Observation of Top Quark Production in Proton-Nucleus Collisions

Authors

A. M. Sirunyan
The CMS Collaboration
M. M. Baarmand, Florida Institute of Technology
Vallary Bhopatkar, Florida Institute of Technology
S. Colafranceschi, Florida Institute of Technology
M. Hohlmann, Florida Institute of Technology
D. Noonan, Florida Institute of Technology
T. Roy, Florida Institute of Technology
F. Yumiceva, Florida Institute of Technology

Document Type

Article

Publication Title

Physical Review Letters

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 psNN 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 t¯t signal against the background-only hypothesis is above 5 standard deviations. The measured cross section is σ ¯ 45 8 nb, consistent with predictions from perturbative quantum chromodynamics.

DOI

10.1103/PhysRevLett.119.242001

Publication Date

12-14-2017

Recommended Citation

CMS Collaboration. (2017). Observation of top quark production in proton-nucleus collisions. Phys. Rev. Lett. 119, 242001 (2017). https://doi.org/10.1103/PhysRevLett.119.242001