Non-adiabatic evolution of dark sector in the presence of U(1)<sub>L<sub>μ</sub> </sub> – <sub>L<sub>τ</sub> </sub> gauge symmetry
نویسندگان
چکیده
Abstract In secluded dark sector scenario, the connection between visible and can be established through a portal coupling its presence opens up possibility of non-adiabatic evolution sector. To study sector, we have considered U(1) L μ – τ ⊗ X extension standard model (SM). Here is charged only under gauge symmetry whereas SM fields are singlet this symmetry. Due to tree-level kinetic mixing bosons, evolves non-adiabatically thermal equilibrium governed by coupling. Depending on values (ϵ), ( g ), mass matter m χ ) vector boson Z' temperature as well various non-equilibrium stages in detail. Furthermore also investigated constraints parameters from laboratory astrophysical searches. We found that parameter space for significantly constrained ≲ 100 MeV observations beam dump experiments, stellar cooling etc. The relic density satisfied region our consistent with bounds direct detection, self interaction (SIDM) ratio r ≡ / = 10 -3 these will more relaxed larger . However measurement diffuse γ-ray background flux cosmic microwave (CMB) anisotropy strongest -1 smaller , they not significant.
منابع مشابه
the impact of e-readiness on ec success in public sector in iran the impact of e-readiness on ec success in public sector in iran
acknowledge the importance of e-commerce to their countries and to survival of their businesses and in creating and encouraging an atmosphere for the wide adoption and success of e-commerce in the long term. the investment for implementing e-commerce in the public sector is one of the areas which is focused in government‘s action plan for cross-disciplinary it development and e-readiness in go...
effect of sub-grid scales on large eddy simulation of particle deposition in a turbulent channel flow
چکیده ندارد.
15 صفحه اولStructure Symmetry Determination and Magnetic Evolution in Sr<sub>2</sub>Ir<sub>1−<em>x</em></sub>Rh<sub><em>x</em></sub>O<sub>4</sub>
متن کامل
Symmetry breaking of gauge theories down to Abelian sub-groups
I re-derive the lowest order effective Lagrangian for electro-weak symmetry breaking without the use of Goldstone’s theorem for spontaneously broken global symmetries and without the assumption of a custodial symmetry. I consider the breaking of a local symmetry with gauge group G down to an Abelian sub-group K and construct a gauge-invariant functional with one free parameter v, such that v = ...
متن کاملformation and evolution of regional organizations: the case study of the economic cooperation organization (eco)
abstract because of the many geopolitical, geo economical and geo strategically potentials and communicational capabilities of eco region, members can expand the convergence and the integration in base of this organization that have important impact on members development and expanding peace in international and regional level. based on quality analyzing of library findings and experts interv...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2022
ISSN: ['1475-7516', '1475-7508']
DOI: https://doi.org/10.1088/1475-7516/2022/05/019