space, and in particular the dark matter mass lies in the range ∼ (50 − 65) GeV with an upper bound on the gluino mass of 575 GeV, with a typical mass of 450 GeV. We find that all model points in this paradigm are discoverable at the LHC at √ s = 7 TeV. We determine lower bounds on the entire sparticle spectrum in this model based on existing experimental constraints. In addition, we find the spin-independent cross section for neutralino scattering on nucleons to be generally in the range of σ SĨ χ 0 1 p = 10 −46±1 cm 2 with much higher cross sections also possible. Thus direct detection experiments such as CDMS and XENON already constrain some of the allowed parameter space of the low mass gaugino models and further data will provide important cross-checks of the model assumptions in the near future.

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Section: Introductionmentioning

confidence: 99%

Predictive signatures of supersymmetry: Measuring the dark matter mass and gluino mass with early LHC data

et al. 2011

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“…Spin-independent LSP-proton scattering may take place through s-channel squark exchange and t-channel Higgs exchange diagrams. When the squarks are considerably heavy, the Higgs exchange diagrams typically dominate [74,75] 6 .…”

Section: Direct Detectionmentioning

confidence: 99%

“…When the squarks are considerably heavy, the Higgs exchange diagrams typically dominate [182,183]. 6 The Higgs-χ 0 1 -χ 0 1 coupling for the higgsino-LSP case can be written down in the form [146]:…”

Section: Jhep09(2017)064mentioning

confidence: 99%

How light a higgsino or a wino dark matter can become in a compressed scenario of MSSM

Chakraborti¹,

Chattopadhyay²,

Poddar³

2017

J. High Energ. Phys.

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Higgsinos and Wino have strong motivations for being Dark Matter (DM) candidates in supersymmetry, but their annihilation cross sections are quite large. For thermal generation and a single component DM setup the higgsinos or wino may have masses of around 1 or 2-3 TeV respectively. For such DM candidates, a small amount of slepton coannihilation may decrease the effective DM annihilation cross section. This, in turn reduces the lower limit of the relic density satisfied DM mass by more than 50%. Almost a similar degree of reduction of the same limit is also seen for squark coannihilations. However, on the contrary, for near degeneracy of squarks and higgsino DM, near its generic upper limit, the associated coannihilations may decrease the relic density, thus extending the upper limit towards higher DM masses. We also compute the direct and indirect detection signals. Here, because of the quasi-mass degeneracy of the squarks and the LSP, we come across a situation where squark exchange diagrams may contribute significantly or more strongly than the Higgs exchange contributions in the spin-independent direct detection cross section of DM. For the higgsino-DM scenario, we observe that a DM mass of 600 GeV to be consistent with WMAP/PLANCK and LUX data for sfermion coannihilations. The LUX data itself excludes the region of 450 to 600 GeV, by a half order of magnitude of the cross-section, well below the associated uncertainty. The similar combined lower limit for a wino DM is about 1.1 TeV. There is hardly any collider bound from the LHC for squarks and sleptons in such a compressed scenario where sfermion masses are close to the mass of a higgsino/wino LSP.

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“…This sparticle, usually chosen as the lightest neutralino, is a popular DM candidate. This weakly interacting massive particle (WIMP) may explain the observed DM in the universe [13][14][15][16][17][18][19][20][21][66][67][68][69][70][71][72][73][74][75]. The first stringent constraint on the pMSSM came from the WMAP measurement [76] of the DM relic density.…”

Section: Introductionmentioning

confidence: 99%

Revisiting the gluino mass limits in the pMSSM in the light of the latest LHC data and Dark Matter constraints

Mukherjee,

Niyogi,

Poddar

2022

Preprint

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The purpose of this paper is to examine the model dependence of the stringent constraints on the gluino mass obtained from the Large Hadron Collider (LHC) experiments by analyzing the Run II data using specific simplified models based on several ad hoc sparticle spectra which cannot be realized even in the fairly generic pMSSM models. We first revisit the bounds on the gluino mass placed by the ATLAS collaboration using the 1l + jets + E / T data. We show that the exclusion region in the M g − M χ 0 1 plane in the pMSSM scenario sensitively depends on the mass hierarchy between the left and right squarks and composition of the lighter electroweakinos and, to a lesser extent, other parameters. Most importantly, for higgsino type lighter electroweakinos (except for the LSP), the bound on the gluino mass from this channel practically disappears.However, if such models are confronted by the ATLAS jets + E / T data, fairly strong limits are regained. Thus in the pMSSM an analysis involving a small number of channels may provide more reliable mass limits. We have also performed detailed analyses on neutralino dark matter (DM)constraints in the models we have studied and have found that for a significant range of *

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Probing the light Higgs pole resonance annihilation of dark matter in the light of XENON100 and CDMS-II observations

Cited by 15 publications

References 132 publications

Predictive signatures of supersymmetry: Measuring the dark matter mass and gluino mass with early LHC data

Predictive signatures of supersymmetry: Measuring the dark matter mass and gluino mass with early LHC data

How light a higgsino or a wino dark matter can become in a compressed scenario of MSSM

Revisiting the gluino mass limits in the pMSSM in the light of the latest LHC data and Dark Matter constraints

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