Measurement of colour flow with the jet pull angle in $t\bar{t}$ events using the ATLAS detector at $\sqrt{s}=8$ TeV - INSPIRE

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Measurement of colour flow with the jet pull angle in $t\bar{t}$ events using the ATLAS detector at $\sqrt{s}=8$ TeV

ATLAS

Collaboration

Jun 18, 2015

19 pages

Published in:

Phys.Lett.B 750 (2015) 475-493

Published: Sep 24, 2015

e-Print:

1506.05629 [hep-ex]

DOI:

10.1016/j.physletb.2015.09.051

Report number:

CERN-PH-EP-2015-128

Experiments:

CERN-LHC-ATLAS

View in:

reference search59 citations

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Abstract: (Elsevier)

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 tt¯ 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 s=8 TeV at the LHC. The jet pull angle distribution is corrected for detector resolution and acceptance effects and is compared to various models.

Note:

15 pages plus author list + cover pages (31 pages total), 5 figures, 4 tables, published in Physics Letters B (2015) 475-493. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2014-09/

p p: scattering
p p: colliding beams
top: pair production
W: leptonic decay
W: hadronic decay
bottom: particle identification
detector: resolution
color: flow
ATLAS
CERN LHC Coll

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