Observation of top quark production in proton-nucleus collisions
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 mu...
Saved in:
Main Authors: | , , , , , , |
---|---|
Format: | Article |
Language: | English English |
Published: |
American Physical Society
2017
|
Subjects: | |
Online Access: | http://irep.iium.edu.my/63045/1/63045_Observation%20of%20Top%20Quark%20Production%20_article.pdf http://irep.iium.edu.my/63045/2/63045_Observation%20of%20Top%20Quark%20Production%20_scopus.pdf http://irep.iium.edu.my/63045/ https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.119.242001 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | 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. |
---|