Zobrazeno 1 - 10
of 35 215
pro vyhledávání: '"neutrino masses"'
Lepton-number-violating interactions occur in the Standard Model Effective Field Theory (SMEFT) at odd dimensions starting from the dimension-5 Weinberg operator. Although the operators at dimension-7 and higher are more suppressed by the heavy new s
Externí odkaz:
http://arxiv.org/abs/2412.14268
Heavy right-handed neutrinos are highly motivated due to their connection with the origin of neutrino masses via the seesaw mechanism. If the right-handed neutrino Majorana mass is at or below the weak scale, direct experimental discovery of these st
Externí odkaz:
http://arxiv.org/abs/2411.07294
A theoretical framework based on a spontaneously broken $Z_4$ symmetry is proposed to generate neutrino masses via the inverse seesaw mechanism and to facilitate dark matter production through a freeze-in scenario. The model introduces right-handed n
Externí odkaz:
http://arxiv.org/abs/2412.15672
In the incoming years, cosmological surveys aim at measuring the sum of neutrino masses $\Sigma m_\nu$, complementing the determination of their mass ordering from laboratory experiments. In order to assess the full potential of large-scale structure
Externí odkaz:
http://arxiv.org/abs/2412.04959
Scenarios for secluded WIMP dark matter models have been extensively studied in simplified versions. This paper shows a complete UV realization of a secluded WIMP dark matter model with an extra Abelian gauge symmetry that includes two-component dark
Externí odkaz:
http://arxiv.org/abs/2412.02027
Autor:
Denton, Peter B., Kini, Yves
A nearby supernova will carry an unprecedented wealth of information about astrophysics, nuclear physics, and particle physics. Because supernova are fundamentally neutrino driven phenomenon, our knowledge about neutrinos -- particles that remain qui
Externí odkaz:
http://arxiv.org/abs/2411.13634
We investigate a dark matter model that couples to the standard model through a one-loop interaction with neutrinos, where the mediator particles also generate neutrino masses. We perform a global fit that incorporates dark matter relic abundance, pr
Externí odkaz:
http://arxiv.org/abs/2411.03470
Autor:
Mathai, Arak M., Haubold, Hans J.
The neutrino sector of the seesaw-modified Standard Model is investigated under the anarchy principle. The anarchy principle leading to the seesaw ensemble is studied analytically with tools of random matrix theory. The probability density function i
Externí odkaz:
http://arxiv.org/abs/2411.08517
Autor:
Kang, Sin Kyu, Okada, Hiroshi
We propose a novel framework that addresses three critical issues: tiny neutrino masses and mixing, dark matter, and the strong CP problem. Our model extends the Peccei-Quinn (PQ) symmetry by incorporating modular $S_3$ symmetry to specifically addre
Externí odkaz:
http://arxiv.org/abs/2408.14942
The radiative seesaw model with gauged $\mathrm{U(1)}_{B-L}\times\mathbb{Z}_2$ extension is a well-motivated scenario which gives consistent predictions of active neutrino masses and the abundance of dark matter. Majorana masses of right-handed neutr
Externí odkaz:
http://arxiv.org/abs/2410.22835