The distribution of the fundamental constituents, the quarks and gluons, is expected to be different in pions, kaons, and nucleons. However, experimental data are sparse. As a result, there has been persistent doubt about the behaviour of the pion's valence quark structure function at large ...
For DELPHI and SLD, in addition to the inclusive measurements, we also consider flavour-tagged measurements, whereby the production of the observed kaon has been reconstructed from hadronisation of all light quarks or of a b quark. In the case of SIDIS, the data corresponds to the hadron ...
In the present work, we propose to explore the productions of the bottom and bottom-strange mesons in the high-energy pion and kaon-induced reactions on a proton target. The cross sections are evaluated with an effective Lagrangian constructed by the heavy-quark limit and chiral symmetry. Our ...
The kaon's glue and sea distributions are similar to those in the pion, although the inclusion of mass-dependent splitting functions introduces some differences on the valence-quark domain. This study should stimulate improved analyses of existing data and motivate new experiments sensitive to all $...
A basic expression of that structure is the pion's parton distribution amplitude (DA), φπ(x;ζ), which plays a key role in perturbative analyses of hard exclusive processes in quantum chromodynamics (QCD) [11], [12], [13]. As the probability amplitude for finding a valence quark ...
. We present results for pion and kaon production based on the unintegrated parton (gluon, quark, antiquark) distributions. 2. Inclusive cross section for partons The formulae for inclusive quark/antiquark distributions are similar to the formula ...
The pion is made of a u, d quark-antiquark pair and its mass is about 140MeV. Quantum constraints on a charged particle structure Topics are varied, ranging from neutral pion decay and particle physics outreach to secondary education to Higgs boson searches at the Tevatron and the Large Hadr...
(x) predictions from the chiral quark-soliton model were taken [13]. In this note we apply this approach to predict azimuthal asymmetries in pion and kaon production from SIDIS off a longitudinally polarized deuterium target, which are under current study at HERMES. Similar works have been do...
The π+π- rescattering model predicts a two-photon effective mass spectrum peaked at slightly higher mγγ than in chiral perturbation theory, and a branching ratio B(KL→π0γγ)≈7.5×10-7. Implications are discussed for the corresponding decay of the charged kaon....
Pion and kaon dissociation in a medium of hot quark matter is studiedin the Nambuu2013Jona-Lasinio model. The decay widths of pion and kaonare found to be large but finite at temperatures much higher than theso-called critical temperature of chiral or deconfinement transition,kaon decay width...