Results 81 to 90 of about 51,008 (236)

Pseudoscalar Field as a Possible Candidate for Phantom Field

open access: yesAdvances in High Energy Physics, Volume 2025, Issue 1, 2025.
We demonstrate the existence of a single pseudoscalar (PS) field in the mathematically backed and parity‐preserving modifications of the standard Stückelberg formalism (SSF) in the context of the Lagrangian formulation of the (i) two (1 + 1)‐dimensional (2D) massive Abelian 1‐form gauge theory, (ii) three (2 + 1)‐dimensional (3D) massive Abelian 2‐form
E. Harikumar, R. P. Malik, Burak Bilki
wiley   +1 more source

Search for vector-like leptons with long-lived particle decays in the CMS muon system in proton-proton collisions at $$\sqrt{\text{s}}$$ = 13 TeV

open access: yesJournal of High Energy Physics
A first search is presented for vector-like leptons (VLLs) exclusively decaying into a light long-lived pseudoscalar boson and a standard model τ lepton.
The CMS collaboration   +2384 more
doaj   +1 more source

Search for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state with two b quarks and two τ leptons in proton–proton collisions at s=13TeV

open access: yesPhysics Letters B, 2018
A search for an exotic decay of the Higgs boson to a pair of light pseudoscalar bosons is performed for the first time in the final state with two b quarks and two τ leptons. The search is motivated in the context of models of physics beyond the standard
A.M. Sirunyan   +2300 more
doaj   +1 more source

Bounds on very weakly interacting ultra light scalar and pseudoscalar dark matter from quantum gravity

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
In this paper we consider very weakly interacting and ultra light scalar and pseudoscalar dark matter candidates. We show that quantum gravity has important implications for such models and that the masses of the singlet scalar and pseudoscalar fields ...
Xavier Calmet, Folkert Kuipers
doaj   +1 more source

Mixing of Pseudoscalar Mesons [PDF]

open access: yesPhysica Scripta, 2002
21 pages, 6 figures, Proc.
Feldmann, Th., Kroll, P.
openaire   +2 more sources

Modified 3D Massive Abelian 2‐Form Theory With a Single Pseudoscalar Field as a Phantom Field: BRST Approach

open access: yesAdvances in High Energy Physics, Volume 2025, Issue 1, 2025.
We obtain the off‐shell nilpotent Becchi–Rouet–Stora–Tyutin (BRST) and anti‐BRST symmetry transformations (corresponding to the infinitesimal classical gauge symmetry transformations) for the modified massive three (2 + 1)‐dimensional (3D) Abelian two‐form gauge theory with a single pseudoscalar field. The latter field (having the negative kinetic term
S. K. Panja   +3 more
wiley   +1 more source

Two-Point Correlators of Fermionic Currents in External Magnetic Field

open access: yesEPJ Web of Conferences, 2017
We study the two-point correlation functions under an influence of the constant homogeneous magnetic field. In addition to the correlators of scalar, pseudoscalar, vector and axial-vector fermionic currents, we calculate the non-diagonal one including ...
Dobrynina Alexandra   +3 more
doaj   +1 more source

Relativistic corrections to the pair Bc-meson production in e+e− annihilation

open access: yesNuclear Physics B, 2016
Relativistic corrections to the pair Bc-meson production in e+e−-annihilation are calculated. We investigate a production of pair pseudoscalar, vector and pseudoscalar+vector Bc-mesons in the leading order perturbative quantum chromodynamics and ...
A.A. Karyasov   +2 more
doaj   +1 more source

Pseudoscalar Portal Dark Matter and New Signatures of Vector-like Fermions

open access: yes, 2016
Fermionic dark matter interacting with the Standard Model sector through a pseudoscalar portal could evade the direct detection constraints while preserving a WIMP miracle.
Fan, JiJi   +2 more
core   +1 more source

Excited scalar and pseudoscalar mesons in the extended linear sigma model

open access: yesEuropean Physical Journal C: Particles and Fields, 2017
We present an in-depth study of masses and decays of excited scalar and pseudoscalar $${\bar{q}}q$$ q ¯ q states in the Extended Linear Sigma Model (eLSM). The model also contains ground-state scalar, pseudoscalar, vector and axial-vector mesons.
Denis Parganlija, Francesco Giacosa
doaj   +1 more source

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