# XX International Workshop on Deep-Inelastic Scattering and Related Subjects

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)

### 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

 Proceedings Slides