Abstract
The transverse momentum () distribution of primary charged particles is measured in minimum bias (non-single-diffractive) collisions at with the ALICE detector at the LHC. The spectra measured near central rapidity in the range exhibit a weak pseudorapidity dependence. The nuclear modification factor is consistent with unity for above . This measurement indicates that the strong suppression of hadron production at high observed in collisions at the LHC is not due to an initial-state effect. The measurement is compared to theoretical calculations.
- Received 19 October 2012
DOI:https://doi.org/10.1103/PhysRevLett.110.082302
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© 2013 CERN, for the ALICE Collaboration