Observation of top quark production in proton-nucleus collisions

Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Asilar, Ece and Bergauer, Thomas and Brandstetter, Johannes and Md. Ali, Mohd. Adli (2017) Observation of top quark production in proton-nucleus collisions. Physical Review Letters, 119 (24). pp. 242001-1. ISSN 0031-9007 E-ISSN 1079-7114

	PDF (CMS Collaboration) - Published Version Restricted to Repository staff only Download (551kB) | Request a copy
	PDF (scopus) - Supplemental Material Restricted to Repository staff only Download (540kB) | Request a copy

Abstract

The first observation of top quark production in proton-nucleus collisions is reported using proton-lead data collected by the CMS experiment at the CERN LHC at a nucleon-nucleon center-of-mass energy of sNN=8.16 TeV. The measurement is performed using events with exactly one isolated electron or muon candidate and at least four jets. The data sample corresponds to an integrated luminosity of 174 nb-1. The significance of the tt signal against the background-only hypothesis is above 5 standard deviations. The measured cross section is σtt=45±8 nb, consistent with predictions from perturbative quantum chromodynamics.

Item Type:	Article (Journal)
Additional Information:	7861/63045
Uncontrolled Keywords:	Observation of top quark production; Proton-nucleus collisions
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science
Depositing User:	Engku Norulizati Engku Aziz
Date Deposited:	07 May 2018 11:01
Last Modified:	21 Jun 2018 11:02
URI:	http://irep.iium.edu.my/id/eprint/63045

Actions (login required)

View Item