EPS HEP 2013 Stockholm

On the pair correlations of neutral K, D, B and B_s mesons with close momenta produced in inclusive multiparticle processes

Not scheduled

20m

KTH and Stockholm University Campus

Poster Presentation QCD

Speaker

Dr Valery Lyuboshitz (Joint Institute for Nuclear Research ( Dubna ))

Description

The phenomenological structure of inclusive cross-sections of the production of two neutral K mesons in hadron--hadron, hadron--nucleus and nucleus--nucleus collisions is investigated taking into account the strangeness conservation in strong and electromagnetic interactions. Relations describing the dependence of the correlations of two short-lived and two long-lived neutral kaons $K_S^0{K}_S^0$, $K_L^0{K}_L^0$ and the correlations of "mixed" pairs $K_S^0{K}_L^0$ at small relative momenta upon the space-time parameters of the generation region of $K^0$ and ${\overline{K}}^0$ mesons have been obtained. These relations involve the contributions of Bose-statistics and S-wave strong final-state interaction of two $K^0$ (${\overline{K}}^0$)-mesons as well as of a $K^0$-meson with a ${\overline{K}}^0$-meson, and also the contribution of transitions $K^{+}{K}^{-}-->K^0{\overline{K}}^0$, and they depend upon the relative fractions of produced pairs $K^0{K}^0$, ${\overline{K}}^0{\overline{K}}^0$ and $K^0{\overline{K}}^0$. It is shown that under the strangeness conservation the correlation functions of the pairs $K_S^0{K}_S^0$ and $K_L^0{K}_L^0$, produced in the same inclusive process, coincide, and the difference between the correlation functions of the pairs $K_S^0{K}_S^0$ and $K_S^0{K}_L^0$ is conditioned exclusively by the production of the pairs of non-identical neutral kaons $K^0{\overline{K}}^0$. Analogous correlations for the pairs of neutral heavy mesons $D^0$, $B^0$ and $B_s^0$, generated in multiple processes with the charm (beauty) conservation, are analyzed, and differences from the case of neutral K mesons are discussed .

Presentation materials

Slides

EPS_HEP_2013--Valery_Lyuboshitz_2.pdf