On the pair correlations of neutral K,D,B and Bs mesons with close momenta produced in inclusive multiparticle processes
V.V. Lyuboshitz* and V.L. Lyuboshitz
Pre-published on:
February 16, 2018
Published on:
March 20, 2018
Abstract
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 theoretically 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 K0SK0S, K0LK0L and the correlations of "mixed" pairs K0SK0L at small
relative momenta upon the space-time parameters
of the generation region of K0 and ˉK0 mesons
have been obtained. These relations involve the
contributions of Bose-statistics and S-wave strong final-state interaction of two K0 (ˉK0) mesons as well as of the K0 and ˉK0 mesons, and also the additional contribution of
transitions K+K−→K0ˉK0, and they depend upon the relative fractions of generated pairs
K0K0,
ˉK0ˉK0 and K0ˉK0.
It is shown that under the strangeness conservation the correlation functions of the pairs K0SK0S and K0LK0L, produced in the same inclusive process, coincide,
and the difference between the
correlation functions of the pairs K0SK0S and
K0SK0L is conditioned exclusively by the production
of the pairs of non-identical neutral kaons K0ˉK0.
For comparison, analogous correlations for the pairs of neutral heavy mesons D0, B0 and B0s, generated in multiple inclusive processes with charm ( beauty ) conservation, are also theoretically analyzed --
neglecting, just as for K0 mesons, the weak effects of CP violation. These correlations are described by quite similar expressions: in particular, just as for K0
mesons, the correlation functions for the pairs of states with the same CP parity
(RSS=RLL) and with different CP parity
(RSL) do not coincide, and the difference between
them is conditioned exclusively by the production of pairs D0ˉD0,
B0ˉB0 and B0sˉB0s .
However, contrary to the case of K0 mesons, here the distinction of CP-even and CP-odd states encounters difficulties --
due to the insignificant differences of their
lifetimes and the relatively small probability of purely CP-even and CP-odd decay channels. Nevertheless,
one may expect that it will become possible at future colliders.
DOI: https://doi.org/10.22323/1.310.0041
How to cite
Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating
very compact bibliographies which can be beneficial to authors and
readers, and in "proceeding" format
which is more detailed and complete.