1. QCD at highest Energies
Improved precision of gluon pdf
from triple-differential dijet data
CMS, EPJC 77 (2017) 746.
Extension of
analysis to
Z+jet data
ongoing,
→T. Berger,
M. Santos Correa
Precision determination of αs(MZ) and
extended test of its running from
200 GeV up to 2 TeV with CMS jet data
All points final except latest ones in black.
Largest impact from x = 10-2 up to 0.7.
ETP:
Absolute calibration
with Z+jet
Results only
achievable with
best possible
jet calibration
JERC work in progress
CMS Preliminary, CMS-PAS , 2017