Results 21 to 30 of about 233,246 (223)
Multi-Pion Correlation Effects on Two-Pion Interferometry [PDF]
J.Phys. G21 (1995) 847-859, 1994 A general derivation of the multi-pion correlation function for completely chaotic source is given. Its effects on the pion multiplicity distribution, two-pion interferometry are studied. A generalized multi-pion correlation function for a partially coherent source is also discussed.
arxiv +1 more source
In-medium pion valence distributions in a light-front model
Physics Letters B, 2017 Pion valence distributions in nuclear medium and vacuum are studied in a light-front constituent quark model. The in-medium input for studying the pion properties is calculated by the quark-meson coupling model.
J.P.B.C. de Melo, K. Tsushima, I. Ahmed
doaj +1 more source
Multi-pion Bose-Einstein Correlation effects on three-pion interferometry [PDF]
Phys.Lett. B406 (1997) 366-372, 1998 Multi-pion correlations effect on three-pion interferometry is studied. It is shown that multi-pion correlations decrease both the apparent radius of the source and the coherent source parameter derived from three-pion interferometry. The data of OPAL group are discussed.
arxiv +1 more source
Pion light-cone wave function and pion distribution amplitude in the Nambu-Jona-Lasinio model [PDF]
, 2002 We compute the pion light-cone wave function and the pion quark distribution amplitude in the Nambu-Jona-Lasinio model. We use the Pauli-Villars regularization method and as a result the distribution amplitude satisfies proper normalization and crossing ...
A. Blin +53 more
core +2 more sources
Multi-pion correlations in high energy collisions [PDF]
Phys.Rev.C58:18-22,1998, 1998 Any-order pion inclusive distribution for a chaotic source in high energy collisions are given which can be used in both theory and experiment to analyze any-order pion interferometry. Multi-pion correlations effects on two-pion and three-pion interferometry are discussed.
arxiv +1 more source
Pion Form Factor Phase, PIon Pion Elasticity and New Electron-Positron Data [PDF]
Phys.Lett.B582:27-31,2004, 2003 New precise data on the low energy electron-positron annihilation into hadrons from Novosibirsk are used to obtain bounds on the elasticity parameter and the difference between the phase of the pion form factor and that of pion pion ...
arxiv +1 more source
The investigation of K+π−, π+K− and π+π− atoms
EPJ Web of Conferences, 2016 Theory, using Low Energy QCD, predicts with high precision the pion-pion and pion-kaon scattering lengths. There is accurate relation between K+π− and π+K− atoms lifetime and pion-kaon S-wave scattering lengths with isospin 1/2 and 3/2.
Yazkov Valeriy
doaj +1 more source
Pion-pion and pion-nucleon interactions in chiral perturbation theory [PDF]
, 1997 Elastic pion-pion and pion-nucleon scattering are reviewed in the context of chiral perturbation theory. Theoretical results from systematic low-energy expansions to O(p^6) for pion-pion and to O(p^3) for pion-nucleon scattering are compared with experimental data. Possible future developments are outlined.
arxiv +1 more source
, 2011 In the framework of the isospin-dependent Boltzmann-Uehling-Uhlenbeck transport model, effect of the momentum dependence of nuclear symmetry potential on pion-/pion+ ratio in the neutron-rich reaction 132Sn+124Sn at a beam energy of 400 MeV/nucleon is ...
Chen, Xi-Meng +4 more
core +1 more source
Gluon parton distribution of the pion from lattice QCD
Physics Letters B, 2021 We present the first determination of the x-dependent pion gluon distribution from lattice QCD using the pseudo-PDF approach. We use lattice ensembles with 2+1+1 flavors of highly improved staggered quarks (HISQ), generated by MILC Collaboration, at two ...
Zhouyou Fan, Huey-Wen Lin
doaj