Publication:

Direct top-quark decay width measurement in the t t ̄ lepton+jets channel at √s = 8 TeV with the ATLAS experiment

Thumbnail Image

Open/View Files

1709.04207.pdf (914.53 KB)

Date

2018-02

Authors

Published Version

10.1140/epjc/s10052-018-5595-5

Journal Title

Journal ISSN

Volume Title

Publisher

Springer Science and Business Media LLC
The Harvard community has made this article openly available. Please share how this access benefits you.

Research Projects

Organizational Units

Journal Issue

Citation

ATLAS Collaboration. Direct top-quark decay width measurement in the t t ̄ lepton+jets channel at √s = 8 TeV with the ATLAS experiment. Eur. Phys. J. C , 2018.

Abstract

This paper presents a direct measurement of the decay width of the top quark using tt ̄ events in the lepton+jets final state. The data sample was collected by the ATLAS detector at the LHC in proton–proton collisions at a centre-of-mass energy of 8 TeV and corresponds to an integrated luminosity of 20.2 fb−1. The decay width of the top quark is measured using a template fit to distributions of kinematic observables associated with the hadronically and semileptonically decaying top quarks. The result, Γt = 1.76 ± 0.33 (stat.) +0.79 (syst.) GeV −0.68 for a top-quark mass of 172.5 GeV, is consistent with the prediction of the Standard Model.

Description

Other Available Sources

Research Data

Keywords

Physics and Astronomy (miscellaneous), Engineering (miscellaneous)

Terms of Use

URI

https://nrs.harvard.edu/URN-3:HUL.INSTREPOS:37376448

Collections

FAS Scholarly Articles

Endorsement

Review

Supplemented By

Related Stories