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 √s(NN) = 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 tbar signal against the background-only hypothesis is above 5 standard deviations. The measured cross section is σ(t tbar) = 45 ± 8 nb, consistent with predictions from perturbative quantum chromodynamics.

Observation of Top Quark Production in Proton-Nucleus Collisions

Ravera, F.;Meridiani, P.;Amapane, N.;Argiro, S.;Bellan, R.;Costa, M.;Covarelli, R.;Kiani, B.;Migliore, E.;Monaco, V.;Monteil, E.;Obertino, M. M.;Pacher, L.;Romero, A.;Sacchi, R.;Sola, V.;Solano, A.;Rumerio, P.;
2017-01-01

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 √s(NN) = 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 tbar signal against the background-only hypothesis is above 5 standard deviations. The measured cross section is σ(t tbar) = 45 ± 8 nb, consistent with predictions from perturbative quantum chromodynamics.
2017
119
24
1
17
http://harvest.aps.org/v2/bagit/articles/10.1103/PhysRevLett.119.242001/apsxml
Physics and Astronomy (all)
Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Escalante Del...espandi
File in questo prodotto:
File Dimensione Formato  
PhysRevLett.119.242001.pdf

Accesso aperto

Tipo di file: PDF EDITORIALE
Dimensione 538.78 kB
Formato Adobe PDF
538.78 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1663879
Citazioni
  • ???jsp.display-item.citation.pmc??? 0
  • Scopus 53
  • ???jsp.display-item.citation.isi??? 29
social impact