Cover Image

Charged-particle nuclear modification factors in PbPb and pPb collisions at √sNN=5.02 TeV

The spectra of charged particles produced within the pseudorapidity window |η| < 1 at √ sNN = 5.02 TeV are measured using 404 µb −1 of PbPb and 27.4 pb−1 of pp data collected by the CMS detector at the LHC in 2015. The spectra are presented over the transverse momentum ranges spanning 0.5 &...

Full description

Saved in:
Bibliographic Details
Main Authors: Khachatryan, Vardan, Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Aşilar, Ece, Bergauer, Thomas, Md. Ali, Mohd. Adli
Format: Article
Language:English
English
Published: Springer Verlag 2017
Subjects:
Q Science (General)
QC Physics
Online Access:http://irep.iium.edu.my/62596/2/Charged-particle%20nuclear%20modification%20factors%20in%20PbPb_scopus.pdf
http://irep.iium.edu.my/62596/13/62596_Charged-particle%20nuclear%20modification%20factors.pdf
http://irep.iium.edu.my/62596/
https://link.springer.com/article/10.1007%2FJHEP04%282017%29039
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.iium.irep.62596
record_format dspace
spelling my.iium.irep.62596 http://irep.iium.edu.my/62596/ Charged-particle nuclear modification factors in PbPb and pPb collisions at √sNN=5.02 TeV Khachatryan, Vardan Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Aşilar, Ece Bergauer, Thomas Md. Ali, Mohd. Adli Q Science (General) QC Physics The spectra of charged particles produced within the pseudorapidity window |η| < 1 at √ sNN = 5.02 TeV are measured using 404 µb −1 of PbPb and 27.4 pb−1 of pp data collected by the CMS detector at the LHC in 2015. The spectra are presented over the transverse momentum ranges spanning 0.5 < pT < 400 GeV in pp and 0.7 < pT < 400 GeV in PbPb collisions. The corresponding nuclear modification factor, RAA, is measured in bins of collision centrality. The RAA in the 5% most central collisions shows a maximal suppression by a factor of 7–8 in the pT region of 6–9 GeV. This dip is followed by an increase, which continues up to the highest pT measured, and approaches unity in the vicinity of pT = 200 GeV. The RAA is compared to theoretical predictions and earlier experimental results at lower collision energies. The newly measured pp spectrum is combined with the pPb spectrum previously published by the CMS Collaboration to construct the pPb nuclear modification factor, RpA, up to 120 GeV. For pT > 20 GeV, RpA exhibits weak momentum dependence and shows a moderate enhancement above unity. Springer Verlag 2017-04-01 Article PeerReviewed application/pdf en http://irep.iium.edu.my/62596/2/Charged-particle%20nuclear%20modification%20factors%20in%20PbPb_scopus.pdf application/pdf en http://irep.iium.edu.my/62596/13/62596_Charged-particle%20nuclear%20modification%20factors.pdf Khachatryan, Vardan and Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Aşilar, Ece and Bergauer, Thomas and Md. Ali, Mohd. Adli (2017) Charged-particle nuclear modification factors in PbPb and pPb collisions at √sNN=5.02 TeV. Journal of High Energy Physics, 2017 (4). pp. 1-36. ISSN 1029-8479 https://link.springer.com/article/10.1007%2FJHEP04%282017%29039 10.1007/JHEP04(2017)039
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
English
topic Q Science (General)
QC Physics
spellingShingle Q Science (General)
QC Physics
Khachatryan, Vardan
Sirunyan, A. M.
Tumasyan, A. R.
Adam, Wolfgang
Aşilar, Ece
Bergauer, Thomas
Md. Ali, Mohd. Adli
Charged-particle nuclear modification factors in PbPb and pPb collisions at √sNN=5.02 TeV
description The spectra of charged particles produced within the pseudorapidity window |η| < 1 at √ sNN = 5.02 TeV are measured using 404 µb −1 of PbPb and 27.4 pb−1 of pp data collected by the CMS detector at the LHC in 2015. The spectra are presented over the transverse momentum ranges spanning 0.5 < pT < 400 GeV in pp and 0.7 < pT < 400 GeV in PbPb collisions. The corresponding nuclear modification factor, RAA, is measured in bins of collision centrality. The RAA in the 5% most central collisions shows a maximal suppression by a factor of 7–8 in the pT region of 6–9 GeV. This dip is followed by an increase, which continues up to the highest pT measured, and approaches unity in the vicinity of pT = 200 GeV. The RAA is compared to theoretical predictions and earlier experimental results at lower collision energies. The newly measured pp spectrum is combined with the pPb spectrum previously published by the CMS Collaboration to construct the pPb nuclear modification factor, RpA, up to 120 GeV. For pT > 20 GeV, RpA exhibits weak momentum dependence and shows a moderate enhancement above unity.
format Article
author Khachatryan, Vardan
Sirunyan, A. M.
Tumasyan, A. R.
Adam, Wolfgang
Aşilar, Ece
Bergauer, Thomas
Md. Ali, Mohd. Adli
author_facet Khachatryan, Vardan
Sirunyan, A. M.
Tumasyan, A. R.
Adam, Wolfgang
Aşilar, Ece
Bergauer, Thomas
Md. Ali, Mohd. Adli
author_sort Khachatryan, Vardan
title Charged-particle nuclear modification factors in PbPb and pPb collisions at √sNN=5.02 TeV
title_short Charged-particle nuclear modification factors in PbPb and pPb collisions at √sNN=5.02 TeV
title_full Charged-particle nuclear modification factors in PbPb and pPb collisions at √sNN=5.02 TeV
title_fullStr Charged-particle nuclear modification factors in PbPb and pPb collisions at √sNN=5.02 TeV
title_full_unstemmed Charged-particle nuclear modification factors in PbPb and pPb collisions at √sNN=5.02 TeV
title_sort charged-particle nuclear modification factors in pbpb and ppb collisions at √snn=5.02 tev
publisher Springer Verlag
publishDate 2017
url http://irep.iium.edu.my/62596/2/Charged-particle%20nuclear%20modification%20factors%20in%20PbPb_scopus.pdf
http://irep.iium.edu.my/62596/13/62596_Charged-particle%20nuclear%20modification%20factors.pdf
http://irep.iium.edu.my/62596/
https://link.springer.com/article/10.1007%2FJHEP04%282017%29039
_version_ 1643617077537275904
score 13.211869

Similar Items