We apply the diabatic approach, specially suited for a QCD based study of conventional (quark-antiquark) and unconventional (quark-antiquark + meson-meson) meson states, to description hidden-bottom mesons. A spectral analysis $I=0$, $J^{++}$ $1^{--}$ resonances with masses up about $10.8$ GeV is carried out. Masses widths all experimentally known resonances, including can be well reproduced. I...

We calculate the next-to-leading order corrections to dihadron production in deep inelastic scattering (DIS) at small $x$ using color glass condensate formalism for case when virtual photon is transverse polarized. Similar of longitudinal exchange all UV and soft singularities cancel while collinear divergences are absorbed into quark antiquark-hadron fragmentation functions. Rapidity lead Jali...

Are heavy quarks produced thermally or only by hard parton collisions? What is the probability that a produced heavy quark or antiquark is observed in a given resonance?

A heavy quark effective field lagrangian keeping particle and antiparticle mixed sectors * Abstract We examine the applicability of the heavy-quark effective field theory (HQEFT) to heavy quark-antiquark pair annihilation or creation processes. To this end, we keep the particle-antiparticle sector in the inverse heavy-quark mass expansion of the HQEFT Lagrangian. We show that by removing the la...

A heavy quark effective field lagrangian keeping particle and antiparticle mixed sectors * Abstract We examine the applicability of the heavy-quark effective field theory (HQEFT) to heavy quark-antiquark pair annihilation or creation processes. To this end, we keep the particle-antiparticle sector in the inverse heavy-quark mass expansion of the HQEFT Lagrangian. We show that by removing the la...

We investigate dynamics of the chiral transition in expanding quark-antiquark plasma produced in an ultra-relativistic heavy ion collision. The chiral symmetry break-down and dynamical generation of the constituent quark mass are studied within the linear sigma model and Nambu–Jona-Lasinio model. Time dependence of the quark and antiquark densities is obtained from the scaling solution of the r...

We report detailed calculations of the profiles of energy and action densities in the quark-antiquark string in SU(2) lattice gauge theory.

Abstract We study the processes $$K{\bar{K}} \rightarrow \phi $$ K ¯ → ϕ , $$\pi D D^*$$ π D ∗ {\bar{D}} {\bar{D}}^*$$ and production of ...