Measurement of Colour Flow with the Jet Pull Angle in tt̅ Events Using the ATLAS Detector a √s̅ = 8 TeV

Date

2015-09-26

Authors

Aad, G.
Abbott, B.
Abdallah, J.
Abdinov, O.
Aben, R.
Abolins, M.
AbouZeid, O. S.
Izen, Joseph M.
Leyton, Michael
Meirose, Bernhard

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Journal Title

Journal ISSN

Volume Title

Publisher

Elsevier Science B.V.

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Abstract

The distribution and orientation of energy inside jets is predicted to be an experimental handle on colour connections between the hard-scatter quarks and gluons initiating the jets. This Letter presents a measurement of the distribution of one such variable, the jet pull angle. The pull angle is measured for jets produced in tt̅ events with one W boson decaying leptonically and the other decaying to jets using 20.3 fb⁻¹ of data recorded with the ATLAS detector at a centre-of-mass energy of √s̅ = 8 TeV at the LHC. The jet pull angle distribution is corrected for detector resolution and acceptance effects and is compared to various models.

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Keywords

Gluons, Electrons, Jets (Nuclear physics), Quarks

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Rights

CC BY 4.0 (Attribution), ©2015 CERN, for the ATLAS Collaboration

Citation