scholarly journals Direct detection limits on heavy dark matter

2020 ◽  
Vol 102 (12) ◽  
Author(s):  
Michael Clark ◽  
Amanda Depoian ◽  
Bahaa Elshimy ◽  
Abigail Kopec ◽  
Rafael F. Lang ◽  
...  
Keyword(s):  
Dark Matter ◽  
Direct Detection ◽  
Detection Limits

scholarly journals Informing dark matter direct detection limits with the ARTEMIS simulations

2020 ◽  
Vol 2020 (11) ◽  
pp. 016-016
Author(s):  
Robert Poole-McKenzie ◽  
Andreea S. Font ◽  
Billy Boxer ◽  
Ian G. McCarthy ◽  
Sergey Burdin ◽  
...  
Keyword(s):  
Dark Matter ◽  
Direct Detection ◽  
Detection Limits

scholarly journals Erratum: Direct detection limits on heavy dark matter [Phys. Rev. D 102 , 123026 (2020)]

2021 ◽  
Vol 104 (12) ◽  
Author(s):  
Michael Clark ◽  
Amanda Depoian ◽  
Bahaa Elshimy ◽  
Abigail Kopec ◽  
Rafael F. Lang ◽  
...  
Keyword(s):  
Dark Matter ◽  
Direct Detection ◽  
Detection Limits

scholarly journals Exploring direct detection suppressed regions in a simple 2-scalar mediator model of scalar dark matter

2021 ◽  
Vol 81 (5) ◽  
Author(s):  
Jérôme Claude ◽  
Stephen Godfrey
Keyword(s):  
Dark Matter ◽  
Simple Model ◽  
Standard Model ◽  
Parameter Space ◽  
Cross Sections ◽  
Direct Detection ◽  
Detection Limits ◽  
Interference Effects ◽  
The Standard Model ◽  
Relic Abundance

AbstractWe explore regions of parameter space that give rise to suppressed direct detection cross sections in a simple model of scalar dark matter with a scalar portal that mixes with the standard model Higgs. We found that even this simple model allows considerable room in the parameter space that has not been excluded by direct detection limits. A number of effects leading to this result have been previously noted. Our main new result explores interference effects between different contributions to DM annihilation when the DM mass is larger than the scalar portal mass. New annihilation channels open up and the parameters of the model need to compensate to give the correct DM relic abundance, resulting in smaller direct detection cross sections. We find that even in a very simple model of DM there are still sizeable regions of parameter space that are not ruled out by experiment.

scholarly journals t − b − τ Yukawa unification in non-holomorphic MSSM

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
Yaşar Hiçyılmaz
Keyword(s):  
Dark Matter ◽  
Yukawa Coupling ◽  
Direct Detection ◽  
Detection Limits ◽  
Susy Breaking ◽  
The Third ◽  
Gut Scale ◽  
Yukawa Unification ◽  
Relic Abundance

Abstract We show that in the CMSSM with the non-holomorphic soft SUSY breaking terms, the Yukawa coupling unification of the third family fermions at the GUT scale, called t − b − τ Yukawa unification (YU), is possible under the recent collider and Dark Matter results. The YU parameter can also be found Rtbτ≈ 1, called perfect unification. We find that the squark masses exceed 3 TeV while the stau can be considerably lighter. In the case of YU, the tan β is in the interval [46,55]. We obtain bino-like dark matter (DM) of mass in the range of 0.6 TeV ≲ $$ {m}_{\upchi_1^0} $$ m χ 1 0 ≲ 1.3 TeV where the recent Dark Matter direct detection limits are also satisfied. We also identify A-resonance solutions which reduce the relic abundance of LSP neutralino down to the ranges compatible with the current Planck measurements.

scholarly journals Split-SUSY dark matter in light of direct detection limits

2011 ◽  
Vol 706 (1) ◽  
pp. 72-76 ◽  
Author(s):  
Junjie Cao ◽  
Wenyu Wang ◽  
Jin Min Yang
Keyword(s):  
Dark Matter ◽  
Direct Detection ◽  
Detection Limits

scholarly journals First Direct Detection Limits on Sub-GeV Dark Matter from XENON10

