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SUMMARY:Measurements of jet production properties in pp collisions with th
 e ATLAS detector
DTSTART;VALUE=DATE-TIME:20140705T072500Z
DTEND;VALUE=DATE-TIME:20140705T074500Z
DTSTAMP;VALUE=DATE-TIME:20260418T233903Z
UID:indico-contribution-1513@indico.ific.uv.es
DESCRIPTION:Speakers: Bogdan Malaescu (LPNHE Paris)\nSeveral aspects of th
 e jet production in pp collisions have been measured by the ATLAS collabor
 ation.  The measurements of the production cross sections of inclusive\, d
 i- and tri-jet events probe the dynamics of QCD and can constrain the part
 on proton structure.  The cross sections are measured using jets clustered
  with the anti-kT algorithm with different distance parameters and compare
 d to expectations based on next-to-leading order QCD calculations\, correc
 ted for non-perturbative effects\, as well as to next-to-leading order Mon
 te Carlo simulations. Ratios of inclusive cross sections measured at diffe
 rent centre-of-mass energies allow for reduced experimental and/or theoret
 ical uncertainties. Double-differential dijet and trijet cross sections ha
 ve been measured in proton-proton collisions at 7 TeV as a function of di-
  and tri-jet masses and the jet rapidity separation. An NLO QCD analysis o
 f the data indicates constraining power for parton distribution functions 
 of the proton. Measurements of multi-jet systems with or without a veto on
  additional jets\, probe QCD radiation effects.  The measurement of the di
 jet azimuthal decorrelations is sensitive to the strong coupling constant.
  Measurement of splitting scales in the kt clustering algorithm using jets
  from W+jet events provide a way to investigate jet clustering at differen
 t resolution scales. These measurements constitute precision tests of QCD 
 in a new energy regime.\n\nhttps://indico.ific.uv.es/event/2025/contributi
 ons/1513/
LOCATION: Sala 1
URL:https://indico.ific.uv.es/event/2025/contributions/1513/
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