Heating neutron stars with GeV dark matter

Keung, Wai-Yee; Marfatia, Danny; Tseng, Po-Yan

doi:10.1007/jhep07(2020)181

Cited by 29 publications

(12 citation statements)

References 39 publications

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“…The DM interpretations out of these examples, typically have a light mediator via which DM interacts with electrons. The recoil can occur either due to light boosted DM or inelastic up or down-scattering [48][49][50][51][52][53][54][55][56][57][61][62][63][64][65][66][67][68].…”

Section: Introductionmentioning

confidence: 99%

Muon $(g-2)$ and XENON1T Excess with Boosted Dark Matter in $L_μ-L_τ$ Model

Borah,

Dutta,

Mahapatra

et al. 2021

Preprint

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Motivated by the growing evidence for lepton flavour universality violation after the first results from Fermilab's muon (g − 2) measurement, we revisit one of the most widely studied anomaly free extensions of the standard model namely, gauged Lµ − Lτ model, known to be providing a natural explanation for muon (g − 2). We also incorporate the presence of dark matter (DM) in this model in order to explain the recently reported electron recoil excess by the XENON1T collaboration. We show that the same neutral gauge boson responsible for generating the required muon (g − 2) can also mediate interactions between electron and dark fermions boosted by dark matter annihilation. The required DM annihilation rate into dark fermion require a hybrid setup of thermal and non-thermal mechanisms to generate DM relic density. The tightly constrained parameter space from all requirements remain sensitive to ongoing and near future experiments, keeping the scenario very predictive.

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Section: Introductionmentioning

confidence: 99%

Muon $(g-2)$ and XENON1T Excess with Boosted Dark Matter in $L_μ-L_τ$ Model

Borah,

Dutta,

Mahapatra

et al. 2021

Preprint

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“…Before proceeding we note that the latest Fermilab data already lead to several new physics interpretations with connections to other fundamental problems in particle physics, astrophysics, and cosmology. [47][48][49][50][51][52][53][54][55]…”

Section: Introductionmentioning

confidence: 99%

Muon Discrepancy Within D‐brane String Compactifications

Anchordoqui

Antoniadis

Huang

et al. 2021

Fortschritte der Physik

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Very recently, the Muon g − 2 experiment at Fermilab has confirmed the E821 Brookhaven result, which hinted at a deviation of the muon anomalous magnetic moment from the Standard Model (SM) expectation. The combined results from Brookhaven and Fermilab show a difference with the SM prediction δaμ = (251 ± 59) × 10−11 at a significance of 4.2σ, strongly indicating the presence of new physics. Motivated by this new result we reexamine the contributions to δaμ from both: (i) the ubiquitous U(1) gauge bosons of D‐brane string theory constructions and (ii) the Regge excitations of the string. We show that, for a string scale O(PeV), the contribution from anomalous U(1) gauge bosons which couple to hadrons could help to reduce (though not fully eliminate) the discrepancy reported by the Muon g − 2 Collaboration. Consistency with null results from LHC searches of new heavy vector bosons imparts the dominant constraint. We demonstrate that the contribution from Regge excitations is strongly suppressed as it was previously conjectured. We also comment on contributions from Kaluza‐Klein (KK) modes, which could help resolve the δaμ discrepancy. In particular, we argue that for 4‐stack intersecting D‐brane models, the KK excitations of the U(1) boson living on the lepton brane would not couple to hadrons and therefore can evade the LHC bounds while fully bridging the δaμ gap observed at Brookhaven and Fermilab.

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“…On the other hand, DM can be accelerated to the relativistic velocity by the strong gravity of NS, and thus the DM-neutron scattering rate will be boosted. These advantages have drawn much attention and the NS constraints have been applied to different models [18][19][20][21][22][23][24]. Due to the momentum dependency, the PNGDM benefits much from the DM velocity boosting, resulting in stronger constraints from NS reheating temperature than some other DM candidates.…”

Section: Introductionmentioning

confidence: 99%

Constraints on Pseudo-Nambu-Goldstone dark matter from direct detection experiment and neutron star reheating temperature

Zeng,

Xiao,

Wang

2021

Preprint

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Pseudo-Nambu-Goldstone dark matter connected to Standard Model fermion through the Higgs portal has the property that its direct detection vanishes in the zero momentum transfer limit due to a cancellation mechanism. This feature helps the Pseudo-Nambu-Goldstone dark matter to escape the stringent constraints from direct detection experiments. In this paper we explore new constraints on parameter space of non-zero momentum transfer from the direct detection experiments, and also from the neutron star temperature via the dark matter reheating mechanism.

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Heating neutron stars with GeV dark matter

Cited by 29 publications

References 39 publications

Muon $(g-2)$ and XENON1T Excess with Boosted Dark Matter in $L_μ-L_τ$ Model

Muon $(g-2)$ and XENON1T Excess with Boosted Dark Matter in $L_μ-L_τ$ Model

Muon Discrepancy Within D‐brane String Compactifications

Constraints on Pseudo-Nambu-Goldstone dark matter from direct detection experiment and neutron star reheating temperature

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