Zobrazeno 1 - 10
of 89
pro vyhledávání: '"Mukhopadhyay, Satyanarayan"'
There is a significant uncertainty in the prediction of atmospheric muon neutrino and anti-neutrino flux ratio using different flux models, especially at higher energies. We study the prospects of experimentally measuring this flux ratio as a functio
Externí odkaz:
http://arxiv.org/abs/2409.20231
Publikováno v:
Physical Review D 109, 083541 (2024)
The initial density of dark matter (DM) particles, otherwise secluded from the standard model (SM), may be generated at reheating, with an initial temperature ratio for internal thermalizations, $\xi_i=T_{\rm DM,i}/T_{\rm SM,i}$. This scenario necess
Externí odkaz:
http://arxiv.org/abs/2312.12985
Publikováno v:
Physical Review D 106, 103515 (2022)
An internally thermalized dark matter (DM) with only gravitational interaction with the standard model (SM) particles at low temperatures, may undergo number-changing self-scatterings in the early Universe, eventually freezing out to the observed DM
Externí odkaz:
http://arxiv.org/abs/2206.11046
Publikováno v:
Phys.Rev.D 106 (2022) 4, 043519
Post-inflationary reheating is a widely discussed mechanism for non-thermal production of dark matter (DM). In this scenario the momentum distribution of the produced DM particles is usually taken to be the one obtained at reheating, red-shifted at l
Externí odkaz:
http://arxiv.org/abs/2205.03440
Publikováno v:
Phys.Rev.D 104 (2021) 12, 123543
The cosmology of a standard model (SM) gauge singlet complex scalar dark matter (DM), stabilized by a reflection symmetry, is studied including all renormalizable interactions that preserve the reflection symmetry but can break the larger global U(1)
Externí odkaz:
http://arxiv.org/abs/2103.14009
Publikováno v:
Eur. Phys. J. C (2021) 81:1038
We point out qualitatively different possibilities on the role of CP-conserving processes in generating cosmological particle-antiparticle asymmetries, with illustrative examples from models in leptogenesis and asymmetric dark matter production. In p
Externí odkaz:
http://arxiv.org/abs/2103.03650
Publikováno v:
JHEP03(2021)133
Using the upper bound on the inelastic reaction cross-section implied by S-matrix unitarity, we derive the thermally averaged maximum dark matter (DM) annihilation rate for general $k \rightarrow 2$ number-changing reactions, with $k \geq 2$, taking
Externí odkaz:
http://arxiv.org/abs/2010.09762
Publikováno v:
JHEP 08 (2020), 149
We show that a general semi-annihilation scenario, in which a pair of dark matter (DM) particles annihilate to an anti-DM, and an unstable state that can mix with or decay to standard model states, can lead to particle anti-particle asymmetry in the
Externí odkaz:
http://arxiv.org/abs/2004.07705
Publikováno v:
JHEP 1903 (2019) 080
We evaluate the impact of one-loop electroweak corrections to the spin-independent dark matter (DM) scattering cross-section with nucleons ($\sigma_{\rm SI}$), in models with a so-called blind spot for direct detection, where the leading-order predic
Externí odkaz:
http://arxiv.org/abs/1810.04679
Publikováno v:
Phys. Rev. D 98, 035026 (2018)
In a large class of scenarios, dark matter (DM) particles that belong to a multiplet of the standard model (SM) weak interactions are challenging to probe in direct detection experiments due to loop-suppressed cross-sections. Direct production at col
Externí odkaz:
http://arxiv.org/abs/1805.00015