Self-interacting inelastic dark matter in the light of XENON1T excess

Dutta, Manoranjan; Mahapatra, Satyabrata; Borah, Debasish; Sahu, Narendra

doi:10.1103/physrevd.103.095018

Cited by 35 publications

(15 citation statements)

References 79 publications

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“…The light mediator also mixes with the SM Higgs paving a way for detecting DM at direct detection experiments [83,84]. Several model building efforts have been made to realize such scenarios, see [85][86][87][88][89][90][91][92] and references therein.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric Self-interacting Dark Matter via Dirac Leptogenesis

Dutta¹,

Narendra²,

Sahu³

et al. 2022

Preprint

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The nature of neutrinos, whether Dirac or Majorana, is hitherto not known. Assuming that the neutrinos are Dirac, which needs B − L to be an exact symmetry, we make an attempt to explain the observed proportionality between the relic densities of dark matter (DM) and baryonic matter in the present Universe i.e., ΩDM ≈ 5 ΩB. Assuming the existence of heavy SU (2)L scalar doublet (X = (X 0 , X − ) T ) in the early Universe, an equal and opposite B − L asymmetry can be generated in left and right-handed sectors by the CP-violating out-of-equilibrium decay X 0 → νLνR since B − L is an exact symmetry. We ensure that νL − νR equilibration does not occur until below the electroweak (EW) phase transition during which a part of the lepton asymmetry gets converted to dark matter asymmetry through a dimension eight operator, which conserves B −L symmetry and is in thermal equilibrium. The remaining B − L asymmetry then gets converted to a net B-asymmetry through EW-sphalerons which are active at a temperature above 100 GeV. To alleviate the small-scale anomalies of ΛCDM, we assume the DM to be self-interacting via a light mediator, which not only depletes the symmetric component of the DM, but also paves a way to detect the DM at terrestrial laboratories through scalar portal mixing.

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Section: Introductionmentioning

confidence: 99%

Asymmetric Self-interacting Dark Matter via Dirac Leptogenesis

Dutta¹,

Narendra²,

Sahu³

et al. 2022

Preprint

Self Cite

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“…The excess might indicate new physics beyond the SM (BSM) if not the tritium background [5]. Possible explanations include axion or axion-like particles [6][7][8][9][10][11][12][13][14], elastic [15][16][17][18][19][20][21][22][23][24][25] and inelastic [26][27][28][29][30][31][32][33][34][35][36][37] scattering between DM and electron, the Migdal effect of DM scattering with nuclei [38], and DM decay [39][40][41][42]. Another possibility is sterile neutrino as DM in our galaxy.…”

Section: Introductionmentioning

confidence: 99%

Solar Active-Sterile Neutrino Conversion with Atomic Effects at Dark Matter Direct Detection Experiments

Ge,

Pasquini,

Sheng

2021

Preprint

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The recent XENON1T excess can be explained by the solar active-sterile neutrino conversion with bound electrons via light mediator. Nevertheless, the atomic effects are usually omitted in the solar neutrino explanations. We systematically establish a second quantization formalism for both bound and ionized electrons to account for the atomic effects. This formalism is of great generality to incorporate various interactions for both neutrino and dark matter scatterings. Our calculation shows that the change in the cross section due to atomic effects can have important impact on the differential cross section. It is necessary to include atomic effects in the low-energy electron recoil signal at dark matter direct detection experiments even for energetic solar neutrinos. With the best-fit values to the XENON1T data, we also project the event rate at PandaX-4T, XENONnT, and LZ experiments.

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“…Several model building efforts have been made to realise such scenarios. For example, see [23][24][25][26][27][28][29][30][31] and references therein.…”

Section: Introductionmentioning

confidence: 99%

Singlet-Doublet Self-interacting Dark Matter and Radiative Neutrino Mass

Borah,

Dutta,

Mahapatra

et al. 2021

Preprint

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Self-interacting dark matter (SIDM) with a light mediator is a promising scenario to alleviate the small-scale problems of the cold dark matter paradigm while being consistent with the latter at large scales, as suggested by astrophysical observations. This, however, leads to an under-abundant SIDM relic due to large annihilation rates into mediator particles, often requiring an extension of the simplest thermal or non-thermal relic generation mechanism. In this work, we consider a singlet-doublet fermion dark matter scenario where the singlet fermion with a light scalar mediator gives rise to the velocity-dependent dark matter self-interaction through a Yukawa type attractive potential. The doublet fermion, by virtue of its tiny mixing with the singlet, can be long-lived and can provide a non-thermal contribution to the singlet relic at late epochs, filling the deficit in the thermal relic of singlet SIDM. The light scalar mediator, due to its mixing with the standard model Higgs, paves the path for detecting such SIDM at terrestrial laboratories leading to constraints on model parameters from CRESST-III and XENON1T experiments. Enlarging the dark sector particles by two more singlet fermions and one scalar doublet, all odd under an unbroken Z2 symmetry can also explain non-zero neutrino mass in scotogenic fashion.

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Self-interacting inelastic dark matter in the light of XENON1T excess

Cited by 35 publications

References 79 publications

Asymmetric Self-interacting Dark Matter via Dirac Leptogenesis

Asymmetric Self-interacting Dark Matter via Dirac Leptogenesis

Solar Active-Sterile Neutrino Conversion with Atomic Effects at Dark Matter Direct Detection Experiments

Singlet-Doublet Self-interacting Dark Matter and Radiative Neutrino Mass

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