Logo image
Measurements of the suppression and correlations of dijets in Pb+Pb collisions at√sNN = 5.02 TeV
期刊文章   開放取用(OA)   同儕審查

Measurements of the suppression and correlations of dijets in Pb+Pb collisions at√sNN = 5.02 TeV

G. Aad, B. Abbott, D.C. Abbott, A. Abed Abud, K. Abeling, D.K. Abhayasinghe, S.H. Abidi, O.S. AbouZeid, N.L. Abraham, H. Abramowicz, …
Physical Review C, 卷.107(5), 054908
05/2023

摘要

Nuclear and High Energy Physics
Studies of the correlations of the two highest transverse momentum (leading) jets in individual Pb+Pb collision events can provide information about the mechanism of jet quenching by the hot and dense matter created in such collisions. In Pb+Pb and pp collisions at s NN = 5.02 TeV, measurements of the leading dijet transverse momentum (p T ) correlations are presented. Additionally, measurements in Pb+Pb collisions of the dijet pair nuclear modification factors projected along leading and subleading jet p T are made. The measurements are performed using the ATLAS detector at the LHC with 260 pb −1 of pp data collected in 2017 and 2.2 nb −1 of Pb+Pb data collected in 2015 and 2018. An unfolding procedure is applied to the two-dimensional leading and subleading jet p T distributions to account for experimental effects in the measurement of both jets. Results are provided for dijets with leading jet p T greater than 100 GeV. Measurements of the dijet-yield-normalized x J distributions in Pb+Pb collisions show an increased fraction of imbalanced jets compared to pp collisions; these measurements are in agreement with previous measurements of the same quantity at 2.76 TeV in the overlapping kinematic range. Measurements of the absolutely normalized dijet rate in Pb+Pb and pp collisions are also presented, and show that balanced dijets are significantly more suppressed than imbalanced dijets in Pb+Pb collisions. It is observed in the measurements of the pair nuclear modification factors that the subleading jets are significantly suppressed relative to leading jets with p T between 100 and 316 GeV for all centralities in Pb+Pb collisions.

檔案與連結 (1)

url
https://doi.org/10.1103/PhysRevC.107.054908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