Results 51 to 60 of about 825,342 (148)

Electroweak-Skyrmion as asymmetric dark matter

Journal of High Energy Physics, 2022
We propose a scenario that the Electroweak-Skyrmion, a solitonic object made of the Higgs field and the electroweak gauge fields, is identified as an asymmetric dark matter.
Yu Hamada, Ryuichiro Kitano, Masafumi Kurachi   +2 more
doaj   +1 more source

Beyond the standard model with B and K physics

, 2003
In the first part of the talk the flavor physics input to models beyond the Standard Model is described. One specific example of such a new physics model is given: a model with bulk fermions in one non-factorizable extra dimension.
Grossman, Yuval
core   +4 more sources

A left-right mirror symmetric model: common origin of neutrino mass, baryon asymmetry and dark matter

Journal of High Energy Physics, 2020
I suggest a left-right mirror symmetric particle model as the natural and aes- thetic extension of the SM. As the left-right mirror symmetry breaking, the tiny neutrino mass is generated by the radiative mechanism, the baryon asymmetry through the lepto-
Wei-Min Yang
doaj   +1 more source

Looking Beyond the Standard Model through Precision Electroweak Physics

, 1996
The most important hint of physics beyond the Standard Model (SM) from the 1995 precision electroweak data is that the most precisely measured quantities, the total, leptonic and hadronic decay widths of the $Z$ and the effective weak mixing angle, $\sin^
Hagiwara, Kaoru
core   +1 more source

MeV neutrino dark matter: relic density, lepton flavour violation and electron recoil

Journal of High Energy Physics, 2019
Right-handed neutrinos with MeV to GeV mass are very promising candidates for dark matter (DM). Not only can they solve the missing satellite puzzle, the cusp-core problem of inner DM density profiles, and the too-big-to fail problem, i.e.
Juri Fiaschi, Michael Klasen, Miguel Vargas, Christian Weinheimer, Sybrand Zeinstra   +4 more
doaj   +1 more source

Heavy stable charged tracks as signatures of non-thermal dark matter at the LHC: a study in some non-supersymmetric scenarios

Journal of High Energy Physics, 2017
We consider two theoretical scenarios, each including a ℤ 2-odd sector and leading to an elementary dark matter candidate. The first one is a variant of the Type-III seesaw model where one lepton triplet is ℤ 2-odd, together with a heavy sterile neutrino.
Avirup Ghosh, Tanmoy Mondal, Biswarup Mukhopadhyaya   +2 more
doaj   +1 more source

Pseudo-majoron as light mediator of singlet scalar dark matter

Journal of High Energy Physics, 2017
In the singlet-triplet majoron model of neutrino mass, lepton number is spontaneously broken. If it is also softly broken, then a naturally light pseudoscalar particle η I exists.
Ernest Ma, Markos Maniatis
doaj   +1 more source

Relaxing cosmological neutrino mass bounds with unstable neutrinos

Journal of High Energy Physics, 2020
At present, cosmological observations set the most stringent bound on the neutrino mass scale. Within the standard cosmological model (ΛCDM), the Planck collaboration reports ∑m v < 0.12 eV at 95 % CL.
Miguel Escudero, Jacobo Lopez-Pavon, Nuria Rius, Stefan Sandner   +3 more
doaj   +1 more source

Cosmological relaxation through the dark axion portal

Journal of High Energy Physics, 2022
The dark axion portal is a coupling of an axion-like particle to a dark photon kinetically mixed with the visible photon. We show how this portal, when applied to the relaxion, can lead to cosmological relaxation of the weak scale using dark photon ...
Valerie Domcke, Kai Schmitz, Tevong You
doaj   +1 more source

Twin Higgs portal dark matter

Journal of High Energy Physics, 2021
Many minimal models of dark matter (DM) or canonical solutions to the hierarchy problem are either excluded or severely constrained by LHC and direct detection null results. In particular, Higgs Portal Dark Matter (HPDM) features a scalar coupling to the
David Curtin, Shayne Gryba
doaj   +1 more source