We calculate jet productions in p＋Au collisions at the RHIC at next-to-leading order with perturbative QCD. Inclusive jet transverse energy spectrum, dijet invariant mass spectrum, dijet angular distribution, and cor...We calculate jet productions in p＋Au collisions at the RHIC at next-to-leading order with perturbative QCD. Inclusive jet transverse energy spectrum, dijet invariant mass spectrum, dijet angular distribution, and corresponding nuclear modification factors for the three observables in p＋Au collisions at √s=200 GeV are given, where the initial-state cold nuclear matter （CNM） effects are included by taking advantage of four parametrization sets of nuclear parton distribution functions （nPDFs） - EPS, nCTEQ, HKN and DS. We demonstrate that inclusive jet transverse energy （ET） spectrum, dijet invariant mass （MJJ） spectrum with all 4 nPDFs are increased at low ET or MJJ, whereas at high ET or MJJ large deviation of results with different nPDFs is observed. It is found that the dijet angular distributions in p＋Au collisions do not vary relative to those in p＋p collisions for all 4 nPDFs.展开更多
基金Supported by Ministry of Education of China(NCET-09-0411)National Natural Science Foundation of China(11075062, 10825523,10875052)+3 种基金MOST of China(2008CB317106)NSF of Hubei Province(2010CDA075)MOE and SAFEA of China (PITDU-B08033)CCNU(CCNU11C01001,QLPL2011P01)
文摘We calculate jet productions in p＋Au collisions at the RHIC at next-to-leading order with perturbative QCD. Inclusive jet transverse energy spectrum, dijet invariant mass spectrum, dijet angular distribution, and corresponding nuclear modification factors for the three observables in p＋Au collisions at √s=200 GeV are given, where the initial-state cold nuclear matter （CNM） effects are included by taking advantage of four parametrization sets of nuclear parton distribution functions （nPDFs） - EPS, nCTEQ, HKN and DS. We demonstrate that inclusive jet transverse energy （ET） spectrum, dijet invariant mass （MJJ） spectrum with all 4 nPDFs are increased at low ET or MJJ, whereas at high ET or MJJ large deviation of results with different nPDFs is observed. It is found that the dijet angular distributions in p＋Au collisions do not vary relative to those in p＋p collisions for all 4 nPDFs.
