composition should be supported. it is too difficult to make theoretical predictions on these decay modes based on the four-quark picture for scalar resonances. we just assume they are constituted by two quarks at this moment. the discrepancy between the data and the theoretical results could be...
The strange border of the QCD phases We address the flavour composition along the border between the hadronic and the quark-gluon plasma phases of QCD. The ratio of strange to up and down anti... S Kabana - The European Physical Journal C - Particles and Fields 被引量: 21发表: 2001年 ...
qcdsr, is negligible. the significant different result obtained from two sum rules, as shown in the left and right panels, is mainly due to the different input value of vacuum condensates, especially the quark condensate density. twist three lcdas also contributed from three particle composition ...
There has long been speculation about the nature of the $\\sigma$-resonance. For three decades Jaffe has argued for a tetraquark composition, while others have claimed it is largely a glueball. A key pointer to its nature is its coupling to two photons. Consequently, there have been recent...
[7]. However, the results are strongly dependent on both the assumed spin-orbit structure of the L = 1 states and the composition and coupling structure of the quark-antiquark interaction, and should therefore be viewed as suggestive rather than as de?nite quantitative predictions. References [...
The identification of states as being of molecular nature is not an easy task, and in general standard quark structures, or multiquark states are competing in the interpretation [1, 3]. Yet, there are several experimental features that reveal the molecular structure [2] and ultimately it is ...
The significant coupling of the N-*(1535) resonance to N phi is compatible with previous indications of a large s (s) over bar component in the quark wave function of the N-*(1535) resonance and may be the real origin of the significant enhancement of the phi production over the naiv...
As the quark q and antiquark (q¯) move apart, the potential energy stored in the string increases, and the string may break by the production of a new “vertex” pair q′−q¯′, such that a meson (qq¯′) is formed and q′ is left. This q′ may pair off with a q...
Measurement of CP Asymmetries and Branching Fractions in a Time-Dependent Dalitz Analysis of B^0-->(rho pi)^0 and a Constraint on the Quark Mixing Angle phi_2 We present the results of a time-dependent Dalitz plot analysis of B0 --> pi+\npi- pi0 decays based on a 414/fb data samp...
We address the flavour composition along the border between the hadronic and the quark-gluon plasma phases of QCD. The ratio of strange to up and down anti... S Kabana - The European Physical Journal C - Particles and Fields 被引量: 21发表: 2001年 ...