Measurement of t(t)over-bar production with a veto on additional central jet activity in pp collisions at root s=7 TeV using the ATLAS detector
- NázevTitle
- Measurement of t(t)over-bar production with a veto on additional central jet activity in pp collisions at root s=7 TeV using the ATLAS detectorMeasurement of t(t)over-bar production with a veto on additional central jet activity in pp collisions at root s=7 TeV using the ATLAS detector
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- G. Aad, B. Abbott, J. Abdallah, S. Abdel Khalek, A. A. Abdelalim, K. Augsten, T. Holý, T. Horažďovský, Z. Hubáček, J. Jakůbek, Z. Kohout, V. Král, F. Krejčí, S. Pospíšil, V. Šimák, T. Slavíček, K. Smolek, J. Sodomka, M. Solar, J. Šolc, V. Sopko, B. Sopko, I. Štekl, D. Tureček, V. Vacek, M. Vlasák, P. Vokáč
- Klíčová slovaKeywords
- top quark, jet activity
- ExperimentCollaboration
- ATLAS
- DOIDOI
- 10.1140/epjc/s10052-012-2043-9
- Časopis / citaceJournal / citation
- The European Physical Journal C 72(6), 2043 (2012) · ISSN 1434-6044
- RokYear
- 2012
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Matematické, počítačové a experimentální metody ve fyziceMathematical, Computer and Experimental Methods in Physics; Matematické, počítačové a experimentální metody ve fyziceMathematical, Computer and Experimental Methods in Physics; Fundamentální experimenty ve fyzice mikrosvětaFundamental Experiments in Physics of Microworld; Centrum částicové fyzikyCenter for Particle Physics; Mezinárodní experiment ATLAS-CERNInternational Experiment ATLAS-CERN; Mezinárodní experiment ATLAS-CERNInternational Experiment ATLAS-CERN
- CitovánoCited by
- 264 (INSPIRE-HEP)
- Plný text (open access)Full text (open access)
- https://link.springer.com/content/pdf/10.1140/epjc/s10052-012-2043-9.pdf
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
A measurement of the jet activity in t (t) over bar events produced in proton-proton collisions at a centre-of-mass energy of 7 TeV is presented, using 2.05 fb(-1) of integrated luminosity collected by the ATLAS detector at the Large Hadron Collider. The t (t) over bar events are selected in the dilepton decay channel with two identified b-jets from the top quark decays. Events are vetoed if they contain an additional jet with transverse momentum above a threshold in a central rapidity interval. The fraction of events surviving the jet veto is presented as a function of this threshold for four different central rapidity interval definitions. An alternate measurement is also performed, in which events are vetoed if the scalar transverse momentum sum of the additional jets in each rapidity interval is above a threshold. In both measurements, the data are corrected for detector effects and compared to the theoretical models implemented in MC@NLO, POWHEG, ALPGEN and SHERPA. The experimental uncertainties are often smaller than the spread of theoretical predictions, allowing deviations between data and theory to be observed in some regions of phase space.
A measurement of the jet activity in t (t) over bar events produced in proton-proton collisions at a centre-of-mass energy of 7 TeV is presented, using 2.05 fb(-1) of integrated luminosity collected by the ATLAS detector at the Large Hadron Collider. The t (t) over bar events are selected in the dilepton decay channel with two identified b-jets from the top quark decays. Events are vetoed if they contain an additional jet with transverse momentum above a threshold in a central rapidity interval. The fraction of events surviving the jet veto is presented as a function of this threshold for four different central rapidity interval definitions. An alternate measurement is also performed, in which events are vetoed if the scalar transverse momentum sum of the additional jets in each rapidity interval is above a threshold. In both measurements, the data are corrected for detector effects and compared to the theoretical models implemented in MC@NLO, POWHEG, ALPGEN and SHERPA. The experimental uncertainties are often smaller than the spread of theoretical predictions, allowing deviations between data and theory to be observed in some regions of phase space.