Results 41 to 50 of about 61,183 (280)

Vectorlike leptons and long-lived bosons at the LHC

open access: yesJournal of High Energy Physics, 2023
We study a renormalizable theory that includes a heavy weak-singlet vectorlike lepton, τ ′ , that decays into a pseudoscalar boson and a tau lepton. We show that this can be the dominant decay mode of τ ′ provided the pseudoscalar couplings deviate from ...
Elias Bernreuther, Bogdan A. Dobrescu
doaj   +1 more source

PSEUDOSCALAR MESON ELECTROPRODUCTION AND TRANSVERSITY [PDF]

open access: yesExclusive Reactions at High Momentum Transfer IV, 2011
Exclusive meson leptoproduction from nucleons in the deeply virtual exchanged boson limit can be described by generalized parton distributions (GPDs). Including spin dependence in the description requires 8 independent quark-parton and gluon-parton functions.
Simonetta Liuti, Gary R. Goldstein
openaire   +3 more sources

Towards a precise determination of the scattering amplitudes of the charmed and light-flavor pseudoscalar mesons [PDF]

open access: yesThe European Physical Journal C, 2018
We study the scattering of the light-flavor pseudoscalar mesons ($$\pi , K, \eta $$π,K,η) off the ground-state charmed mesons ($$D,D_s$$D,Ds) within chiral effective field theory.
Zhi-Hui Guo   +6 more
semanticscholar   +1 more source

Production of a Higgs pseudoscalar plus two jets in hadronic collisions [PDF]

open access: yes, 1998
We consider the production of a Higgs pseudoscalar accompanied by two jets in hadronic collisions. We work in the limit that the top quark is much heavier than the Higgs pseudoscalar and use an effective Lagrangian for the interactions of gluons with the
F. Berends   +14 more
core   +3 more sources

Warm pseudoscalar inflation [PDF]

open access: yesPhysical Review D, 2019
In this note, we will introduce an action for warm inflation model with direct coupling between the pseudoscalar field and mass-less $SU(2)$ gauge fields.
V. Kamali
semanticscholar   +1 more source

The glueball content of ηc

open access: yesPhysics Letters B, 2022
We carry out the first lattice QCD derivation of the mixing energy and the mixing angle of the pseudoscalar charmonium and glueball on two gauge ensembles with Nf=2 degenerate dynamical charm quarks. The mixing energy is determined to be 49(6) MeV on the
Renqiang Zhang   +5 more
doaj   +1 more source

Pseudoscalar-photon Interactions, Axions, Non-Minimal Extensions, and Their Empirical Constraints from Observations [PDF]

open access: yes, 2011
Pseudoscalar-photon interactions were proposed in the study of the relations among equivalence principles. The interaction of pseudoscalar axion with gluons was proposed as a way to solve the strong CP problem.
Balakin, A. B.   +2 more
core   +2 more sources

Nonminimally coupled pseudoscalar inflaton [PDF]

open access: yesPhysical Review D, 2018
We consider a scenario in which the inflaton $ $ is a pseudoscalar field non-minimally coupled to gravity through a term of the form ${\cal X} R ^2$. The pseudoscalar is also coupled to a $U(1)$ gauge field (or an ensemble of ${\cal N}$ gauge fields) through an axial coupling of the form $ F \tilde{F}$. After M. M. Anber and L. Sorbo, Phys. Rev.
Beltrán Almeida, Juan P.   +1 more
openaire   +3 more sources

Search for a light pseudoscalar Higgs boson in the boosted μμττ final state in proton-proton collisions at √s = 13 TeV

open access: yes, 2020
A search for a light pseudoscalar Higgs boson (a) decaying from the 125 GeV (or a heavier) scalar Higgs boson (H) is performed using the 2016 LHC proton-proton collision data at $$ \sqrt{s} $$ = 13 TeV, corresponding to an integrated luminosity of 35 ...
A. Sirunyan   +499 more
semanticscholar   +1 more source

Strange and Charm Quark Spins from Anomalous Ward Identity [PDF]

open access: yes, 2017
We present a calculation of the strange and charm quark contributions to the nucleon spin from the anomalous Ward identity (AWI). It is performed with overlap valence quarks on 2+1-flavor domain-wall fermion gauge configurations on a $24^3 \times 64 ...
Andrei Alexandru   +6 more
core   +3 more sources

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