Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/115361
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Type: | Journal article |
Title: | Determination of the top-quark pole mass using t¯t + 1-jet events collected with the ATLAS experiment in 7TeV pp collisions |
Other Titles: | Determination of the top-quark pole mass using t -bar t + 1-jet events collected with the ATLAS experiment in 7TeV pp collisions |
Author: | The ATLAS collaboration, Aad, G. Abbott, B. Abdallah, J. Abdel Khalek, S. Abdinov, O. Aben, R. Abi, B. Abolins, M. AbouZeid, O. Abramowicz, H. Abreu, H. Abreu, R. Abulaiti, Y. Acharya, B. Adamczyk, L. Adams, D. Adelman, J. Adomeit, S. Adye, T. et al. |
Citation: | The Journal of High Energy Physics, 2015; 2015(10):121-0-121-40 |
Publisher: | Springer-Verlag |
Issue Date: | 2015 |
ISSN: | 1126-6708 1029-8479 |
Statement of Responsibility: | The ATLAS collaboration, G. Aad ... P. Jackson ... L. Lee ... A. Petridis ... A. Qureshi ... N. Soni ... M.J. White ... et al. |
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 tt¯ + 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 t pole , is: mpolet=173.7±1.5(stat.)±1.4(syst.)+1.0−0.5(theory)GeV. This result represents the most precise measurement of the top-quark pole mass to date. |
Keywords: | Hadron-Hadron Scattering; Top physics |
Description: | Published: October 19, 2015 |
Rights: | Copyright: © The Author(s) 2015. Open Access. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. |
DOI: | 10.1007/JHEP10(2015)121 |
Published version: | http://dx.doi.org/10.1007/jhep10(2015)121 |
Appears in Collections: | Aurora harvest 3 Physics publications |
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hdl_115361.pdf | Published version | 782.34 kB | Adobe PDF | View/Open |
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