Scholars@Duke publication: Measurement of the underlying event in jet events from 7 TeV proton–proton collisions with the ATLAS detector

Measurement of the underlying event in jet events from 7 TeV proton–proton collisions with the ATLAS detector

Publication , Journal Article

The ATLAS Collaboration; Aad, G; Abajyan, T; Abbott, B; Abdallah, J; Khalek, SA; Abdinov, O; Aben, R; Abi, B; Abolins, M; AbouZeid, OS ...

Published in: European Physical Journal C

August 1, 2014

Published version (DOI)

Distributions sensitive to the underlying event in QCD jet events have been measured with the ATLAS detector at the LHC, based on (Formula presented.) of proton–proton collision data collected at a centre-of-mass energy of 7 (Formula presented.). Charged-particle mean (Formula presented.) and densities of all-particle (Formula presented.) and charged-particle multiplicity and (Formula presented.) have been measured in regions azimuthally transverse to the hardest jet in each event. These are presented both as one-dimensional distributions and with their mean values as functions of the leading-jet transverse momentum from 20 to 800 (Formula presented.). The correlation of charged-particle mean (Formula presented.) with charged-particle multiplicity is also studied, and the (Formula presented.) densities include the forward rapidity region; these features provide extra data constraints for Monte Carlo modelling of colour reconnection and beam-remnant effects respectively. For the first time, underlying event observables have been computed separately for inclusive jet and exclusive dijet event selections, allowing more detailed study of the interplay of multiple partonic scattering and QCD radiation contributions to the underlying event. Comparisons to the predictions of different Monte Carlo models show a need for further model tuning, but the standard approach is found to generally reproduce the features of the underlying event in both types of event selection.

Duke Scholars

Author Alfred T. Goshaw Physics

Author Ayana T. Arce Physics

Author Ashutosh V. Kotwal Physics

Author Mark C. Kruse Physics

Author Seog Oh Physics

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Published In

European Physical Journal C

DOI

10.1140/epjc/s10052-014-2965-5

EISSN

1434-6052

ISSN

1434-6044

Publication Date

August 1, 2014

Volume

Issue

Start / End Page

1 / 29

Related Subject Headings

Nuclear & Particles Physics
5107 Particle and high energy physics
5102 Atomic, molecular and optical physics
5101 Astronomical sciences
0206 Quantum Physics
0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics

Citation

APA

Chicago

ICMJE

MLA

NLM

The ATLAS Collaboration, ., Aad, G., Abajyan, T., Abbott, B., Abdallah, J., Khalek, S. A., … Armbruster, A. J. (2014). Measurement of the underlying event in jet events from 7 TeV proton–proton collisions with the ATLAS detector. European Physical Journal C, 74(8), 1–29. https://doi.org/10.1140/epjc/s10052-014-2965-5

The ATLAS Collaboration, Shivanand P., G. Aad, T. Abajyan, B. Abbott, J. Abdallah, S. A. Khalek, O. Abdinov, et al. “Measurement of the underlying event in jet events from 7 TeV proton–proton collisions with the ATLAS detector.” European Physical Journal C 74, no. 8 (August 1, 2014): 1–29. https://doi.org/10.1140/epjc/s10052-014-2965-5.

The ATLAS Collaboration, Aad G, Abajyan T, Abbott B, Abdallah J, Khalek SA, et al. Measurement of the underlying event in jet events from 7 TeV proton–proton collisions with the ATLAS detector. European Physical Journal C. 2014 Aug 1;74(8):1–29.

The ATLAS Collaboration, Shivanand P., et al. “Measurement of the underlying event in jet events from 7 TeV proton–proton collisions with the ATLAS detector.” European Physical Journal C, vol. 74, no. 8, Aug. 2014, pp. 1–29. Scopus, doi:10.1140/epjc/s10052-014-2965-5.

The ATLAS Collaboration, Aad G, Abajyan T, Abbott B, Abdallah J, Khalek SA, Abdinov O, Aben R, Abi B, Abolins M, AbouZeid OS, Abramowicz H, Abreu H, Abulaiti Y, Acharya BS, Adamczyk L, Adams DL, Addy TN, Adelman J, Adomeit S, Adye T, Agatonovic-Jovin T, Aguilar-Saavedra JA, Agustoni M, Ahlen SP, Ahmadov F, Aielli G, Åkesson TPA, Akimoto G, Akimov AV, Albert J, Albrand S, Verzini MJA, Aleksa M, Aleksandrov IN, Alexa C, Alexander G, Alexandre G, Alexopoulos T, Alhroob M, Alimonti G, Alio L, Alison J, Allbrooke BMM, Allison LJ, Allport PP, Allwood-Spiers SE, Almond J, Aloisio A, Alon R, Alonso A, Alonso F, Alpigiani C, Altheimer A, Gonzalez BA, Alviggi MG, Amako K, Coutinho YA, Amelung C, Amidei D, Ammosov VV, Santos SPAD, Amorim A, Amoroso S, Amram N, Amundsen G, Anastopoulos C, Ancu LS, Andari N, Andeen T, Anders CF, Anders G, Anderson KJ, Andreazza A, Andrei V, Anduaga XS, Angelidakis S, Anger P, Angerami A, Anghinolfi F, Anisenkov AV, Anjos N, Annovi A, Antonaki A, Antonelli M, Antonov A, Antos J, Anulli F, Aoki M, Bella LA, Apolle R, Arabidze G, Aracena I, Arai Y, Araque JP, Arce ATH, Arguin JF, Argyropoulos S, Arik M, Armbruster AJ. Measurement of the underlying event in jet events from 7 TeV proton–proton collisions with the ATLAS detector. European Physical Journal C. 2014 Aug 1;74(8):1–29.

Published In

European Physical Journal C

DOI

10.1140/epjc/s10052-014-2965-5

EISSN

1434-6052

ISSN

1434-6044

Publication Date

August 1, 2014

Volume

Issue

Start / End Page

1 / 29

Related Subject Headings

Nuclear & Particles Physics
5107 Particle and high energy physics
5102 Atomic, molecular and optical physics
5101 Astronomical sciences
0206 Quantum Physics
0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics