نتایج جستجو برای: antiquark interaction
تعداد نتایج: 566879 فیلتر نتایج به سال:
The X17 particle, the E38 and anomalous soft photons are particles because they do not appear to belong any known Standard Model families. We propose a QED meson description of as composite systems light quark antiquark bound confined by compact interaction, combining Polyakov's transverse confinement opposite electric charges in (2+1)D Schwinger's longitudinal for massless (1+1)D. With predict...
The main objective of this work is to explore the evolution in the structure of the quark-antiquark bound states in going down in the chirally restored phase from the so-called “zero binding points” Tzb to the QCD critical temperature Tc at which the Nambu-Goldstone and Wigner-Weyl modes meet. In doing this, we adopt the idea recently introduced by Shuryak and Zahed for charmed c̄c, light-quark ...
The isovector–vector and the isovector–axial-vector current are related by a chiral transformation. These currents can be called chiral partners at the fundamental level. In a world where chiral symmetry was not broken, the corresponding current-current correlators would show the same spectral information. In the real world chiral symmetry is spontaneously broken. A prominent peak — the ρ-meson...
Hulthén plus Hellmann potentials are adopted as the quark-antiquark interaction potential for studying mass spectra of heavy mesons. We solved radial Schrödinger equation analytically using Nikiforov-Uvarov method. The energy eigenvalues and corresponding wave function in terms Laguerre polynomials were obtained. present results applied calculating mesons such charmonium bottomonium. Four speci...
We point out that the fragmentation of a strange quark into nucleons versus antinucleons is not necessarily identical Dp/s(z,Q ) 6= Dp/s(z,Q ), even though the perturbative contributions from gluon splitting and evolution are p ↔ p symmetric. The observation of such asymmetries in the hadronization of strange and other heavy quarks can provide insight into the nonperturbative mechanisms underly...
The static potentials for quark-antiquark-gluon and 3-gluon systems are computed with lattice QCD methods. For the quark-antiquark-gluon hybrid meson the static potential is obtained for different values of the angle between the quark-gluon and antiquark-gluon segments. The simulations support the formation of an adjoint string for small angles, while for large angles, the adjoint string is rep...
We present evidence for leading particle production in hadronic decays of the Z 0 boson to light-flavor jets. A polarized electron beam was used to tag quark and antiquark jets, and a vertex detector was employed to reject heavy-flavor events. Charged hadrons were identified with a Cherenkov ring imaging detector. In the quark jets, more high-momentum p, Λ, K − , and K * 0 were observed than th...
We present evidence for leading particle production in hadronic decays of the Z 0 boson to light-avor jets. A polarized electron beam was used to tag quark and antiquark jets, and a vertex detector was employed to reject heavy-avor events. Charged hadrons were identiied with a Cherenkov ring imaging detector. In the quark jets, more high-momentum p, , K , , and K 0 were observed than their anti...
The main objective of this work is to explore the evolution in the structure of the quark-antiquark bound states in going down in the chirally restored phase from the so-called “zero binding points” Tzb to the QCD critical temperature Tc at which the Nambu-Goldstone and Wigner-Weyl modes meet. In doing this, we adopt the idea recently introduced by Shuryak and Zahed for charmed c̄c, light-quark ...
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