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Charged particles at 900 GeV in ATLAS
Experiment: ATLAS (LHC 900GeV)
Inspire ID: 849050
  • Frank Siegert
References: Beams: p+ p+
Beam energies: (450.0, 450.0) GeV
Run details:
  • pp QCD interactions at 900 GeV including diffractive events.

The first measurements with the ATLAS detector at the LHC. Data were collected using a minimum-bias trigger in December 2009 during proton-proton collisions at a centre of mass energy of 900 GeV. The charged- particle density, its dependence on transverse momentum and pseudorapid- ity, and the relationship between transverse momentum and charged-particle multiplicity are measured for events with at least one charged particle in the kinematic range $|\eta| < 2.5$ and $p_\perp > 500$ MeV. All data is corrected to the particle level.