Results 41 to 50 of about 295 (135)
NONLEPTONIC DECAYS OF CHARMED MESONS INTO TWO PSEUDOSCALAR MESONS [PDF]
Modern Physics Letters A, 1993 We investigate the nonleptonic decay of charmed meson into two pseudoscalar mesons using the vector-dominance model, and compare the results with those obtained from the factorization model. In particular, we discuss the role of the annihilation diagrams in the two models.
Das, Ashok, Mathur, Vishnu
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Heavy-quark spin symmetry breaking in the Born-Oppenheimer approximation
Journal of High Energy Physics, 2023 Heavy-quark spin symmetry is explicitly broken by the mass splitting between a heavy-light pseudoscalar meson and its vector partner. This fact plays a pivotal role in the physics of states whose mass lies close to the threshold of an open-flavor meson ...
R. Bruschini
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Nuclear Forces in Pseudoscalar Meson Theory [PDF]
Physical Review, 1953 The nuclear forces in pseudoscalar meson theory are evaluated using a nonrelativistic approximation to the relativistic interaction. The potential is obtained in a form which allows explicit evaluation of the contribution due to the multiple scattering of the virtual mesons between the two nucleons.
Brueckner, K. A., Watson, K. M.
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Effects of light-by-light scattering in the Lamb shift and hyperfine structure of muonic hydrogen [PDF]
EPJ Web of Conferences, 2019 We calculate the meson exchange contribution to the interaction operator of muon and proton, which is determined by the meson coupling with two photon state.
Dorokhov A. E. +3 more
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Amplitude ambiguities in pseudoscalar meson photoproduction [PDF]
Physical Review C, 1996 7 ...
Keaton, Greg, Workman, Ron
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EPJ 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.
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European 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
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A tmQCD mixed-action approach to flavour physics
EPJ Web of Conferences, 2018 We discuss a mixed-action approach in which sea quarks are regularised using non-perturbatively O(a) improved Wilson fermions, while a fully-twisted tmQCD action is used for valence quarks.
Herdoíza Gregorio +4 more
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Distribution amplitudes of pseudoscalar mesons
, 2006 Presented at XXIV International Symposium on Lattice Field Theory, July 23-28 2006, Tucson Arizona ...
Braun, Vladimir M. +10 more
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Pseudoscalar mesons and instantons [PDF]
Nuclear 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.
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