Friday, May 31, 2013

1305.7044 (K. Oyama et al.)

Reference cross section measurements with ALICE in pp and Pb-Pb
collisions at LHC

K. Oyama, for the ALICE Collaboration
Cross sections of reference trigger processes were obtained based on beam property measurements in dedicated luminosity calibration experiments (van der Meer scans). These cross-sections are essential for absolute cross section determinations of physics processes. The reference cross sections are presented for pp collisions at two center of mass energies; 2.76 TeV and 7 TeV, and for Pb-Pb collisions at 2.76 TeV together with a discussion of the systematic uncertainty originating from beam intensity and rate measurement uncertainties.
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