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Measurements of charged-particle distributions with the ATLAS detector

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  • Cairo, Valentina Maria Martina

Abstract

Inclusive charged-particle measurements probe the low-energy region of the non-perturbative quantum chromodynamics. The ATLAS collaboration has recently measured the charged-particle multiplicity and its dependence on transverse momentum and pseudorapidity in special data sets with low LHC beam currents, recorded at centre-of-mass energies of 8 TeV and 13 TeV. The measurements at 8 TeV cover a wide spectrum using charged-particle selections with minimum transverse momentum of both 100 MeV and 500 MeV and in various phase space regions of low and high charged-particle multiplicities, some of which are studied for the first time by ATLAS. The measurements at 13 TeV also present detailed studies with a minimum transverse momentum of both 100 MeV and 500 MeV. The measurements are compared with predictions of various tuned Monte Carlo generators and are found to provide strong constraints on these. None of the Monte Carlo generators with their respective tunes are able to reproduce all the features of the data.

Suggested Citation

  • Cairo, Valentina Maria Martina, 2017. "Measurements of charged-particle distributions with the ATLAS detector," Journal of Central European Green Innovation, Karoly Robert University College, vol. 5(2).
    • Handle: RePEc:ags:hukrgr:266746
    DOI: 10.22004/ag.econ.266746
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