CMS-PAS-SMP-21-009

CMS-PAS-SMP-21-009
Measurement of the double-differential inclusive jet cross section in proton-proton collisions at $\sqrt{s} =$ 5.02 TeV
CMS Collaboration
July 2021

Abstract: The inclusive jet cross section is differentially measured in bins of jet transverse momentum $p_{\mathrm{T}}$ and rapidity $y$ . The measurement is performed using proton-proton collision data at $\sqrt{s} =$ 5.02 TeV, recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 27.4 pb $^{-1}$ . The jets are reconstructed with the anti- $k_{\mathrm{T}}$ algorithm using a distance parameter of $R =$ 0.4, within the rapidity interval $\|y\| <$ 2, across the kinematic range 0.06 $< p_{\mathrm{T}} <$ 1 TeV. The jet cross section is unfolded from detector-level to particle-level using the measured jet response and resolution. The measurement is compared with perturbative QCD predictions, calculated at both next-to-leading order (NLO) and next-to-next-to-leading order (NNLO). The prediction is corrected for nonperturbative effects, and presented for a variety of parton distribution functions and choices of the renormalization and factorization scale $\mu$ . The NNLO prediction reproduces the measured cross section better than NLO does, and the NNLO prediction is also significantly less dependent on the choice of $\mu$ .
Links: CDS record (PDF) ; CADI line (restricted) ; These preliminary results are superseded in this paper, Submitted to JHEP. The superseded preliminary plots can be found here.

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