ETD system

Electronic theses and dissertations repository

 

Tesi etd-12042011-121747


Thesis type
Tesi di dottorato di ricerca
Author
FRANCAVILLA, PAOLO
URN
etd-12042011-121747
Title
Measurement of the inclusive jet cross section with the ATLAS detector at the LHC
Settore scientifico disciplinare
FIS/04
Corso di studi
FISICA
Commissione
commissario Barberio, Elisabetta
commissario Loch, Peter
commissario Prof. Dell'Orso, Mauro
commissario Salam, Gavin
tutor Prof.ssa Roda, Chiara
commissario Dott. Bedeschi, Franco
Parole chiave
  • qcd
  • parton density functions
  • ATLAS
  • jet
  • LHC
Data inizio appello
12/12/2011;
Consultabilità
completa
Riassunto analitico
The measurement of the inclusive jet cross section is one of the test of perturbative quantum chromo-dynamics par excellence. The inclusive jet cross section presented in this thesis is measured with the ATLAS detector at the Large Hadron Collider (LHC). The double-differential inclusive jet cross section has been measured in bin of transverse momentum pT and rapidity |y|. It measures the cross sections for anti-kt jet with resolution parameter R = 0.4 and R = 0.6 for 20 GeV &lt; pT &lt; 1500 GeV, and for −4.4 &lt; y &lt; 4.4, which is the wider range reached so far at hadron collider. The total recorded integrated luminosity L in 2010, used in this analysis, is almost 37 pb−1. Four distinctive features make this measurement one of the more extensive and detailed tests of the jet physics at hadron colliders:<br>(a) the measurement can profit of the unprecedented collision intensity and center-of-mass energy of sqrt(s) = 7 TeV provided by the Large Hadron Collider, overcoming the highest measured jet energies in previous experiments;<br>(b) the wide solid angle coverage of the ATLAS experiment allow the measurement of the cross section in uncharted angular regions;<br>(c) the quality of the ATLAS measurement of jets at low energies allow the extension of the cross section measurement to really low energy;<br>(d) the jet cross section profits of the new anti-kt jet definition developed in the last couple<br>of years, which overcames most of the problems of the previous definitions.
File