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

Serguei Chatrchyan; Lukas Bäni; Pierluigi Bortignon; Marco A Buchmann; Bruno Casal Laraña; Nicolas Chanon; Zhiling Chen; Amanda Deisher; Günther Dissertori; Michael Dittmar; Marc Dünser; Jürg Eugster; Klaus Freudenreich; Christoph Grab; Pierre Lecomte; Werner Lustermann; Andrea C Marini; Pablo Martinez Ruiz Del Arbol; Niklas Mohr; Filip Moortgat; Christoph Nägeli; Pascal Nef; Francesca Nessi-Tedaldi; Luc Pape; Felicitas Pauss; Marco Peruzzi; Frédéric J Ronga; Marco Rossini; Leonardo Sala; Ann-Karin Sanchez; Marie-Christine Sawley; Andrey Starodumov; Benjamin Stieger; Maiko Takahashi; Ludwig Tauscher; Alessandro Thea; Konstantinos Theofilatos; Daniel Treille; Christina Urscheler; Rainer Wallny; Hannsjörg A Weber; Lukas Wehrli; CMS Collaboration

doi:10.1007/JHEP08(2012)130

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

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

Serguei Chatrchyan, Lukas Bäni, Pierluigi Bortignon, Marco A Buchmann, Bruno Casal Laraña, Nicolas Chanon, Zhiling Chen, Amanda Deisher, Günther Dissertori, Michael Dittmar, …

The journal of high energy physics, Vol.2012(8), 130

08/01/2012

DOI: 10.1007/JHEP08(2012)130

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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.

High Energy Physics

Experiment

Hadron

Hadron Scattering

Details

Title: Subtitle: Measurement of the underlying event activity in pp collisions at √s=0.9 and 7 TeV with the novel jet-area/median approach
Creators: Serguei Chatrchyan
Lukas Bäni
Pierluigi Bortignon
Marco A Buchmann
Bruno Casal Laraña
Nicolas Chanon
Zhiling Chen
Amanda Deisher
Günther Dissertori
Michael Dittmar
Marc Dünser
Jürg Eugster
Klaus Freudenreich
Christoph Grab
Pierre Lecomte
Werner Lustermann
Andrea C Marini
Pablo Martinez Ruiz Del Arbol
Niklas Mohr
Filip Moortgat
Christoph Nägeli
Pascal Nef
Francesca Nessi-Tedaldi
Luc Pape
Felicitas Pauss
Marco Peruzzi
Frédéric J Ronga
Marco Rossini
Leonardo Sala
Ann-Karin Sanchez
Marie-Christine Sawley
Andrey Starodumov
Benjamin Stieger
Maiko Takahashi
Ludwig Tauscher
Alessandro Thea
Konstantinos Theofilatos
Daniel Treille
Christina Urscheler
Rainer Wallny
Hannsjörg A Weber - RWTH Aachen University
Lukas Wehrli
CMS Collaboration
Contributors: Y Onel (Contributor) - University of Iowa, Physics and Astronomy
Resource Type: Journal article
Publication Details: The journal of high energy physics, Vol.2012(8), 130
Publisher: ETH Zurich
DOI: 10.1007/JHEP08(2012)130
ISSN: 1126-6708
eISSN: 1029-8479
Language: English
Date published: 08/01/2012
Academic Unit: Physics and Astronomy
Record Identifier: 9984199747602771

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