Determination of the Top-Quark Pole Mass Using tt̅+1-Jet Events Collected with the ATLAS Experiment in 7 TeV pp Collisions

DSpace/Manakin Repository

Determination of the Top-Quark Pole Mass Using tt̅+1-Jet Events Collected with the ATLAS Experiment in 7 TeV pp Collisions

Show full item record

Title: Determination of the Top-Quark Pole Mass Using tt̅+1-Jet Events Collected with the ATLAS Experiment in 7 TeV pp Collisions
Author(s):
Aad, G.;
Abbott, B.;
Abdallah, J.;
Abdel Khalek, S.;
Abdinov, O.;
Aben, R.;
Abi, B.;
Izen, Joseph M.;
Leyton, Michael;
Meirose, Bernhard;
Namasivayam, Harisankar;
Reeves, Kendall;
ATLAS Collaboration
Date Created: 2015-10-19
Format: Text
Item Type: Article
Keywords: Show Keywords
Abstract: The normalized differential cross section for top-quark pair production in association with at least one jet is studied as a function of the inverse of the invariant mass of the tt̅ + 1-jet system. This distribution can be used for a precise determination of the top-quark mass since gluon radiation depends on the mass of the quarks. The experimental analysis is based on proton-proton collision data collected by the ATLAS detector at the LHC with a centre-of-mass energy of 7 TeV corresponding to an integrated luminosity of 4.6 fb⁻¹. The selected events were identified using the lepton+jets top-quark-pair decay channel, where lepton refers to either an electron or a muon. The observed distribution is compared to a theoretical prediction at next-to-leading-order accuracy in quantum chromodynamics using the pole-mass scheme. With this method, the measured value of the top-quark pole mass, m(^(pole)(t)), is: m({t}^{pole}) = 173.7 ± 1.5 (stat.) ± 1.4 (syst.){-0.5}^{+1.0} (theory) GeV. This result represents the most precise measurement of the top-quark pole mass to date.
Publisher: Springer
ISSN: 1029-8479
Source: Journal of High Energy Physics
Link to Related Resource: http://dx.doi.org/10.1007/JHEP10(2015)121
Persistent Link: http://hdl.handle.net/10735.1/4823
Bibliographic Citation: Aad, G., Abbott, B. et al. 2015, “Determination of the Top-Quark Pole Mass Using tt̅ + 1-Jet Events Collected with the ATLAS Experiment in 7 TeV pp Collisions.” Journal of High Energy Physics 2015(10), doi:10.1007/JHEP10(2015)121
Terms of Use: CC BY 4.0 (Attribution)
©2015 The Authors

Files in this item

Files Size Format View
NSM-2307-273704.59.pdf 1.005Mb PDF View/Open

This item appears in the following Collection(s)


Show full item record

CC BY 4.0 (Attribution) Except where otherwise noted, this item's license is described as CC BY 4.0 (Attribution)