2012 ◽  
Vol 109 (2) ◽  
Author(s):  
Rouven Essig ◽  
Aaron Manalaysay ◽  
Jeremy Mardon ◽  
Peter Sorensen ◽  
Tomer Volansky
Keyword(s):  
Dark Matter ◽  
Direct Detection ◽  
Detection Limits

scholarly journals Dark matter in anomaly-free gauge extensions

2018 ◽  
Vol 5 (4) ◽  
Author(s):  
Martin Bauer ◽  
Sascha Diefenbacher ◽  
Tilman Plehn ◽  
Michael Russell ◽  
Daniel A. Camargo
Keyword(s):  
Dark Matter ◽  
Shape Analysis ◽  
Search Strategy ◽  
Direct Detection ◽  
Detection Limits ◽  
Mass Generation ◽  
Mixing Angle ◽  
Consistent Model ◽  
Relic Density ◽  
Scalar Mode

A consistent model for vector mediators to dark matter needs to be anomaly-free and include a scalar mode from mass generation. For the leading U(1) extensions we review the structure and constraints, including kinetic mixing at loop level. The thermal relic density suggests that the vector and scalar masses are similar. For the LHC we combine a \boldsymbol{Z'}𝐙′ shape analysis with mono-jets. For the latter, we find that a shape analysis offers significant improvement over existing cut-and-count approaches. Direct detection limits strongly constrain the kinetic mixing angle and we propose a \boldsymbol{\ell^+\ell^-\met} search strategy based on the scalar mediator.

scholarly journals The impact of inelastic self-interacting dark matter on the dark matter structure of a Milky Way halo

2020 ◽  
Author(s):  
Kun Ting Eddie Chua ◽  
Karia Dibert ◽  
Mark Vogelsberger ◽  
Jesús Zavala
Keyword(s):  
Dark Matter ◽  
High Speed ◽  
Cold Dark Matter ◽  
Milky Way ◽  
Direct Detection ◽  
Major Axis ◽  
Inelastic Collisions ◽  
Axis Ratio ◽  
Lower Velocity ◽  
The Impact

Abstract We study the effects of inelastic dark matter self-interactions on the internal structure of a simulated Milky Way (MW)-size halo. Self-interacting dark matter (SIDM) is an alternative to collisionless cold dark matter (CDM) which offers a unique solution to the problems encountered with CDM on sub-galactic scales. Although previous SIDM simulations have mainly considered elastic collisions, theoretical considerations motivate the existence of multi-state dark matter where transitions from the excited to the ground state are exothermic. In this work, we consider a self-interacting, two-state dark matter model with inelastic collisions, implemented in the Arepo code. We find that energy injection from inelastic self-interactions reduces the central density of the MW halo in a shorter timescale relative to the elastic scale, resulting in a larger core size. Inelastic collisions also isotropize the orbits, resulting in an overall lower velocity anisotropy for the inelastic MW halo. In the inner halo, the inelastic SIDM case (minor-to-major axis ratio s ≡ c/a ≈ 0.65) is more spherical than the CDM (s ≈ 0.4), but less spherical than the elastic SIDM case (s ≈ 0.75). The speed distribution f(v) of dark matter particles at the location of the Sun in the inelastic SIDM model shows a significant departure from the CDM model, with f(v) falling more steeply at high speeds. In addition, the velocity kicks imparted during inelastic collisions produce unbound high-speed particles with velocities up to 500 km s−1 throughout the halo. This implies that inelastic SIDM can potentially leave distinct signatures in direct detection experiments, relative to elastic SIDM and CDM.

scholarly journals Generalized blind spots for dark matter direct detection in the 2HDM

2020 ◽  
Vol 2020 (2) ◽  
Author(s):  
M. E. Cabrera ◽  
J. A. Casas ◽  
A. Delgado ◽  
S. Robles
Keyword(s):  
Dark Matter ◽  
Direct Detection ◽  
Blind Spots
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