Production of charged pions, kaons and protons at large transverse momenta in pp and Pb–Pb collisions at √sNN=2.76TeV
| Autor: | ALICE Collaboration, Armesto Pérez, Néstor, González Ferreiro, Elena, Pajares Vales, Carlos, Salgado López, Carlos Alberto |
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| Přispěvatelé: | Universidade de Santiago de Compostela. Departamento de Física de Partículas, Universidade de Santiago de Compostela. Instituto Galego de Física de Altas Enerxías (IGFAE) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela instname |
| Popis: | Transverse momentum spectra of π±, K±and p(¯ p)up to pT=20GeV/cat mid-rapidity in pp, peripheral (60–80%) and central (0–5%) Pb–Pb collisions at √sNN=2.76TeVhave been measured using the ALICE detector at the Large Hadron Collider. The proton-to-pion and the kaon-to-pion ratios both show adistinct peak at pT≈3GeV/cin central Pb–Pb collisions. Below the peak, pT10GeV/cparticle ratios in ppand Pb–Pb collisions are in agreement and the nuclear modification factors for π±, K±and p(¯ p)indicate that, within the systematic and statistical uncertainties, the suppression is the same. This suggests that the chemical composition of leading particles from jets in the medium is similar to that of vacuum jets. SI |
| Databáze: | OpenAIRE |
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