A measurement of the dijet production cross section is reported based on proton-proton collision data collected in 2016 at root s = 13 TeV by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of up to 36.3 fb(-1). Jets are reconstructed with the anti-k(T) algorithm for distance parameters of R = 0.4 and 0.8. Cross sections are measured double-differentially (2D) as a function of the largest absolute rapidity vertical bar y vertical bar(max) of the two jets with the highest transverse momenta p(T) and their invariant mass m(1,2), and triple-differentially (3D) as a function of the rapidity separation y*, the total boost y(b), and either m(1,2) or the average p(T) of the two jets. The cross sections are unfolded to correct for detector effects and are compared with fixed-order calculations derived at next-to-next-to-leading order in perturbative quantum chromodynamics. The impact of the measurements on the parton distribution functions and the strong coupling constant at the mass of the Z boson is investigated, yielding a value of alpha(S)(m(Z)) = 0.1179 +/- 0.0019.

Measurement of multidifferential cross sections for dijet production in proton-proton collisions at √s=13TeV

Primavera, F.;Carlin, R.;Margoni, M.;Migliorini, M.;Pazzini, J.;Ronchese, P.;Rossin, R.;Simonetto, F.;Strong, G.;Tosi, M.;Triossi, A.;Yarar, H.;Zanetti, M.;Zotto, P.;
2025

Abstract

A measurement of the dijet production cross section is reported based on proton-proton collision data collected in 2016 at root s = 13 TeV by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of up to 36.3 fb(-1). Jets are reconstructed with the anti-k(T) algorithm for distance parameters of R = 0.4 and 0.8. Cross sections are measured double-differentially (2D) as a function of the largest absolute rapidity vertical bar y vertical bar(max) of the two jets with the highest transverse momenta p(T) and their invariant mass m(1,2), and triple-differentially (3D) as a function of the rapidity separation y*, the total boost y(b), and either m(1,2) or the average p(T) of the two jets. The cross sections are unfolded to correct for detector effects and are compared with fixed-order calculations derived at next-to-next-to-leading order in perturbative quantum chromodynamics. The impact of the measurements on the parton distribution functions and the strong coupling constant at the mass of the Z boson is investigated, yielding a value of alpha(S)(m(Z)) = 0.1179 +/- 0.0019.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/3575069
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