Zobrazeno 1 - 10
of 558
pro vyhledávání: '"Pran Nath"'
Autor:
Pran Nath, Jinzheng Li
Publikováno v:
Letters in High Energy Physics, Vol 2024, Iss 1 (2024)
A variety of possibilities exist for dark matter aside from WIMPS, such as hidden sector dark matter. We discuss the synchronous thermal evolution of visible and hidden sectors and show that the density of thermal relics can change O(100%) and ∆Nef
Externí odkaz:
https://doaj.org/article/1444460a98f14e65938d2acaa9fd7e20
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 3, Pp 1-33 (2023)
Abstract Hidden sectors are ubiquitous in supergravity theories, in strings and in branes. Well motivated models such as the Stueckelberg hidden sector model could provide a candidate for dark matter. In such models, the hidden sector communicates wi
Externí odkaz:
https://doaj.org/article/bb76b60e37884c7491c0c033e715613b
Autor:
Amin Aboubrahim, Pran Nath
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 9, Pp 1-25 (2022)
Abstract An analysis of a tower of hidden sectors coupled to each other, with one of these hidden sectors coupled to the visible sector, is given and the implications of such couplings on physics in the visible sector are investigated. Thus the analy
Externí odkaz:
https://doaj.org/article/63a3a192b3e7400e857146b1fcaf520e
Autor:
Pran Nath
Publikováno v:
Entropy, Vol 26, Iss 2, p 110 (2024)
While the standard model accurately describes data at the electroweak scale without the inclusion of gravity, beyond the standard model, physics is increasingly intertwined with gravitational phenomena and cosmology. Thus, the gravity-mediated breaki
Externí odkaz:
https://doaj.org/article/0b76fe0152c2424dbc405f726eca20e7
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 12, Pp 1-30 (2021)
Abstract Analysis of EDGES data shows an absorption signal of the redshifted 21-cm line of atomic hydrogen at z ∼ 17 which is stronger than expected from the standard ΛCDM model. The absorption signal interpreted as brightness temperature T 21 of
Externí odkaz:
https://doaj.org/article/00c3fa942e6c4339b97c8f2fb8e33cfc
Publikováno v:
Physics Letters B, Vol 834, Iss , Pp 137454- (2022)
We propose an explanation to the new W mass measurement recently reported by the CDF collaboration, which is larger than the standard model expectation by about 7 standard deviations. To alleviate the tensions that are imposed on the electroweak sect
Externí odkaz:
https://doaj.org/article/bc7d81c3d62f4cfbaa8e9ebcf1ed8192
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 8, Pp 1-17 (2021)
Abstract It is shown that a decaying neutralino in a supergravity unified framework is a viable candidate for dark matter. Such a situation arises in the presence of a hidden sector with ultraweak couplings to the visible sector where the neutralino
Externí odkaz:
https://doaj.org/article/d75d9046047849cbb2e6a9efb09f92db
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 6, Pp 1-26 (2021)
Abstract We investigate the Yukawa coupling unification for the third generation in a class of SO(10) unified models which are consistent with the 4.2 σ deviation from the standard model of the muon g − 2 seen by the Fermilab experiment E989. A re
Externí odkaz:
https://doaj.org/article/b9c49d6eca444619993049d86764c65c
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 6, Pp 1-34 (2021)
Abstract An analysis of sub-MeV dark photon as dark matter is given which is achieved with two hidden sectors, one of which interacts directly with the visible sector while the second has only indirect coupling with the visible sector. The formalism
Externí odkaz:
https://doaj.org/article/8adf03075e084311bae42f69eeeca99e
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 1, Pp 1-39 (2021)
Abstract We consider a class of unified models based on the gauge group SO(10) which with appropriate choice of Higgs representations generate in a natural way a pair of light Higgs doublets needed to accomplish electroweak symmetry breaking. In this
Externí odkaz:
https://doaj.org/article/cd528c4ce86743e5b4ad6a25086c17fd