Three-component multiplicity distribution, oscillation of combinants and properties of clans in pp collisions at the LHC

0495736 - ÚJF 2019 RIV US eng J - Journal Article
Zborovský, Imrich
Three-component multiplicity distribution, oscillation of combinants and properties of clans in pp collisions at the LHC.
European Physical Journal C. Roč. 78, č. 10 (2018), č. článku 816. ISSN 1434-6044. E-ISSN 1434-6052
R&D Projects: GA MŠMT(CZ) LTT17018
Institutional support: RVO:61389005
Keywords : LHC * pp collisions * experimental data
OECD category: Particles and field physics
Impact factor: 4.843, year: 2018

Multiplicity distributions of charged particles measured by the ATLAS Collaboration in proton-proton collisions at root s = 8 and 13 TeV are analyzed in the framework of a weighted superposition of three negative binomial distribution functions. The examination of the experimental data confirms the existence of a narrow peak at low multiplicities found earlier at root s = 0.9 and 7 TeV. The peak is described by the third separate component of the total distribution. The energy dependence of the multiplicity characteristics of the three-component scenario is studied. It is demonstrated that the third multiplicity component might be responsible for oscillations of combinants observed lately in the analysis of the multiplicity distributions measured in proton-proton collisions at the LHC. Some consequences of the three-component description of the data for the clan parameters are analyzed.
Permanent Link: http://hdl.handle.net/11104/0288660