https://scholars.lib.ntu.edu.tw/handle/123456789/574895
標題: | Centrality and pseudorapidity dependence of the transverse energy density in pPb collisions at √sNN = 5.02 TeV | 作者: | Sirunyan A.M. et al. Tumasyan, A. Adam, W. Ambrogi, F. Asilar, E. Bergauer, T. Brandstetter, J. Brondolin, E. Dragicevic, M. Erö, J. Del Valle, A.E. Flechl, M. Frühwirth, R. Ghete, V.M. Hrubec, J. Jeitler, M. Krammer, N. Krätschmer, I. Liko, D. Madlener, T. Mikulec, I. PAO-TI CHANG KAI-FENG CHEN WEI-SHU HOU RONG-SHYANG LU Stathes Paganis |
公開日期: | 2019 | 卷: | 100 | 期: | 2 | 來源出版物: | Physical Review C | 摘要: | 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. ? 2019 CERN, for the CMS Collaboration. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85071933340&doi=10.1103%2fPhysRevC.100.024902&partnerID=40&md5=990b366bbc2dc999c66d8315d9a77408 https://scholars.lib.ntu.edu.tw/handle/123456789/574895 |
ISSN: | 24699985 | DOI: | 10.1103/PhysRevC.100.024902 |
顯示於: | 物理學系 |
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