Scholars@Duke
Journal cover image

Measurement of the flavour composition of dijet events in pp collisions at √s = 7 TeV with the ATLAS detector

Publication ,  Journal Article
Aad, G; Abajyan, T; Abbott, B; Abdallah, J; Khalek, SA; Abdelalim, AA; Abdinov, O; Aben, R; Abi, B; Abolins, M; Zeid, OSA; Abramowicz, H ...
Published in: European Physical Journal C
February 12, 2013
Published version (DOI)

This paper describes a measurement of the flavour composition of dijet events produced in pp collisions at √s = 7 TeV using the ATLAS detector. The measurement uses the full 2010 data sample, corresponding to an integrated luminosity of 39 pb−1. Six possible combinations of light, charm and bottom jets are identified in the dijet events, where the jet flavour is defined by the presence of bottom, charm or solely light flavour hadrons in the jet. Kinematic variables, based on the properties of displaced decay vertices and optimised for jet flavour identification, are used in a multidimensional template fit to measure the fractions of these dijet flavour states as functions of the leading jet transverse momentum in the range 40 GeV to 500 GeV and jet rapidity |y| < 2.1. The fit results agree with the predictions of leading- and next-to-leading-order calculations, with the exception of the dijet fraction composed of bottom and light flavour jets, which is underestimated by all models at large transverse jet momenta. The ability to identify jets containing two b-hadrons, originating from e.g. gluon splitting, is demonstrated. The difference between bottom jet production rates in leading and subleading jets is consistent with the next-to-leading-order predictions.

Duke Scholars

Alfred T. Goshaw
Author Alfred T. Goshaw Physics
Ayana T. Arce
Author Ayana T. Arce Physics
Ashutosh V. Kotwal
Author Ashutosh V. Kotwal Physics
Seog Oh
Author Seog Oh Physics
Altmetric Attention Stats
Dimensions Citation Stats

Published In

European Physical Journal C

DOI

10.1140/epjc/s10052-013-2301-5

EISSN

1434-6052

ISSN

1434-6044

Publication Date

February 12, 2013

Volume

73

Issue

2

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
Aad, G., Abajyan, T., Abbott, B., Abdallah, J., Khalek, S. A., Abdelalim, A. A., … Arik, M. (2013). Measurement of the flavour composition of dijet events in pp collisions at √s = 7 TeV with the ATLAS detector. European Physical Journal C, 73(2). https://doi.org/10.1140/epjc/s10052-013-2301-5
Aad, G., T. Abajyan, B. Abbott, J. Abdallah, S. A. Khalek, A. A. Abdelalim, O. Abdinov, et al. “Measurement of the flavour composition of dijet events in pp collisions at √s = 7 TeV with the ATLAS detector.” European Physical Journal C 73, no. 2 (February 12, 2013). https://doi.org/10.1140/epjc/s10052-013-2301-5.
Aad G, Abajyan T, Abbott B, Abdallah J, Khalek SA, Abdelalim AA, et al. Measurement of the flavour composition of dijet events in pp collisions at √s = 7 TeV with the ATLAS detector. European Physical Journal C. 2013 Feb 12;73(2).
Aad, G., et al. “Measurement of the flavour composition of dijet events in pp collisions at √s = 7 TeV with the ATLAS detector.” European Physical Journal C, vol. 73, no. 2, Feb. 2013. Scopus, doi:10.1140/epjc/s10052-013-2301-5.
Aad G, Abajyan T, Abbott B, Abdallah J, Khalek SA, Abdelalim AA, Abdinov O, Aben R, Abi B, Abolins M, Zeid OSA, Abramowicz H, Abreu H, Acerbi E, Acharya BS, Adamczyk L, Adams DL, Addy TN, Adelman J, Adomeit S, Adragna P, Adye T, Aefsky S, Aguilar-Saavedra JA, Agustoni M, Aharrouche M, Ahlen SP, Ahles F, Ahmad A, Ahsan M, Aielli G, Akdogan T, Åkesson TPA, Akimoto G, Akimov AV, Alam MS, Alam MA, Albert J, Albrand S, Aleksa M, Aleksandrov IN, Alessandria F, Alexa C, Alexander G, Alexandre G, Alexopoulos T, Alhroob M, Aliev M, Alimonti G, Alison J, Allbrooke BMM, Allport PP, Allwood-Spiers SE, Almond J, Aloisio A, Alon R, Alonso A, Alonso F, Gonzalez BA, Alviggi MG, Amako K, Amelung C, Ammosov VV, Dos Santos SPA, Amorim A, Amram N, Anastopoulos C, Ancu LS, Andari N, Andeen T, Anders CF, Anders G, Anderson KJ, Andreazza A, Andrei V, Andrieux ML, Anduaga XS, Anger P, Angerami A, Anghinolfi F, Anisenkov A, Anjos N, Annovi A, Antonaki A, Antonelli M, Antonov A, Antos J, Anulli F, Aoki M, Aoun S, Bella LA, Apolle R, Arabidze G, Aracena I, Arai Y, Arce ATH, Arfaoui S, Arguin JF, Arik E, Arik M. Measurement of the flavour composition of dijet events in pp collisions at √s = 7 TeV with the ATLAS detector. European Physical Journal C. 2013 Feb 12;73(2).
Journal cover image

Published In

European Physical Journal C

DOI

10.1140/epjc/s10052-013-2301-5

EISSN

1434-6052

ISSN

1434-6044

Publication Date

February 12, 2013

Volume

73

Issue

2

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