Bibcode
Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Hartl, C.; Hörmann, N.; Hrubec, J.; Jeitler, M.; Knünz, V.; König, A.; Krammer, M.; Krätschmer, I.; Liko, D.; Matsushita, T.; Mikulec, I.; Rabady, D.; Rahbaran, B.; Rohringer, H.; Schieck, J.; Schöfbeck, R.; Strauss, J.; Treberer-Treberspurg, W.; Waltenberger, W.; Wulz, C.-E.; Mossolov, V.; Shumeiko, N.; Suarez Gonzalez, J.; Alderweireldt, S.; Cornelis, T.; de Wolf, E. A.; Janssen, X.; Knutsson, A.; Lauwers, J.; Luyckx, S.; Ochesanu, S.; Rougny, R.; van de Klundert, M.; van Haevermaet, H.; van Mechelen, P.; van Remortel, N.; van Spilbeeck, A.; Abu Zeid, S.; Blekman, F.; D'Hondt, J.; Daci, N.; de Bruyn, I.; Deroover, K.; Heracleous, N.; Keaveney, J.; Lowette, S.; Moreels, L.; Olbrechts, A.; Python, Q.; Strom, D.; Tavernier, S.; van Doninck, W.; van Mulders, P.; van Onsem, G. P.; van Parijs, I.; Barria, P.; Caillol, C.; Clerbaux, B.; de Lentdecker, G.; Delannoy, H.; Dobur, D.; Fasanella, G.; Favart, L.; Gay, A. P. R.; Grebenyuk, A.; Lenzi, T.; Léonard, A.; Maerschalk, T.; Mohammadi, A.; Perniè, L.; Randle-Conde, A.; Reis, T.; Seva, T.; Vander Velde, C.; Vanlaer, P.; Wang, J.; Yonamine, R.; Zenoni, F.; Zhang, F.; Beernaert, K.; Benucci, L.; Cimmino, A.; Crucy, S.; Fagot, A.; Garcia, G.; Gul, M. et al.
Bibliographical reference
Journal of High Energy Physics, Volume 2015, article id.137, 33 pp.
Advertised on:
9
2015
Citations
12
Refereed citations
7
Description
A measurement of the underlying event (UE) activity in proton-proton
collisions is performed using events with charged-particle jets produced
in the central pseudorapidity region (| η jet| < 2)
and with transverse momentum 1 ≤ p {T/jet} <
100 GeV. The analysis uses a data sample collected at a centre-of-mass
energy of 2.76 TeV with the CMS experiment at the LHC. The UE activity
is measured as a function of p {T/jet} in terms of
the average multiplicity and scalar sum of transverse momenta ( p
T) of charged particles, with | η| < 2 and p
T > 0.5 GeV, in the azimuthal region transverse to the
highest p T jet direction. By further dividing the transverse
region into two regions of smaller and larger activity, various
components of the UE activity are separated. The measurements are
compared to previous results at 0.9 and 7 TeV, and to predictions of
several Monte Carlo event generators, providing constraints on the
modelling of the UE dynamics. [Figure not available: see fulltext.]