Results 31 to 40 of about 344 (138)
Meson electromagnetic form factors
EPJ Web of Conferences, 2012 The electromagnetic structure of the pseudoscalar meson nonet is completely described by the sophisticated Unitary&Analytic model, respecting all known theoretical properties of the corresponding form factors.
Dubničková Anna Z. +1 more
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Fortschritte der Physik, Volume 74, Issue 4, April 2026.Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley +1 more source
Model discrimination in pseudoscalar-meson photoproduction
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 ...
J. Nys +3 more
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The Purely Leptonic and Semileptonic Decays of Ds∗ Meson
Advances in High Energy Physics, Volume 2026, Issue 1, 2026.With the potential prospects of the Ds∗ at high‐luminosity heavy‐flavor experiments in the future, we investigated the CKM‐favored and tree‐dominated leptonic Ds∗⟶ℓν¯ℓ,ℓ=e,μ,τ and semileptonic Ds∗⟶Mℓ′ν¯ℓ′ M=ϕ,η′,K and ℓ′=e,μ weak decays in the standard model (SM).
Xiao-Lin Wang +3 more
wiley +1 more source
Probing the transversity spin structure of a nucleon in neutrino-production of a charmed meson
EPJ Web of Conferences, 2016 Including O(mc) terms in the coefficient functions and/or O(mD) twist 3 contributions in the heavy meson distribution amplitudes leads to a non-zero transverse amplitude for exclusive neutrino production of a D pseudoscalar charmed meson on an ...
Pire B., Szymanowski L., Wagner J.
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Gamma-gamma physics and meson transition form factors [PDF]
EPJ Web of Conferences, 2020 I summarize recent experimental results for two photon production of mesons. These processes include the neutral pion, η and η′ transition form factors and two photon production of pseudoscalar meson pairs.
Kupsc Andrzej
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Advances in High Energy Physics, Volume 2026, Issue 1, 2026.In this paper, we presented an approximate analytical treatment of the Coulomb plus logarithmic potential using time‐independent perturbation theory to investigate the mass spectra of bottomonium and charmonium mesons for the low‐order quantum states.
E. Omugbe +4 more
wiley +1 more source
Advances in High Energy Physics, Volume 2026, Issue 1, 2026.Searches are being carried out at the Large Hadron Collider (LHC) for the decay of the CP‐odd scalar (A0) in two‐Higgs‐doublet models (2HDMs) with natural flavour conservation (NFC) in the channel A0⟶h0Z, where h0 is either the discovered 125 GeV Higgs boson or is an undiscovered CP‐even scalar with a mass below 125 GeV.
A. G. Akeroyd +3 more
wiley +1 more source
Relativistic corrections to the pair Bc-meson production in e+e− annihilation
Nuclear Physics B, 2016 Relativistic corrections to the pair Bc-meson production in e+e−-annihilation are calculated. We investigate a production of pair pseudoscalar, vector and pseudoscalar+vector Bc-mesons in the leading order perturbative quantum chromodynamics and ...
A.A. Karyasov +2 more
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Physics Letters B, 2022 We carry out the first lattice QCD derivation of the mixing energy and the mixing angle of the pseudoscalar charmonium and glueball on two gauge ensembles with Nf=2 degenerate dynamical charm quarks. The mixing energy is determined to be 49(6) MeV on the
Renqiang Zhang +5 more
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