Zobrazeno 1 - 10
of 125
pro vyhledávání: '"Busoni , Giorgio"'
Publikováno v:
JCAP 07 (2024) 051
We present an improved treatment for the scattering of heavy dark matter from the ion constituents of a white dwarf. In the heavy dark matter regime, multiple collisions are required for the dark matter to become gravitationally captured. Our treatme
Externí odkaz:
http://arxiv.org/abs/2404.16272
Publikováno v:
JCAP 04 (2024) 006
The capture of dark matter, and its subsequent annihilation, can heat old, isolated neutron stars. In order for kinetic heating to be achieved, the captured dark matter must undergo sufficient scattering to deposit its kinetic energy in the star. We
Externí odkaz:
http://arxiv.org/abs/2312.11892
We discuss the possibility of interpreting the recent experimental hints, in favour of a 95 GeV resonance, with extensions of the Standard Model featuring an extra Higgs doublet and SM scalar (2HDM+s) or pseudoscalar singlet (2HDM+a). The possibility
Externí odkaz:
http://arxiv.org/abs/2311.14486
Autor:
Busoni, Giorgio
The extreme conditions in Neutron Stars make them ideal test facilities for fundamental interactions. A Neutron Star can capture Dark Matter via scattering. As a result of the scattering, Dark Matter kinetic energy is transferred to the star. An obse
Externí odkaz:
http://arxiv.org/abs/2201.00048
Autor:
Anzuini, Filippo, Bell, Nicole F., Busoni, Giorgio, Motta, Theo F., Robles, Sandra, Thomas, Anthony W., Virgato, Michael
Publikováno v:
JCAP 11 (2021) 056; Erratum: JCAP 04 (2024) E02
We consider the capture of dark matter (DM) in neutron stars via scattering on hadronic targets, including neutrons, protons and hyperons. We extend previous analyses by including momentum dependent form factors, which account for hadronic structure,
Externí odkaz:
http://arxiv.org/abs/2108.02525
Autor:
Bell, Nicole F., Busoni, Giorgio, Ramirez-Quezada, Maura E., Robles, Sandra, Virgato, Michael
Publikováno v:
JCAP 10 (2021) 083
White dwarfs, the most abundant stellar remnants, provide a promising means of probing dark matter (DM) interactions, complimentary to terrestrial searches. The scattering of dark matter from stellar constituents leads to gravitational capture, with
Externí odkaz:
http://arxiv.org/abs/2104.14367
Autor:
Bell, Nicole F., Busoni, Giorgio, Motta, Theo F., Robles, Sandra, Thomas, Anthony W., Virgato, Michael
Publikováno v:
Phys. Rev. Lett. 127, 111803 (2021); Phys. Rev. Lett. 129, 239902(E) (2022)
We outline two important effects that are missing from most evaluations of the dark matter capture rate in neutron stars. As dark matter scattering with nucleons in the star involves large momentum transfer, nucleon structure must be taken into accou
Externí odkaz:
http://arxiv.org/abs/2012.08918
Publikováno v:
JCAP 03 (2021) 086
Neutron stars harbour matter under extreme conditions, providing a unique testing ground for fundamental interactions. We recently developed an improved treatment of dark matter (DM) capture in neutron stars that properly incorporates many of the imp
Externí odkaz:
http://arxiv.org/abs/2010.13257
Publikováno v:
JCAP 09 (2020) 028
Neutron stars provide a cosmic laboratory to study the nature of dark matter particles and their interactions. Dark matter can be captured by neutron stars via scattering, where kinetic energy is transferred to the star. This can have a number of obs
Externí odkaz:
http://arxiv.org/abs/2004.14888
In this work we compare the current experimental LHC limits of the 2HDM $+$ scalar and pseudoscalar for the $t \bar{t}$, mono-$Z$ and mono-$h$ signatures and forecast the reach of future LHC upgrades for the mono-$Z$ channel. Furthermore, we comment
Externí odkaz:
http://arxiv.org/abs/2001.10540