| Issue |
EPJ Web Conf.
Volume 141, 2017
XLVI International Symposium on Multiparticle Dynamics (ISMD 2016)
|
|
|---|---|---|
| Article Number | 08007 | |
| Number of page(s) | 4 | |
| Section | Poster Flash Talks | |
| DOI | https://doi.org/10.1051/epjconf/201714108007 | |
| Published online | 12 April 2017 | |
https://doi.org/10.1051/epjconf/201714108007
Measurement of bottomonium states in pp, pPb and PbPb collisions at 2.76 TeV from CMS
Korea University, 145 Anam-ro, Seonbuk-gu, Seoul, Republic of Korea
a e-mail: jaebeom.park@cern.ch
Published online: 12 April 2017
The bottomonium states are one of the cleanest probes to study the characteristics of the quark-gluon plasma (QGP) as they are produced through hard scattering at the early stage of the collision. Their relative production cross section in PbPb collisions compared to pp collisions, the nuclear modification factor RAA, has been studied and strong suppression was found in PbPb collisions. The RAA has been obtained in centrality intervals for ϒ(1S) & ϒ(2S) and also reported as a function of pT and rapidity. Also the yield ratios of the excited states ϒ(nS) compared to the ground state ϒ(1S) in both pp and PbPb collisions are combined to form the double ratio, which is equivalent to the ratio of the nuclear modification factor RAA. This quantity has been studied for the two excited states ϒ(2S) and ϒ(3S) in pPb and PbPb collisions.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.