Measurement of the underlying event activity in pp collisions at s√=0.9 and 7 TeV with the novel jet-area/median approach

Authors

The CMS Collaboration
S. Chatrchyan, Yerevan Physics Institute
V. Khachatryan, Yerevan Physics Institute
Marc M. Baarmand, Florida Institute of Technology
B. Dorney, Florida Institute of Technology
Marcus Hohlmann, Florida Institute of Technology
Himali Kalakhety, Florida Institute of Technology
Igor Vodopiyanov, Florida Institute of Technology

Document Type

Article

Publication Title

Journal of High Energy Physics

Abstract

The first measurement of the charged component of the underlying event using the novel “jet-area/median” approach is presented for proton-proton collisions at centre-of-mass energies of 0.9 and 7 TeV. The data were recorded in 2010 with the CMS experiment at the LHC. A new observable, sensitive to soft particle production, is introduced and investigated inclusively and as a function of the event scale defined by the transverse momentum of the leading jet. Various phenomenological models are compared to data, with and without corrections for detector effects. None of the examined models describe the data satisfactorily.

DOI

doi.org/10.1007/JHEP08(2012)130

Publication Date

8-2012

Recommended Citation

The CMS collaboration., Chatrchyan, S., Khachatryan, V. et al. Measurement of the underlying event activity in pp collisions at s√=0.9 and 7 TeV with the novel jet-area/median approach. J. High Energ. Phys. 2012, 130 (2012). https://doi.org/10.1007/JHEP08(2012)130