Physics – Instrumentation and Detectors
Scientific paper
2011-07-04
Physics
Instrumentation and Detectors
Quark Matter 2011 Conference Proceedings, 4 pages, 2 figures
Scientific paper
Measurements of the cross sections of the reference processes seen by the ALICE trigger system were obtained based on beam properties measured from van der Meer scans. The measurements are essential for absolute cross section determinations of physics processes. The paper focuses on instrumental and technical aspects of detectors and accelerators, including a description of the extraction of beam properties from the van der Meer scan. As a result, cross sections of reference processes seen by the ALICE trigger system are given for proton-proton collisions at two energies; $\sqrt{s}$=2.76 TeV and 7 TeV, together with systematic uncertainties originating from beam intensity measurements and other detector effects. Consistency checks were performed by comparing to data from other experiments in LHC.
for the ALICE Collaboration
Oyama Ken
No associations
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