The 7th international conference on particle physics and astrophysics

Multiplicity-dependent properties of multipatcile production at high energy in extended multipomeron exchange model

24 Oct 2024, 17:00

15m

Moskvorechye 2 ()

Oral talk Heavy ion physics Heavy Ion

Description

A new generalization of the Multipomeron exchange model (MEM) [1-3] for pp collisions is proposed, taking into account the effect of event-by-event string tension fluctuations [4]. It is shown that the new version of the MEM correctly reproduces the characteristic thermal behavior of $p_\mathrm{T}$ spectra in a wide energy range. In addition, the new generalization of the MEM improves the description of multiplicity distributions by replacing the Poisson distribution from one string with the discrete Gaussian distribution [5]. Calculations show that the new version of the MEM correctly reproduces the characteristic oscillating behavior of modified combinants in pp collisions over a wide energy range [5]. Simultaneously, the $p_\mathrm{T}$-multiplicity correlation functions are shown to be satisfactorily described together with the multiplicity-dependent $p_\mathrm{T}$ spectrum [6]. Possible applications of the new model for describing the relativisti heavy-ion collisions and opportunities for experiments at the NICA collider (Dubna) are discussed.

The authors acknowledge Saint-Petersburg State University for a research project 95413904.

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Presentation Materials

ICPPA2024Kovalenko.pdf