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SUMMARY:Ratio measurements at ATLAS: More sensitivity to constrain Parton 
 Distributions - Kristin Lohwasser (DESY\, Zeuthen)
DTSTART:20170124T150000Z
DTEND:20170124T160000Z
UID:TALK67484@talks.cam.ac.uk
CONTACT:Alexander Mitov
DESCRIPTION:A wealth of proton-proton collision data has been collected at
  the LHC at five different centre-of-mass energies\, providing complementa
 ry and additional information on the proton dynamics. Different final stat
 es such a W/Z\, ttbar and jet production allows to obtain complementary in
 formation on the various parton flavours. Ratios between cross sections of
  different final states measured at different centre-of-mass energies allo
 ws to cancel dominant experimental systematics and luminosity uncertaintie
 s and improve constraints. Recent results of ratio measurements and other 
 PDF determinations from the ATLAS collaboration are presented.
LOCATION:Rutherford Seminar Room B
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