Probe of soft-QCD in minimum bias events of pp collisions with the ATLAS at the LHC

2023/07/08 by Kulchitsky, Yuri A.
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Nuclear Experiment (nucl-ex)

paper · doi:10.48550/arxiv.2307.03925

Abstract

The study of the minimum-bias charged-particle distributions is reviewed. The data are obtained using the ATLAS detector at the LHC in proton-proton collisions at the centre-of-mass energies from 0.9 to13 TeV. The particles are required to have an absolute pseudorapidity less than 2.5. For charged-particle distributions study two transverse momentum thresholds cases, greater than 100 MeV and 500 MeV were taken. The charged-particle multiplicity, its dependence on the transverse momentum and pseudorapidity, dependence of the average transverse momentum on the charged-particle multiplicity and the KNO-scaling study are presented. The measured distributions are compared with the predictions of various tunings of Monte Carlo generator, which implement different minimum-bias models.The Monte Carlo model predictions qualitatively describe the data well, but with some significant discrepancies. Measurements of minimum-bias events by the ALICE and CMS Collaborations are presented.

Related

• Measurement of Minimum Bias Observables with ATLAS
• Measurement of the Underlying Event and Minimum Bias at LHC
• Performance of the ATLAS Minimum Bias Trigger in pp collisions at the LHC
• Measurements of charged-particle distributions with the ATLAS detector
• Measurements of minimum bias events, underlying event and particle production properties in ATLAS