Results 71 to 80 of about 27,535 (267)

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

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
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   +4 more
doaj   +1 more source

Leptonic and semileptonic decays of pseudoscalar mesons [PDF]

open access: yesPhysics Letters B, 1999
12 pages LaTeX (elsart.sty) + 4 figures; added references, to appear in Phys.
M. A. IVANOV, SANTORELLI, PIETRO
openaire   +5 more sources

Excited vector mesons: phenomenology and predictions for a yet unknown vector ss state with a mass of about 1.93 GeV

open access: yesEPJ Web of Conferences, 2018
The firm understanding of standard quark-antiquark states (including excited states) is necessary to search for non-conventional mesons with the same quantum numbers.
Piotrowska M., Giacosa F.
doaj   +1 more source

Meson Masses and Mixing Angles in 2+1 Flavor Polyakov Quark Meson Sigma Model and Symmetry Restoration Effects

open access: yes, 2010
The meson masses and mixing angles have been calculated for the scalar and pseudoscalar sector in the framework of the generalized 2+1 flavor Polyakov loop augmented quark meson linear sigma model. We have given the results for two different forms of the
J. I. Kapusta   +2 more
core   +1 more source

QUARK STRUCTURE OF PSEUDOSCALAR MESONS [PDF]

open access: yesInternational Journal of Modern Physics A, 2000
I review to which extent the properties of pseudoscalar mesons can be understood in terms of the underlying quark (and eventually gluon) structure. Special emphasis is put on the progress in our understanding of η–η′ mixing. Process-independent mixing parameters are defined, and relations between different bases and conventions are studied.
openaire   +2 more sources

Incompleteness of complete pseudoscalar-meson photoproduction [PDF]

open access: yesPhysical Review C, 2013
[Background] A complete set is a minimum set of observables which allows one to determine the underlying reaction amplitudes unambiguously. Pseudoscalar-meson photoproduction from the nucleon is characterized by four such amplitudes and complete sets involve single- and double-polarization observables.
Vrancx, Tom   +3 more
openaire   +4 more sources

Role of vector and pseudoscalar mesons in understanding $1/2^-$ $N^*$ and $\Delta$ resonances

open access: yes, 2013
A study of nonstrange meson-baryon systems has been made with the idea of understanding the properties of the low-lying $1/2^-$ $N^*$ and $\Delta$ resonances.
Hosaka, A.   +3 more
core   +1 more source

Relative phases in Dalitz plot amplitudes for $D^0 \to K_S \pi^+ \pi^-$ and $D^0 \to \pi^0 K^+ K^-$ [PDF]

open access: yes, 2010
Relative phases of amplitudes for $D$ meson decays to a light pseudoscalar meson $P$ and a light vector meson $V$ decaying to two pseudoscalar mesons will lead to characteristic interferences on the three-body Dalitz plot.
Bhubanjyoti Bhattacharya   +2 more
core   +1 more source

Pseudoscalar mesons and instantons [PDF]

open access: yesNuclear Physics B, 1983
Abstract We discuss the QCD sum rules for the correlators of pseudoscalar currents with quantum numbers of π, K, η, η′ mesons. In the framework of the instanton model of the QCD vacuum suggested earlier by the author, we calculate SU(3) breaking effects such as K, η masses and ηη′ mixing, as well as the U(1) breaking effect, the η′ mass.
openaire   +2 more sources

Pseudoscalar Meson Dominance and Nucleon Structure

open access: yesFew-Body Systems, 2023
Presented by E.R.A. at the International Conference on the Structure of Baryons Baryons 2022).Nov 7--11, 2022 Seville (Spain)
Arriola, Enrique Ruiz   +1 more
openaire   +2 more sources

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