A relativistic quark model wave function of the pion is obtained from a fit to the experimental data, including the charge radius, charge form factor and weak decay constant. The results are quite stable for different choices of quark mass. The two-photon decay width of the neutral pion and...
The connection between the pion as a Goldstone boson related to spontaneous chiral symmetry breaking and the quark-antiquark structure of the pion is investigated with a chiral effective lagrangian model. The finite pion mass is obtained with current quark masses m u + m d of about 20 MeV and...
The structure function of the constituent quark/antiquark can be extracted from the Kaon (pion) structure function, P(x), assuming that the asymptotic fo... Luis Trevisan,Carlos Tarrillo,L Tomio,... 被引量: 0发表: 2022年 The quarkonia-glueball structure of η, η′ and η(1410) ...
4) subquark structure 亚夸克结构5) quark-gluon matter 夸克胶子物质 1. Thermalization of quark matter and antiquark matter can be influenced by the scattering processes from quark-quark-antiquark to quark-quark-antiquark in quark-gluon matter,and the scattering amplitudes of such processes are...
内容提示: arXiv:hep-ph/0611114v1 9 Nov 20069th International Workshop Meson-2006Cracow, 9–13 June 2006Pion quark structure in QCDA. P. Bakulev † and A. V. Pimikov ‡Bogolyubov Lab. Theor. Phys., JINR, Dubna, 141980 Russia† bakulev@theor.jinr.ru; ‡ pimikov@theor.jinr....
*REVISED VERSION* Two quark propagators with different analytic structure are employed in on and off mass-shell Bethe-Salpeter type equations for the pion and scalar diquark form-factors. One of the quark propagators has been calculated with the inclusion of a trivial quark-gluon vertex and, ...
In normal phase without pion condensate, ΦΦ can be explicitly separated into a meson part and a background part, and the latter is independent of the meson itself and determined by quark properties [36].The meson spectral function, which is also controlled by the complex structure of the ...
Give the effective number of degrees of freedom in a quark-gluon plasma when a massless strange quark is included. 2. Calculate the critical temperature at the phase boundary between a quark-gluon plasma and a massless pion gas for B1/4 = 200 MeV and μ = 0 (Case I). 3. Calculate B1...
1.Test of quark-gluon plasma by two-pion interferometry;夸克胶子等离子体的2π干涉学检测 2.The derivative expansion method is used to solve the kinetic equations of quark-gluon plasma.用在电磁等离子体中广泛证明有效的导数展开法求解夸克胶子等离子体动力论方程,发现场方程的自作用项对夸克胶子等离子体的...
(pT) spectra that are sensitive to the internal structure of the state, are discussed. This analysis is based on proton–proton (pp) collision data, corresponding to an integrated luminosity of 9 fb−1, collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV...