Geometric properties and charged particles yields behind Glauber model in high energy pA and AA collisions

Tatiana Drozhzhova, Grigory Feofilov, Vladimir Kovalenko, Andrey Seryakov

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

We present two independent estimates of the number of nucleon-nucleon collisions (Ncoll) and the number of participant nucleons (Npart) in AA and pA interactions at the LHC energies, obtained using Monte Carlo calculations: the Modified Glauber model (MGM) and more detailed "non-Glauber Model", based on the color dipoles approach. Contrary to generally used standard Glauber model, the MGM takes into account in an effective way the energy-momentum conservation in soft particles production. Thus it provides with only one parameter the quantitative description of scaling of the charged particle yields with Npart, describing observed in experiment in a wide energy region from SPS to LHC. The second model provides parton-string description of pp, pA and AA interaction considering the energy conservation in nucleon-nucleon collisions and string interaction (string fusion). These estimates are confirmed by calculations using the MC event generators (AMPT and HIJING). The results are pointing at the effect of notice
Original languageEnglish
Pages (from-to)053_1-7
JournalProceedings of Science
VolumeQFTHEP 2013
StatePublished - 2013

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