Probing bino-wino coannihilation dark matter below the neutrino floor at the LHC

Duan, Guang Hua; Hikasa, K.; Ren, Jie; Wu, Lei; Yang, Jin Min

doi:10.1103/physrevd.98.015010

Cited by 24 publications

(19 citation statements)

References 70 publications

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“…Overall, we find that the combination of LZ and the HL-LHC should be able to probe most of the region consistent with the g − 2. Furthermore, the bounds on the wino-like NLSP from compressed searches can also be expected to improve in the future [55,56]. A recent analysis suggests that soft lepton searches may eventually be able to exclude wino masses below 310 (430) GeV with 300 ð3000Þ fb −1 [56].…”

Section: Ab −W Coannihilationmentioning

confidence: 99%

Muon g−2 and dark matter in the minimal supersymmetric standard model

2018

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We investigate the possibility that both dark matter and the long-standing discrepancy in the anomalous magnetic moment of the muon may be explained within the minimal supersymmetric standard model. In light of the stringent bounds from direct detection, we argue that the most promising viable scenarios have bino-like dark matter produced via either bino-wino or bino-slepton coannihilation. We find that the combination of next-generation direct detection experiments and the LHC will be able to probe much of the interesting parameter space; however a future high-energy collider is needed to comprehensively explore this scenario.

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Section: Ab −W Coannihilationmentioning

confidence: 99%

Muon g−2 and dark matter in the minimal supersymmetric standard model

2018

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“…It is understood that Y ψ − = Y ψ + , and the factors of 2 in the fourth and fifth line of Eqns. (32) are to account for terms where ψ − appears instead of ψ + . The thermally averaged annihilation cross-sections are defined as usual:…”

Section: Coannihilation and Coscattering In The Singlet-triplet Modelmentioning

confidence: 99%

“…The possible collider signatures for singlet-triplet models have been analyzed in detail e.g. in [10,16,20,[29][30][31][32][33]. Therefore, here we will only briefly review the state of the most important LHC search for the model in the coscattering phase, which is the search for disappearing charged tracks.…”

Section: Constraints and Signaturesmentioning

confidence: 99%

Coscattering in next-to-minimal dark matter and split supersymmetry

Brümmer

2020

J. High Energ. Phys.

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In some models of thermal relic dark matter, the relic abundance may be set by inelastic scattering processes (rather than annihilations) becoming inefficient as the universe cools down. This effect has been called coscattering. We present a procedure to numerically solve the full momentum-dependent Boltzmann equations in coscattering, which allows for a precise calculation of the dark matter relic density including the effects of early kinetic decoupling. We apply our method to a simple model, containing a fermionic SU(2) triplet and a fermionic singlet with electroweak-scale masses, at small triplet-singlet mixing. The relic density can be set by either coannihilation or, at values of the mixing angle θ 10 −5 , by coscattering. We identify the parameter ranges which give rise to the observed relic abundance. As a special case, we study bino-like dark matter in split supersymmetry at large µ.

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“…This leads to the upper limits of the neutralino DM and its coannilating partner masses, which provides a guideline of searching for supersymmetry at colliders. Therefore, it is interesting to explore various coannihilation scenarios at the LHC and future colliders [22][23][24][25][26][27][28][29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

On the coverage of neutralino dark matter in coannihilations at the upgraded LHC

Abdughani

2020

Eur. Phys. J. C

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In the supersymmetric models, the coannihilation of the neutralino DM with a lighter supersymmetric particle provides a feasible way to accommodate the observed cosmological DM relic density. Such a mechanism predicts a compressed spectrum of the neutralino DM and its coannihilating partner, which results in the soft final states and makes the searches for sparticles challenging at colliders. On the other hand, the abundance of the freeze-out neutralino DM usually increases as the DM mass becomes heavier. This implies an upper bound on the mass of the neutralino DM. Given these observations, we explore the HE-LHC coverage of the neutralino DM for the coannihilations. By analyzing the events of the multijet with the missing transverse energy (E miss T ), the monojet, the soft lepton pair plus E miss T , and the monojet plus a hadronic tau, we find that the neutralino DM mass can be excluded up to 2.6, 1.7 and 0.8 TeV in the gluino, stop and wino coannihilations at the 2σ level, respectively. However, there is still no sensitivity of the neutralino DM in stau coannihilation at the HE-LHC, due to the small cross section of the direct stau pair production and the low tagging efficiency of soft tau from the stau decay.

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Probing bino-wino coannihilation dark matter below the neutrino floor at the LHC

Cited by 24 publications

References 70 publications

Muon g−2 and dark matter in the minimal supersymmetric standard model

Muon g−2 and dark matter in the minimal supersymmetric standard model

Coscattering in next-to-minimal dark matter and split supersymmetry

On the coverage of neutralino dark matter in coannihilations at the upgraded LHC

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