26-30 March 2012
University of Bonn
Europe/Berlin timezone

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

28 Mar 2012, 15:10
20m
Small Lecture Hall, Mathematical Institute (University of Bonn)

Small Lecture Hall, Mathematical Institute

University of Bonn

Hadronic final states Hadronic final states

Speaker

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

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 $K^0_S K^0_S$, $K^0_L K^0_L$ and the correlations of "mixed" pairs $K^0_S K^0_L$ at small relative momenta upon the space-time parameters of the generation region of $K^0$ and $\bar{K}^0$ mesons have been obtained. These relations involve the contributions of Bose-statistics and S-wave strong final-state interaction of two $K^0$ ( $\bar{K}^0$ ) mesons as well as of a $K^0$ meson with a $\bar{K}^0$ meson, and also the contribution of transitions $K^+ K^- --> K^0 \bar{K}^0$, and they depend upon the relative fractions of produced pairs $K^0 K^0$, $\bar{K}^0\bar{K}^0$ and $K^0\bar{K}^0$. It is shown that under the strangeness conservation the correlation functions of the pairs $K^0_S K^0_S$ and $K^0_L K^0_L$, produced in the same inclusive process, coincide, and the difference between the correlation functions of the pairs $K^0_S K^0_S$ and $K^0_S K^0_L$ is conditioned by the production of the pairs of non-identical neutral kaons $K^0 \bar{K}^0$. 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 .

Primary author

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

Co-author

Dr Vladimir Lyuboshitz (Joint Institute for Nuclear Research, Dubna, Russia)

Presentation Materials