کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1851534 1528807 2015 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Measurement of charged jet production cross sections and nuclear modification in p-Pb collisions at sNN=5.02 TeV
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Measurement of charged jet production cross sections and nuclear modification in p-Pb collisions at sNN=5.02 TeV
چکیده انگلیسی
Charged jet production cross sections in p-Pb collisions at sNN=5.02 TeV measured with the ALICE detector at the LHC are presented. Using the anti-kT algorithm, jets have been reconstructed in the central rapidity region from charged particles with resolution parameters R=0.2 and R=0.4. The reconstructed jets have been corrected for detector effects and the underlying event background. To calculate the nuclear modification factor, RpPb, of charged jets in p-Pb collisions, a pp reference was constructed by scaling previously measured charged jet spectra at s=7 TeV. In the transverse momentum range 20≤pT,chjet≤120 GeV/c, RpPb is found to be consistent with unity, indicating the absence of strong nuclear matter effects on jet production. Major modifications to the radial jet structure are probed via the ratio of jet production cross sections reconstructed with the two different resolution parameters. This ratio is found to be similar to the measurement in pp collisions at s=7 TeV and to the expectations from PYTHIA pp simulations and NLO pQCD calculations at sNN=5.02 TeV.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 749, 7 October 2015, Pages 68-81