Dipole moment bounds on dark matter annihilation

Fukushima, Keita; Kumar, Jason

doi:10.1103/physrevd.88.056017

Cited by 37 publications

(51 citation statements)

References 48 publications

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“…Similar observation was made for the hot QCD equations of state in Ref. [55], where the authors applied the Gribov-Zwanziger gluon propagators. We also expect that the insensitivity to α s should significantly stabilize our analyses of various quantities at finite density.…”

Section: Introductionsupporting

confidence: 71%

Gluon propagator in two-color dense QCD: Massive Yang-Mills approach at one loop

Suenaga

Kojo

2019

Phys. Rev. D

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We study the Landau gauge gluon propagators in dense two-color QCD at quark chemical potential, µq, in the range from 0.5 to 1.0 GeV not reachable by the perturbative method at weak coupling. In order to take into account the non-perturbative effects, at tree level we use a massive Yang-Mills model for the Yang-Mills theory (or the Curci-Ferrari model) which has successfully described the lattice results of the gluon and ghost propagators in the Landau gauge. We couple quarks to this theory and compute the one-loop polarization effects in medium. The presence of the gluon mass significantly tempers the medium effects and uncertainties associated with the strong coupling constant αs. The diquark condensate in two-color QCD is color-singlet, for which neither electric nor magnetic screening masses should appear at the scale less than the diquark gap. The presence of the gap helps to explain the lattice results which are not very sensitive to the quark density. Meanwhile we also found the limitation of the one-loop estimate as well as the lack of some physics in perturbative medium corrections. *

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Section: Introductionsupporting

confidence: 71%

Gluon propagator in two-color dense QCD: Massive Yang-Mills approach at one loop

Suenaga

Kojo

2019

Phys. Rev. D

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“…Finally, as shown in (d) of Figure 1, the Lagrangian (3) also leads to a correction to the anomalous electric and magnetic dipole moments of the electron [19]:…”

Section: Constraints On Dipole Moment Correctionsmentioning

confidence: 86%

Prospects for detecting a net photon circular polarization produced by decaying dark matter

et al. 2017

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If dark matter interactions with Standard Model particles are CP -violating, then dark matter annihilation/decay can produce photons with a net circular polarization. We consider the prospects for experimentally detecting evidence for such a circular polarization. We identify optimal models for dark matter interactions with the Standard Model, from the point of view of detectability of the net polarization, for the case of either symmetric or asymmetric dark matter. We find that, for symmetric dark matter, evidence for net polarization could be found by a search of the Galactic Center by an instrument sensitive to circular polarization with an efficiency-weighted exposure of at least 50000 cm 2 yr, provided the systematic detector uncertainties are constrained at the 1% level. Better sensitivity can be obtained in the case of asymmetric dark matter. We discuss the prospects for achieving the needed level of performance using possible detector technologies.

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“…At finite temperature, the situation is less clear. Although many interesting works apply the Gribov-Zwanziger approach to thermal scenarios [41][42][43][44][45][46], they all rely on the implicit assumption that the output of the Gribov-Zwanziger construction in such cases is given by the zero temperature Gribov-Zwanziger action taken over a compact (imaginary) time interval of length β = 1/T . Although natural, this assumption is far from obvious.…”

Section: Introductionmentioning

confidence: 99%

Gribov-Zwanziger type model action invariant under background gauge transformations

Kroff

Reinosa

2018

Phys. Rev. D

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We propose a Gribov-Zwanziger type model action for the Landau-DeWitt gauge that preserves, for any gauge group, the invariance under background gauge transformations. At zero temperature, and to one-loop accuracy, the model can be related to the Gribov no-pole condition. We apply the model to the deconfinement transition in SU(2) and SU(3) Yang-Mills theories and compare the predictions obtained with a single or with various (color dependent) Gribov parameters that can be introduced in the action without jeopardizing its background gauge invariance. The Gribov parameters associated to color directions orthogonal to the background can become negative, while keeping the background effective potential real. In some cases, the proper analysis of the transition requires the potential to be resolved in those regions.

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Dipole moment bounds on dark matter annihilation

Cited by 37 publications

References 48 publications

Gluon propagator in two-color dense QCD: Massive Yang-Mills approach at one loop

Gluon propagator in two-color dense QCD: Massive Yang-Mills approach at one loop

Prospects for detecting a net photon circular polarization produced by decaying dark matter

Gribov-Zwanziger type model action invariant under background gauge transformations

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