Results 91 to 100 of about 61,183 (280)
Minimal renormalizable simplified dark matter model with a pseudoscalar mediator [PDF]
, 2017 We consider a minimal renormalizable and gauge invariant dark matter (DM) model, in which the singlet fermion DM has only axial couplings to a new pseudoscalar mediator. The mixing between the pseudoscalar mediator and the standard model (SM) Higgs boson
S. Baek, P. Ko, Jinmian Li
semanticscholar +1 more source
Exploring Dark Photon Production and Kinetic Mixing Constraints in Heavy‐Ion Collisions
Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.ABSTRACT Vector U‐bosons, often referred to as “dark photons,” are potential candidates for mediating dark matter interactions. In this study, we outline a procedure to derive theoretical constraints on the upper bound of the kinetic mixing parameter ϵ2MU$$ {\upvarepsilon}^2\left({M}_U\right) $$ using dilepton data from heavy‐ion from SIS to RHIC ...
Adrian William Romero Jorge +3 more
wiley +1 more source
Probing the Pseudoscalar portal to Dark Matter via $\bar{b} b Z( \rightarrow \ell\ell) + E_{T} \hspace{-8mm}/\hspace{4mm}$: From the LHC to the Galactic Centre Excess [PDF]
, 2017 We propose a new search for Dark Matter at the LHC, characteristic of scenarios beyond the Standard Model with a pseudoscalar portal between the visible and dark sectors. This search, leading to a $\bar{b} b Z( \rightarrow \ell\ell) + E_{T} \hspace{-4mm}/
P. Tunney, J. No, M. Fairbairn
semanticscholar +1 more source
Nonlinear Vortex Dichroism in Chiral Molecules
Advanced Optical Materials, Volume 13, Issue 3, January 24, 2025.Chiral molecules are shown to absorb two photons from a linearly polarized Laguerre–Gaussian vortex beams at different rates depending on the sign and magnitude of orbital angular momentum: nonlinear vortex dichroism. This new form of nonlinear optical activity is shown to have many remarkable properties, including novel access to structural ...
Luke Cheeseman, Kayn A. Forbes
wiley +1 more source
European Physical Journal C: Particles and FieldsA search for a pseudoscalar a produced in association with a top-quark pair, or in association with a single top quark plus a W boson, with the pseudoscalar decaying into b-quarks ( $$a\rightarrow b\bar{b}$$ a → b b ¯ ), is performed using the full Run 2
ATLAS Collaboration
doaj +1 more source
Properties of flavour-singlet pseudoscalar mesons from lattice QCD
EPJ Web of Conferences, 2017 We report on the status of the determination of properties of flavour-singlet pseudoscalar mesons using Wilson twisted mass lattice QCD at maximal twist.
Urbach Carsten
doaj +1 more source
Global constraints on neutral-current generalized neutrino interactions
Journal of High Energy Physics, 2021 We study generalized neutrino interactions (GNI) for several neutrino processes, including neutrinos from electron-positron collisions, neutrino-electron scattering, and neutrino deep inelastic scattering.
F. J. Escrihuela +3 more
doaj +1 more source
Nπ states and the projection method for the nucleon axial and pseudoscalar form factors
Physical Review D, 2019 The RQCD collaboration proposed a projection method to remove the excited state contamination in lattice OCD calculations of nuclear form factors. The effectiveness of this method in removing the two-particle nucleon-pion-state contamination is examined ...
O. Bär
semanticscholar +1 more source
New exclusion limits on scalar and pseudoscalar axionlike particles from light shining through a wall [PDF]
, 2015 Physics beyond the Standard Model predicts the possible existence of new particles that can be searched at the low-energy frontier in the sub-eV range. The OSQAR photon regeneration experiment looks for ``light shining through a wall'' from the quantum ...
R. Ballou +15 more
semanticscholar +1 more source
Study of Semileptonic B⟶DPℓ+νℓ Decays Based on the SU(3) Flavor Symmetry
Advances in High Energy Physics, Volume 2025, Issue 1, 2025.Decays B⟶DPℓ+νℓ(ℓ = e, μ, τ) with the nonresonance, the charmed vector resonances, the charmed scalar resonances, and the charmed tensor resonances are explored by using the SU(3) flavor symmetry approach. Firstly, the decay amplitudes of different modes are related by the SU(3) flavor symmetry.
Ru-Min Wang +5 more
wiley +1 more source