scholarly journals Dark matter blind spots at one-loop

2019 ◽  
Vol 2019 (3) ◽  
Author(s):  
Tao Han ◽  
Hongkai Liu ◽  
Satyanarayan Mukhopadhyay ◽  
Xing Wang
Keyword(s):  
Dark Matter ◽  
Blind Spots

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

scholarly journals Blind spots for neutralino dark matter in the NMSSM

2016 ◽  
Vol 2016 (3) ◽  
Author(s):  
Marcin Badziak ◽  
Marek Olechowski ◽  
Paweł Szczerbiak
Keyword(s):  
Dark Matter ◽  
Blind Spots

scholarly journals Pseudo-Goldstone dark matter: gravitational waves and direct-detection blind spots

2020 ◽  
Vol 2020 (10) ◽  
Author(s):  
Tommi Alanne ◽  
Nico Benincasa ◽  
Matti Heikinheimo ◽  
Kristjan Kannike ◽  
Venus Keus ◽  
...  
Keyword(s):  
Dark Matter ◽  
Gravitational Wave ◽  
Cross Section ◽  
Direct Detection ◽  
Big Bang ◽  
First Order ◽  
First Order Phase Transition ◽  
The Standard Model ◽  
First Order Phase ◽  
Blind Spots

Abstract Pseudo-Goldstone dark matter is a thermal relic with momentum-suppressed direct-detection cross section. We study the most general model of pseudo-Goldstone dark matter arising from the complex-singlet extension of the Standard Model. The new U(1) symmetry of the model is explicitly broken down to a CP-like symmetry stabilising dark matter. We study the interplay of direct-detection constraints with the strength of cosmic phase transitions and possible gravitational-wave signals. While large U(1)-breaking interactions can generate a large direct-detection cross section, there are blind spots where the cross section is suppressed. We find that sizeable cubic couplings can give rise to a first-order phase transition in the early universe. We show that there exist regions of the parameter space where the resulting gravitational-wave signal can be detected in future by the proposed Big Bang Observer detector.

scholarly journals Doubly blind spots in scalar dark matter models

2019 ◽  
Vol 100 (5) ◽  
Author(s):  
Wolfgang Altmannshofer ◽  
Brian Maddock ◽  
Stefano Profumo
Keyword(s):  
Dark Matter ◽  
Blind Spots

scholarly journals Doublet–singlet model and unitarity

2016 ◽  
Vol 31 (01) ◽  
pp. 1650013 ◽  
Author(s):  
G. Cynolter ◽  
J. Kovács ◽  
E. Lendvai
Keyword(s):  
Dark Matter ◽  
Mass Spectrum ◽  
Scattering Amplitudes ◽  
Standard Model ◽  
Dark Matter Candidate ◽  
Particle Scattering ◽  
Gauge Bosons ◽  
Yukawa Couplings ◽  
The Standard Model ◽  
Blind Spots

We study the renormalizable singlet–doublet fermionic extension of the Standard Model (SM). In this model, the new vector-like fermions couple to the gauge bosons and to the Higgs via new Yukawa couplings that allow for nontrivial mixing in the new sector, providing a stable, neutral dark matter candidate. Approximate analytic formulae are given for the mass spectrum around the blind spots, where the dark matter candidate coupling to h or Z vanishes. We calculate the two particle scattering amplitudes in the model, impose the perturbative unitarity constraints and establish bounds on the Yukawa couplings.

scholarly journals Unblinding the dark matter blind spots

2017 ◽  
Vol 2017 (2) ◽  
Author(s):  
Tao Han ◽  
Felix Kling ◽  
Shufang Su ◽  
Yongcheng Wu
Keyword(s):  
Dark Matter ◽  
Blind Spots
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