Zobrazeno 1 - 10
of 116
pro vyhledávání: '"Ghosh, Avirup"'
Large-scale neutrino detectors currently under construction will have the unique ability to probe the annihilation of low-mass thermal-relic dark matter to neutrinos. This represents an essential test of the thermal freezeout paradigm. This raises th
Externí odkaz:
http://arxiv.org/abs/2412.02994
Autor:
Ghosh, Avirup, Ghosh, Deep
Among the very few available probes of the post-inflationary reheating epoch one is the spectrum of inflationary tensor perturbations which is affected by the Universe's equation of state during the reheating era. Contrary to the usual approach of as
Externí odkaz:
http://arxiv.org/abs/2411.02052
Publikováno v:
JCAP 08 (2023) 071
We consider a weakly interacting massive particle (WIMP) dark matter (DM) annihilating into all possible Standard Model (SM) particle pairs, including the SM neutrinos, via $s$-wave processes and derive the branching ratio independent upper limit on
Externí odkaz:
http://arxiv.org/abs/2212.09795
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:
JCAP09(2022)005
We consider a decaying scalar dark matter (DM) with mass $m_\chi$ in the range 10 GeV - 10 TeV and vary the branching ratios of all possible two-body SM final states (excluding and including $\nu\bar{\nu}$) in the range $0\%-100\%$ to derive constrai
Externí odkaz:
http://arxiv.org/abs/2204.06024
Publikováno v:
Phy Rev D (2022)
The Einstein- Gauss- Bonnet (EGB) gravity is an important modification of the Einstein theory of gravity and, for many gravitational phenomena, the Gauss- Bonnet (GB) correction term leads to drastic differences. In this paper, we study gravitational
Externí odkaz:
http://arxiv.org/abs/2108.11680
Autor:
Ghosh, Avirup
Dynamical evolution of black holes may be studied perturbatively in the membrane picture. We study the case of a body freely falling into a black hole, in the Rindler approximation. The motivation is to see if this process is accompanied by the induc
Externí odkaz:
http://arxiv.org/abs/2106.04620
Publikováno v:
Phys.Dark Univ. 33 (2021) 100855
In the light of the recently observed XENON1T electronic recoil (ER) data, we investigate the possibility of constraining the parameter space of a generic fermionic warm dark matter (WDM), decaying into a standard model (SM) neutrino and a photon. Th
Externí odkaz:
http://arxiv.org/abs/2103.14664
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