Speaker
Description
A new generalization of the Multipomeron exchange model [1-4] for studying the multiparticle production in pp, pA and AA collisions is proposed, taking into account the effect of event-by-event string tension fluctuations [5]. It is shown that the new version of the model correctly reproduces the characteristic thermal behavior of $p_\rm{T}$ spectra in a wide energy range. Simultaneously, the $p_\rm{T}$-multiplicity correlation functions are shown to be satisfactorily described together with the multiplicity-dependent $p_\rm{T}$ spectrum. The new finite mass approach allowed to study contributions to the spectra and correlation functions of various types of identified particles.
The authors acknowledge Saint-Petersburg State University for a research project 103821868.
- N. Armesto, D.A. Derkach, G.A. Feofilov, p(t)-multiplicity correlations in a multi-Pomeron-exchange model with string collective effects, Phys. Atom. Nucl. 71, 2087–2095 (2008).
- E. Bodnia, D. Derkach, G. Feofilov, V. Kovalenko, A. Puchkov, Multi-pomeron exchange model for pp and $\mathrm{p}\bar{\mathrm{p}}$ collisions at ultra-high energy, PoS QFTHEP2013 2013, 60 (2013).
- V. Kovalenko, G. Feofilov, A. Puchkov, F. Valiev, Multipomeron Model with Collective Effects for High-Energy Hadron Collisions, Universe 8, 246 (2022).
- V. Vechernin, E. Andronov, V. Kovalenko, A. Puchkov, Multiplicity Distributions and Modified Combinants in the Multipomeron Model of pp Interaction at High Energies, Universe 10, 56 (2024).
- A. Bialas, Fluctuations of the string tension and transverse mass distribution, Phys. Lett. B 466, 301–304 (1999).