Results 111 to 120 of about 48,235 (192)

Radiative decays of vector and pseudoscalar nonets

open access: yesEPJ Web of Conferences, 2012
Using a counting scheme which treats the light pseudoscalar and the light vector-meson nonet on equal footing, the decays of the narrow light vector mesons into a pseudoscalar meson and a dilepton and of the η′ meson into an ɷ meson and a dielectron are ...
Lutz M.F.M., Leupold S., Terschlüsen C.
doaj   +1 more source

Debajyoti Choudhury

open access: yes, 1992
Gluon fusion into a very heavy neutrino pair by Higgs exchange is shown to lead to substantial production cross sections at $pp$ supercolliders even without any extra generation of quarks.
Barger   +25 more
core   +1 more source

Renormalization of the pseudoscalar operator at four loops in QCD

open access: yesJournal of High Energy Physics
We present the renormalization constant of the pseudoscalar operator defined with a non-anticommuting γ 5 in dimensional regularization up to four-loop order in perturbative Quantum Chromodynamics (QCD).
Long Chen   +2 more
doaj   +1 more source

Search for dark matter produced in association with a Higgs boson decaying to a τ lepton pair in proton-proton collisions at $$\sqrt{s}=13$$ TeV

open access: yesJournal of High Energy Physics
A search for dark matter particles produced in association with a Higgs boson decaying into a pair of τ leptons is performed using data collected in proton-proton collisions at a center-of-mass energy of 13 TeV with the CMS detector.
The CMS collaboration   +2387 more
doaj   +1 more source

Induced Pseudoscalar Coupling Constant

open access: yes, 1998
The recent TRIUMF experiment for $ ^- p \to n _ $ gave a surprising result that the induced pseudoscalar coupling constant $g_P$ was larger than the value obtained from $ ^- p \to n _ $ experiment as much as 44 %. Reexamining contribution of the axial vector current, we found an additional term to the matrix element of Beder and Fearing ...
Cheon, Il-Tong, Cheoun, Myung Ki
openaire   +2 more sources

Chiral SU(3) × SU(3) theorems for pseudoscalar-pseudoscalar scattering amplitudes

open access: yesNuclear Physics B, 1970
Abstract The set of all soft-meson theorems for all scattering amplitudes of the pseudoscalar octet, with two particles off shell, employing PCAC for each pseudoscalar state, current algebra and the σ-terms following from (3, 3 ) + ( 3 ,3) breaking of chiral SU(3) × SU(3) symmetry are given.
openaire   +1 more source

Novel probes for electron-muon flavor violation from exotic Higgs decays

open access: yesJournal of High Energy Physics
In this paper, we propose two novel signatures of Higgs decays to search for electron-muon flavor violation. These signatures arise from the presence of a light pseudoscalar into which the 125-GeV Higgs boson decays.
P. Uttayarat, J. Julio, R. Primulando
doaj   +1 more source

Internal symmetry implications of the Veneziano model in pseudoscalar-pseudoscalar scattering

open access: yesNuclear Physics B, 1969
Abstract The leading order Veneziano model amplitudes for ( J P ) 0 − × 0 − → 0 − × 0 − scattering ∗∗ constrained by the absence of “exotic” resonances, is shown to predict the coupling constant relation of SU(3) coupled with the quark-model/SU(6) ideal singlet-octet mixing in the 1 − , 2 + , nonets.
openaire   +1 more source

Pseudoscalar Higgs plus jet production at Next-to-Next-to-Leading Order in QCD

open access: yesJournal of High Energy Physics
We present a calculation of pseudoscalar Higgs production in association with a jet at Next-to-Next-to Leading Order (NNLO) accuracy in QCD. We work in an effective field theory in which m t → ∞ resulting in effective operators which couple the ...
Youngjin Kim, Ciaran Williams
doaj   +1 more source

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