Results 101 to 110 of about 27,535 (267)
Physics Letters B, 2017 The Covariant Spectator Theory (CST) is used to calculate the mass spectrum and vertex functions of heavy–light and heavy mesons in Minkowski space. The covariant kernel contains Lorentz scalar, pseudoscalar, and vector contributions.
Sofia Leitão +3 more
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Branching ratios of Bc Meson Decaying to Pseudoscalar and Axial-Vector Mesons
, 2009 We study Cabibbo-Kobayashi-Maskawa (CKM) favored weak decays of Bc mesons in the Isgur-Scora-Grinstein-Wise (ISGW) quark model. We present a detailed analysis of the Bc meson decaying to a pseudoscalar meson (P) and an axial-vector meson (A).
Ball P +14 more
core +1 more source
Pseudoscalar Mesons and Emergent Mass
Few-Body SystemsAbstractDespite its role in the continuing evolution of the Universe, only a small fraction of the mass of visible material can be attributed to the Higgs boson alone. The overwhelmingly dominant share may/should arise from the strong interactions that act in the heart of nuclear matter; namely, those described by quantum chromodynamics.
Raya, Khépani +4 more
openaire +3 more sources
Exploring solutions to the muon g-2 anomaly in a 3-3-1 model under flavor constraints
European Physical Journal C: Particles and FieldsThe magnetic moment of the muon can receive significant two-loop contributions from a light pseudoscalar. Notably, the spectrum of scalars of 3-3-1 models includes one pseudoscalar.
A. Doff +2 more
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Semileptonic decay of Ds+→π0ℓ+νℓ via neutral meson mixing
Physics Letters B, 2020 Based on the mechanism of neutral meson mixing, we predict the branching fraction of the semileptonic decay of Ds+→π0ℓ+νℓ (ℓ=e, μ) using recently measured branching fraction of Ds+→ηe+νe by BESIII experiment.
Hai-Bo Li, Mao-Zhi Yang
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The annihilation of virtual photons into pseudoscalar mesons [PDF]
The European Physical Journal C, 2001 We investigate the possibility to constrain the pion distribution amplitude from the gamma* gamma* -> pi transition. For a surprisingly large range in the two photon virtualities we find that the transition form factor is essentially independent of the distribution amplitude. This in turn entails a parameter-free prediction of QCD. The gamma* gamma*
Diehl, M., Kroll, P., Vogt, C.
openaire +5 more sources
Next-to-leading order corrections to deeply virtual production of pseudoscalar mesons
Physics Letters B, 2017 We complete the perturbative next-to-leading order corrections to the hard scattering amplitudes of deeply virtual meson leptoproduction processes at leading twist-two level by presenting the results for the production of flavor singlet pseudoscalar ...
G. Duplančić +2 more
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Chiral Structure of Scalar and Pseudoscalar Mesons [PDF]
Advances in High Energy Physics, 2013 45 pages, 7 figures, 7 tables, to appear in Advances in High Energy ...
openaire +4 more sources
Pseudoscalar meson and heavy vector meson scattering lengths [PDF]
Physical Review D, 2011 We have systematically studied the S-wave pseudoscalar meson and heavy vector meson scattering lengths to the third order with the chiral perturbation theory, which will be helpful to reveal their strong interaction. For comparison, we have presented the numerical results of the scattering lengths (1) in the framework of the heavy meson chiral ...
Xiang Liu +3 more
openaire +3 more sources
Exact formula of the spectrum of the pseudoscalar octet
Physics Letters B, 2015 Non-perturbative proof is presented of a generalized version of Goldstone theorem, where the Lagrangian conserves an approximate SU(3) chiral symmetry, that both quark masses and electromagnetism make contributions to the masses of spinless particles of ...
R. Ling, B.L. Li, J.L. Ping
doaj +1 more source