Centrality and pseudorapidity dependence of the transverse energy density in pPb collisions ats root s(NN)=5.02 TeV
The almost hermetic coverage of the CMS detector is used to measure the distribution of transverse energy, ET, over 13.2 units of pseudorapidity, η, for pPb collisions at a center-of-mass energy per nucleon pair of √sNN = 5.02 TeV. The huge angular acceptance exploits the fact that the CASTOR calo...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English English |
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American Physical Society
2019
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| Online Access: | http://irep.iium.edu.my/80162/ http://irep.iium.edu.my/80162/19/80162_Centrality%20and%20pseudorapidity%20dependence%20of%20the%20transverse_article%20%28%20CMS%20project%29.pdf http://irep.iium.edu.my/80162/2/80162_Centrality%20and%20pseudorapidity%20dependence_scopus.pdf http://irep.iium.edu.my/80162/3/80162_Centrality%20and%20pseudorapidity%20dependence_wos.pdf |
| _version_ | 1848788910847557632 |
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| author | Sirunyan, A. M. Tumasyan, A. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli |
| author_facet | Sirunyan, A. M. Tumasyan, A. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli |
| author_sort | Sirunyan, A. M. |
| building | IIUM Repository |
| collection | Online Access |
| description | The almost hermetic coverage of the CMS detector is used to measure the distribution of transverse energy,
ET, over 13.2 units of pseudorapidity, η, for pPb collisions at a center-of-mass energy per nucleon pair of √sNN =
5.02 TeV. The huge angular acceptance exploits the fact that the CASTOR calorimeter at −6.6 <η< −5.2 is
effectively present on both sides of the colliding system because of a switch in the proton-going and lead-going
beam directions. This wide acceptance enables the study of correlations between well-separated angular regions
and makes the measurement a particularly powerful test of event generators. For minimum bias pPb collisions
the maximum value of dET/dη is 22 GeV, which implies an ET per participant nucleon pair comparable to that
of peripheral PbPb collisions at √sNN = 2.76 TeV. The increase of dET/dη with centrality is much stronger for
the lead-going side than for the proton-going side. The η dependence of dET/dη is sensitive to the η range in
which the centrality variable is defined. Several modern generators are compared to these results but none is
able to capture all aspects of the η and centrality dependence of the data and the correlations observed between
different η regions |
| first_indexed | 2025-11-14T17:48:20Z |
| format | Article |
| id | iium-80162 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English English |
| last_indexed | 2025-11-14T17:48:20Z |
| publishDate | 2019 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-801622020-08-12T03:37:25Z http://irep.iium.edu.my/80162/ Centrality and pseudorapidity dependence of the transverse energy density in pPb collisions ats root s(NN)=5.02 TeV Sirunyan, A. M. Tumasyan, A. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Q Science (General) QC Physics The almost hermetic coverage of the CMS detector is used to measure the distribution of transverse energy, ET, over 13.2 units of pseudorapidity, η, for pPb collisions at a center-of-mass energy per nucleon pair of √sNN = 5.02 TeV. The huge angular acceptance exploits the fact that the CASTOR calorimeter at −6.6 <η< −5.2 is effectively present on both sides of the colliding system because of a switch in the proton-going and lead-going beam directions. This wide acceptance enables the study of correlations between well-separated angular regions and makes the measurement a particularly powerful test of event generators. For minimum bias pPb collisions the maximum value of dET/dη is 22 GeV, which implies an ET per participant nucleon pair comparable to that of peripheral PbPb collisions at √sNN = 2.76 TeV. The increase of dET/dη with centrality is much stronger for the lead-going side than for the proton-going side. The η dependence of dET/dη is sensitive to the η range in which the centrality variable is defined. Several modern generators are compared to these results but none is able to capture all aspects of the η and centrality dependence of the data and the correlations observed between different η regions American Physical Society 2019-08-01 Article PeerReviewed application/pdf en http://irep.iium.edu.my/80162/19/80162_Centrality%20and%20pseudorapidity%20dependence%20of%20the%20transverse_article%20%28%20CMS%20project%29.pdf application/pdf en http://irep.iium.edu.my/80162/2/80162_Centrality%20and%20pseudorapidity%20dependence_scopus.pdf application/pdf en http://irep.iium.edu.my/80162/3/80162_Centrality%20and%20pseudorapidity%20dependence_wos.pdf Sirunyan, A. M. and Tumasyan, A. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2019) Centrality and pseudorapidity dependence of the transverse energy density in pPb collisions ats root s(NN)=5.02 TeV. Physical Review C, 100 (2). pp. 1-20. ISSN 2469-9985 E-ISSN 2469-9993 https://journals.aps.org/prc/pdf/10.1103/PhysRevC.100.024902 10.1103/PhysRevC.100.024902 |
| spellingShingle | Q Science (General) QC Physics Sirunyan, A. M. Tumasyan, A. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Centrality and pseudorapidity dependence of the transverse energy density in pPb collisions ats root s(NN)=5.02 TeV |
| title | Centrality and pseudorapidity dependence of the transverse energy density in pPb collisions ats root s(NN)=5.02 TeV |
| title_full | Centrality and pseudorapidity dependence of the transverse energy density in pPb collisions ats root s(NN)=5.02 TeV |
| title_fullStr | Centrality and pseudorapidity dependence of the transverse energy density in pPb collisions ats root s(NN)=5.02 TeV |
| title_full_unstemmed | Centrality and pseudorapidity dependence of the transverse energy density in pPb collisions ats root s(NN)=5.02 TeV |
| title_short | Centrality and pseudorapidity dependence of the transverse energy density in pPb collisions ats root s(NN)=5.02 TeV |
| title_sort | centrality and pseudorapidity dependence of the transverse energy density in ppb collisions ats root s(nn)=5.02 tev |
| topic | Q Science (General) QC Physics |
| url | http://irep.iium.edu.my/80162/ http://irep.iium.edu.my/80162/ http://irep.iium.edu.my/80162/ http://irep.iium.edu.my/80162/19/80162_Centrality%20and%20pseudorapidity%20dependence%20of%20the%20transverse_article%20%28%20CMS%20project%29.pdf http://irep.iium.edu.my/80162/2/80162_Centrality%20and%20pseudorapidity%20dependence_scopus.pdf http://irep.iium.edu.my/80162/3/80162_Centrality%20and%20pseudorapidity%20dependence_wos.pdf |