Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/5373
Title: Study of the underlying event at forward rapidity in pp collisions at ?s = 0.9, 2.76, and 7 TeV
Authors: CMS Collaboration
Karapınar, Güler
Keywords: Proton-proton collision
Energy density
Transverse momentum
Pseudorapidity
Publisher: Springer Verlag
Source: Chatrchyan, S, Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Aguilo, E., Bergauer, T., ...CMS Collaboration (2013). Study of the underlying event at forward rapidity in pp collisions at √s = 0.9, 2.76, and 7 TeV. Journal of High Energy Physics, 2013(4). doi:10.1007/JHEP04(2013)072
Abstract: The underlying event activity in proton-proton collisions at forward pseudo-rapidity (—6.6 < η < —5.2) is studied with the CMS detector at the LHC, using a novel observable: the ratio of the forward energy density, dE/dη, for events with a charged-particle jet produced at central pseudorapidity (|ηjet| < 2) to the forward energy density for inclusive events. This forward energy density ratio is measured as a function of the central jet transverse momentum, pT, at three different pp centre-of-mass energies (√s = 0.9, 2.76, and 7TeV). In addition, the √s evolution of the forward energy density is studied in inclusive events and in events with a central jet. The results are compared to those of Monte Carlo event generators for pp collisions and are discussed in terms of the underlying event. Whereas the dependence of the forward energy density ratio on jet pT at each ^fs separately can be well reproduced by some models, all models fail to simultaneously describe the increase of the forward energy density with √s in both inclusive events and in events with a central jet. © 2013, CERN.
URI: http://doi.org/10.1007/JHEP04(2013)072
http://hdl.handle.net/11147/5373
ISSN: 1029-8479
Appears in Collections:Mathematics / Matematik
Rectorate / Rektörlük
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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