Abstract
Inclusive jet and dijet cross-sections are measured in proton-proton collisions at a centre-of-mass energy of 13 TeV. The measurement uses a dataset with an integrated luminosity of 3.2 fb−1 recorded in 2015 with the ATLAS detector at the Large Hadron Collider. Jets are identified using the anti-kt algorithm with a radius parameter value of R = 0.4. The inclusive jet cross-sections are measured double-differentially as a function of the jet transverse momentum, covering the range from 100 GeV to 3.5 TeV, and the absolute jet rapidity up to |y| = 3. The double-differential dijet production cross-sections are presented as a function of the dijet mass, covering the range from 300 GeV to 9 TeV, and the half absolute rapidity separation between the two leading jets within |y| < 3, y∗, up to y∗ = 3. Next-to-leading-order, and next-to-next-to-leading-order for the inclusive jet measurement, perturbative QCD calculations corrected for non-perturbative and electroweak effects are compared to the measured cross-sections.
Highlights
The measured double-differential inclusive jet cross-sections are shown in figure 5 as a function of pT for the six jet rapidity bins, and the measured double-differential dijet crosssections are shown in figure 6 as a function of mjj for the six y∗ bins
The NLO perturbative QCD (pQCD) predictions using the CT14 parton distribution function (PDF) set corrected for non-perturbative and electroweak effects are shown in both figures
The ratios of the NLO pQCD predictions to the measured inclusive jet cross-sections as a function of pT in the six jet rapidity bins are shown in figure 7 for the CT14, MMHT 2014 and NNPDF 3.0 (CT14, ABMP16 and HERAPDF 2.0) PDF sets
Summary
The ATLAS experiment [19, 20] at the LHC is a multi-purpose particle detector with a forward-backward symmetric cylindrical geometry and a near 4π coverage in solid angle. It consists of an inner tracking detector, electromagnetic and hadron calorimeters, and a muon spectrometer. The ATLAS experiment [19, 20] at the LHC is a multi-purpose particle detector with a forward-backward symmetric cylindrical geometry and a near 4π coverage in solid angle.3 It consists of an inner tracking detector, electromagnetic and hadron calorimeters, and a muon spectrometer. Lead/liquid-argon (LAr) sampling calorimeters provide electromagnetic (EM) energy measurements with high granularity. They consist of a barrel (|η| < 1.475) and two endcap (1.375 ≤ |η| < 3.2) regions. The first-level trigger is implemented in hardware and uses a subset of the detector information This is followed by the high-level trigger system [21], which is software-based and can run the offline reconstruction and calibration software, further reducing the event rate to an average of 1 kHz
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
