Year: 2016
Type: article
Abstract: Multiplicity distributions (MDs) P ( N ) measured in multiparticle production processes are most frequently described by the negative binomial distribution (NBD). However, with increasing collision energy some systematic discrepancies have become more and more apparent. They are usually attributed to the possible multi-source structure of the production process and described using a multi-NBD form of the MD. We investigate the possibility of keeping a single NBD but with its parameters depending on the multiplicity N . This is done by modifying the widely known clan model of particle production leading to the NBD form of P ( N ) . This is then confronted with the approach based on the so-called cascade-stochastic formalism which is based on different types of recurrence relations defining P ( N ) . We demonstrate that a combination of both approaches allows the retrieval of additional valuable information from the MDs, namely the oscillatory behavior of the counting statistics apparently visible in the high energy data.
Authors: Grzegorz Wilk, Zbigniew Włodarczyk
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2281863792