Logo image
返回
Multiplicity dependence of charged pion, kaon, and (anti)proton production at large transverse momentum in p–Pb collisions at √sNN=5.02 TeV
期刊文章   開放取用(OA)   同儕審查

Multiplicity dependence of charged pion, kaon, and (anti)proton production at large transverse momentum in p–Pb collisions at √sNN=5.02 TeV

J. Adam, D. Adamová, M.M. Aggarwal, G. Aglieri Rinella, M. Agnello, N. Agrawal, Z. Ahammed, S. Ahmad, S.U. Ahn, S. Aiola, …
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 卷.760, 頁碼.720-735
09/2016
DOI: https://doi.org/10.1016/j.physletb.2016.07.050

摘要

Nuclear and High Energy Physics
The production of charged pions, kaons and (anti)protons has been measured at mid-rapidity (−0.5<y<0) in p–Pb collisions at s <sub>NN</sub> =5.02 TeV using the ALICE detector at the LHC. Exploiting particle identification capabilities at high transverse momentum (p <sub>T</sub> ), the previously published p <sub>T</sub> spectra have been extended to include measurements up to 20 GeV/c for seven event multiplicity classes. The p <sub>T</sub> spectra for pp collisions at s=7 TeV, needed to interpolate a pp reference spectrum, have also been extended up to 20 GeV/c to measure the nuclear modification factor (R <sub>pPb</sub> ) in non-single diffractive p–Pb collisions. At intermediate transverse momentum (2<p <sub>T</sub> <10 GeV/c) the proton-to-pion ratio increases with multiplicity in p–Pb collisions, a similar effect is not present in the kaon-to-pion ratio. The p <sub>T</sub> dependent structure of such increase is qualitatively similar to those observed in pp and heavy-ion collisions. At high p <sub>T</sub> (>10 GeV/c), the particle ratios are consistent with those reported for pp and Pb–Pb collisions at the LHC energies. At intermediate p <sub>T</sub> the (anti)proton R <sub>pPb</sub> shows a Cronin-like enhancement, while pions and kaons show little or no nuclear modification. At high p <sub>T</sub> the charged pion, kaon and (anti)proton R <sub>pPb</sub> are consistent with unity within statistical and systematic uncertainties.

檔案與連結 (1)

url
https://doi.org/10.1016/j.physletb.2016.07.050檢視
已出版(紀錄版本) 開放

相關連結

指標

1 檢視次數

詳細資料

Logo image