Commonly, the structure of compact stars were considered as a spherically symmetric object with underlying matter distribution in isotropic type i.e., radial pressure pr and tangential pressure pt are equal. But in the last few decades, it has been observed that anisotropic is a natural physical...
These relatively narrow decays width for radially excited state are usually obtained within the nonrelativistic reduction of the axial-vector coupling between the pseudoscalar meson and light quark. This is due to the kind of selection rule from the structure of the transition operator in the ...
Illustrative examples of quark color charge are provided by the quark structures of a proton and negative pion in Fig. 9.21. On the left of the figure is a proton, which contains two up (u) quarks and one down (d) quark. Mesons contain a quark and an antiquark. The meson illustrated...
H Arata - 《Supplement of the Progress of Theoretical Physics》 被引量: 61发表: 1999年 Quark-hadron duality and truncated moments of nucleon structure functions We employ a novel new approach to study local quark-hadron duality using "truncated" moments, or integrals of structure functions over ...
Compared electronic structure of negative ions M p C n : I. Normal elements in Hückel theory Negative cluster ions M p C n (M normal element, n <10, p =14) produced by various experimental techniques from carbides show in their emission int... M Leleyter - 《Zeitschrift Für Physik ...
The Potential of Pentaquark Pc and Its Expansion Pentaquark is considered to be composed of one baryon and one meson. For pentaquark, with such a structure, the poten- tial is given as follows [2]: V ΣcD ∗ ðrÞ = 1 gg1 3 fπ ∇2 Y ðΛ, mπ, rÞJ 0G0, ...
(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...
We find that negative values of $\chi$ significantly increase both the mass and radius of the quark star. The inclusion of $\chi$ helps to satisfy recent the astrophysical constraints on the mass-radius relationship. We have also constrained the values of $\chi$ for each EoS, based on ...
Nevertheless, because it represents the contribution of the channel wave function to the total normalization, the compositeness X˜ i will have an important piece of information on the structure of the resonance. More- over, in Ref. [63], it was claimed that one can formulate a meaningful ...
‘switched off’. In particular, a first calculation of the nucleon charm magnetic moment has appeared [1], finding a negative value on the order of10−3in units of the nuclear magneton. In the context of high-precision calculations of the hadronic vacuum polarisation (HVP), the sub-...