Zobrazeno 1 - 10
of 16 016
pro vyhledávání: '"beyond the Standard Model"'
Publikováno v:
Physics Letters B, Vol 859, Iss , Pp 139121- (2024)
We investigate the recently reported tt¯ excess by the CMS Collaboration within the framework of conventional Two-Higgs-Doublet Models (2HDMs). Considering all four types (I, II, X, and Y), we perform a comprehensive parameter space scan using the b
Externí odkaz:
https://doaj.org/article/abbf79f206544f818cbc0ae2e55eea85
Autor:
V.V. Vien
Publikováno v:
Physics Letters B, Vol 859, Iss , Pp 139132- (2024)
We suggest a neutrino mass matrix texture satisfying the μ−τ reflection symmetry in a B−L model with T7 symmetry by introducing additional singlet scalars and invoking the Type-I seesaw mechanism in which the hierarchical patterns of charged le
Externí odkaz:
https://doaj.org/article/25147edac43442baad680075ce0f701b
Publikováno v:
Physics Letters B, Vol 854, Iss , Pp 138746- (2024)
The leading-order contribution of a new boson to the muonic fine-structure anomaly, which refers to a discrepancy between the predicted transition energies and spectroscopic measurements of μ−90Zr, μ−120Sn, and μ−208Pb, is investigated. We c
Externí odkaz:
https://doaj.org/article/2d6651a01848447ba242e2491e4f8c07
Autor:
Francesco Loparco
Publikováno v:
Particles, Vol 7, Iss 1, Pp 161-178 (2024)
Flavour changing neutral current (FCNC) processes are described by loop diagrams in the Standard Model (SM), while in 331 models, based on the gauge group SU(3)C×SU(3)L×U(1)X, they are dominated by tree-level exchanges of a new heavy neutral gauge
Externí odkaz:
https://doaj.org/article/3d0e102a57794f00ab3d123b9c212bd3
Autor:
Alex Khaneles
Publikováno v:
Quantum Reports, Vol 6, Iss 1, Pp 110-119 (2024)
Photons are considered to be elementary bosons in the Standard Model. The assumption that photons are not elementary particles is assessed from an outlook of computational statistical mechanics. A prediction of variations in the shape of the blackbod
Externí odkaz:
https://doaj.org/article/563459ef6c484a4cb368c5c4a7b9587c
Autor:
Giorgio Arcadi
Publikováno v:
Frontiers in Physics, Vol 12 (2024)
We provide a short review of some aspects of dark matter (DM) production in non-standard cosmology. Considering the simplest Higgs portal model as a definite particle physics setup, we consider the impact on the parameter space corresponding to the c
Externí odkaz:
https://doaj.org/article/8a2c007005904b9f97fcf20fa090b0df
Publikováno v:
Physics Letters B, Vol 853, Iss , Pp 138648- (2024)
In this study, we explore the non-standard νν¯γγ couplings parametrized by dimension-seven operators via e+e−→νν¯γ process at the FCC-ee/CEPC and μ+μ−→νν¯γ process at the Muon Colliders. For the detailed Monte Carlo simulation,
Externí odkaz:
https://doaj.org/article/8e422b4de98347d89e1812879f0415c0
Autor:
S. Carbajal, A. M. Gago
Publikováno v:
Frontiers in Physics, Vol 12 (2024)
We evaluate the potential of the DUNE near detector (DUNEND) for establishing bounds for heavy neutral leptons (HNLs). This is achieved by studying how the presence of HNLs affects the production rates of active neutrinos, therefore creating a defici
Externí odkaz:
https://doaj.org/article/a419a57941b044c2a80c68ea2159bfda
Autor:
Giancarlo Rossi
Publikováno v:
Letters in High Energy Physics, Vol 2024, Iss 1 (2024)
In this work, we describe the construction of a particle physics model where chiral symmetry, broken at the UV scale by “irrelevant” d > 4 operators, is recovered at low energy. In the critical, chiral symmetric theory, masses of elementary degre
Externí odkaz:
https://doaj.org/article/3225203b7bcb457495ef8bcf6d6fe5b1
Autor:
Siavash Neshatpour
Publikováno v:
Symmetry, Vol 16, Iss 8, p 946 (2024)
In this write-up, we provide an overview of the existing theoretical framework concerning rare kaon decays, with a particular emphasis on flavour-changing neutral current processes. These decays offer crucial indirect pathways for investigating short
Externí odkaz:
https://doaj.org/article/1800c8f6614d4f40b3789d509faed812