Results 61 to 70 of about 45,250 (232)

B s(d) − B ¯ $$ \overline{B} $$ s(d) mixing and B s → μ + μ − decay in the NMSSM with the Flavour Expansion Theorem

open access: yesJournal of High Energy Physics, 2019
In this paper, motivated by the observation that the Standard Model predictions are now above the experimental data for the mass difference ΔM s(d), we perform a detailed study of B s(d) − B ¯ $$ \overline{B} $$ s(d) mixing and B s → μ + μ − decay in the
Quan-Yi Hu   +3 more
doaj   +1 more source

Vector meson spectral function in a dynamical AdS/QCD model

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
By using gauge/gravity duality, we calculate the spectral function of the heavy vector mesons with the presence of an intense magnetic field in a hot and dense medium.
Yan-Qing Zhao, Defu Hou
doaj   +1 more source

Leptonic Scalars versus Scalar Leptons [PDF]

open access: yesProceedings of Corfu Summer Institute 2019 "School and Workshops on Elementary Particle Physics and Gravity" — PoS(CORFU2019), 2020
The notion of scalars having lepton number, i.e. leptonic scalars, is discussed without supersymmetry, where scalar leptons reside. It is shown how dark parity comes from lepton parity, as well as its possible origin from grand unification. Two specific phenomenological applications to dark matter are described.
openaire   +1 more source

Dualist Approaches to Mental Causation

open access: yesPhilosophy Compass, Volume 21, Issue 3, May/June 2026.
ABSTRACT Dualists take the mind to be non‐physical. Their position is widely taken to preclude causal interactions between the mind and the body. Not only do causal interactions across the physical and non‐physical boundary appear mysterious, the physical realm also appears to be self‐sufficient in a way that leaves no room for non‐physical causes.
Bram Vaassen
wiley   +1 more source

The first second of leptons [PDF]

open access: yes, 2011
Stuke M. The first second of leptons. Bielefeld (Germany): Bielefeld University; 2011.We study the influence of lepton asymmetries on the evolution of the early Universe. The lepton asymmetry l is poorly constrained by observations and might be orders of
Stuke, Maik
core   +1 more source

RD*,RK* $$ {R}_{D^{\left(*\right)}},{R}_{K^{\left(*\right)}} $$ and neutrino mass in the 2HDM-III with right-handed neutrinos

open access: yesJournal of High Energy Physics, 2018
Given that the two-Higgs-doublet model of type III (2HDM-III) has the potential to address the RD* $$ {R}_{D^{\left(*\right)}} $$ anomalies while the resolution to the RK* $$ {R}_{K^{\left(*\right)}} $$ deficits requires new degrees of freedom within ...
Shao-Ping Li   +3 more
doaj   +1 more source

The decomposition of neutron-antineutron oscillation operators

open access: yesJournal of High Energy Physics, 2023
We study the systematic decomposition of the dimension nine neutron-antineutron oscillation operators at tree and one-loop levels. We discuss the topologies’ generation and the assignment of the chiral quarks.
Shao-Long Chen, Yu-Qi Xiao
doaj   +1 more source

Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the String‐Theoretical Swampland Programme

open access: yesFortschritte der Physik, Volume 74, Issue 4, April 2026.
Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley   +1 more source

Mass splitting and spin alignment for $$\phi $$ ϕ mesons in a magnetic field in NJL model

open access: yesEuropean Physical Journal C: Particles and Fields
Based on the Nambu–Jona–Lasinio (NJL) model, we develop a framework for calculating the spin alignment of vector mesons and applied it to study $$\phi $$ ϕ mesons in a magnetic field.
Xin-Li Sheng   +3 more
doaj   +1 more source

Machine learning of pair-contact process with diffusion

open access: yesScientific Reports, 2022
The pair-contact process with diffusion (PCPD), a generalized model of the ordinary pair-contact process (PCP) without diffusion, exhibits a continuous absorbing phase transition.
Jianmin Shen   +5 more
doaj   +1 more source

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