Predictions for p+Pb at 5.02A TeV to test initial state nuclear shadowing at the Large Hadron Collider
| Autor: | Barnafoldi, G. G., Barrette, J., Gyulassy, M., Levai, P., Papp, G., Petrovici, M., Pop, V. Topor |
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| Rok vydání: | 2012 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | Collinear factorized perturbative quantum chromodynamics (pQCD) model predictions are compared for $p+{\rm Pb}$ at 5.02$A$ TeV to test nuclear shadowing of parton distribution at the Large Hadron Collider (LHC). The pseudorapidity distribution the nuclear modification factor (NMF), $R_{p{\rm Pb}}(y=0,p_T<20\;{\rm GeV}/{\it c}) = dn_{p{\rm Pb}} /(N_{\rm coll}(b)dn_{pp})$ and the pseudorapidity asymmetry $Y_{asym}^{h}(p_T)=R^h_{pPb}(p_T, \eta<0)/R^h_{pPb}(p_T,\eta>0)$ are computed using {\small HIJING/B\=B v2.0 model} and a pQCD improved parton model kTpQCD\_v2.0 which embedded generalized parton distribution functions (PDFs). These results are updated calculations of those presented in Phys. Rev. C {\bf 85}, 024903 (2012). Comment: 16 pages, 7 figures, contribution at 8th Workshop on "High p_T physics at the LHC", 20-24 October 2012, Wuhan, China version 2, 3 new figures added, typos corrected, new references |
| Databáze: | arXiv |
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