Results 11 to 20 of about 25,991 (134)
Model discrimination in pseudoscalar-meson photoproduction [PDF]
Physics Letters B, 2016 To learn about a physical system of interest, experimental results must be able to discriminate among models. We introduce a geometrical measure to quantify the distance between models for pseudoscalar-meson photoproduction in amplitude space. Experimental observables, with finite accuracy, map to probability distributions in amplitude space, and the ...
Nys, J. +3 more
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The light scalar mesons as tetraquarks [PDF]
, 2015 We present a numerical solution of the four-quark Bethe-Salpeter equation for ground-state scalar tetraquarks with J^PC = 0^++. We find that the four-body equation dynamically generates pseudoscalar-meson poles in the Bethe-Salpeter amplitude.
Eichmann, Gernot +2 more
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Magnetic polarizabilities of light mesons in $SU(3)$ lattice gauge theory [PDF]
, 2015 We investigate the masses (ground state energies) of neutral pseudoscalar and vector meson in $SU(3)$ lattice gauge theory in strong abelian magnetic field.
Kochetkov, O. A. +3 more
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PSEUDOSCALAR MESONS IN NUCLEAR MEDIUM [PDF]
Nuclear Many-Body and Medium Effects in Nuclear Interactions and Reactions, 2003 Invited talk at the Workshop "MEDIUM02", Kyushu, Oct.25 - 26 ...
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Meson exchange model for pseudoscalar meson-meson scattering [PDF]
Nuclear Physics A, 1990 A dynamical model for pseudoscalar-pseudoscalar meson scattering based on meson exchange, suitable for use in a variety of low- and intermediate-energy mesonic interactions, has been constructed and applied to ππ and kπ scattering with good quantitative results.
J. Speth +3 more
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Evidence for a new pseudoscalar meson
Physics Letters B, 1981 Abstract Performing a PWA of the π − π − π + system over the −t p/p range 0.2 to 0.4 GeV 2 we find evidence for a J P = 0 − , J G =1 − meson of mass 1342 ± 20 MeV and width 220 ±70 MeV decaying into ϵπ. This state is produced by natural parity exchange with a slope similar to that of elastic scattering.
M. Bonesini +13 more
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Hidden gauge formalism for the radiative decays of axial-vector mesons [PDF]
, 2008 The radiative decay of the axial-vector resonances into a pseudoscalar meson and a photon is studied using the vector meson Lagrangian obtained from the hidden gauge symmetry (HGS) formalism.
A. Hosaka +8 more
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Pseudoscalar mesons and mixing models [PDF]
Zeitschrift f�r Physik C Particles and Fields, 1981 We take the charmonium state at 2.98 GeV to be the ηc and show that it can be included in quadratic and linear mass matrix mixing models, and also in those having radial excited states, in a way consistent with perturbative QCD. The effect on the models of the Crystal Ball measurement of BR (ι→γη′)/BR(ι→γη) is studied and the ratio is found to depend ...
A. B. Rimmer, F.D. Gault
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QUARK STRUCTURE OF PSEUDOSCALAR MESONS [PDF]
International 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.
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Amplitude ambiguities in pseudoscalar meson photoproduction [PDF]
Physical Review C, 1996 7 ...
Greg Keaton, Ron L. Workman
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