Dependence of inclusive jet production on the anti-k_T distance parameter in pp collisions at √s = 13 TeV


The dependence of inclusive jet production in proton-proton collisions with a center-of-mass energy of 13 TeV on the distance parameter R of the anti-(k_{T}) algorithm is studied using data corresponding to integrated luminosities up to 35.9 fb⁻¹ collected by the CMS experiment in 2016. The ratios of the inclusive cross sections as functions of transverse momentum (p_{T}) and rapidity y, for R in the range 0.1 to 1.2 to those using R = 0.4 are presented in the region 84 < (p_{T}) < 1588 GeV and | y | < 2.0. The results are compared to calculations at leading and next-to-leading order in the strong coupling constant using different parton shower models. The variation of the ratio of cross sections with R is well described by calculations including a parton shower model, but not by a leading-order quantum chromodynamics calculation including nonperturbative effects. The agreement between the data and the theoretical predictions for the ratios of cross sections is significantly improved when next-to-leading order calculations with nonperturbative effects are used.

High Energy Physics - Experiment, Hadron-Hadron scattering (experiments), Jets, QCD
Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Brandstetter, J., Dragicevic, M., Erö, J., Escalante Del Valle, A., Flechl, M., Frühwirth, R., Jeitler, M., Krammer, N., Krätschmer, I., Liko, D., Madlener, T., Mikulec, I., Rad, N., … Woods, N. (2020). Dependence of inclusive jet production on the anti-kT distance parameter in pp collisions at $ \sqrt{\mathrm{s}} $ = 13 TeV. In Journal of High Energy Physics (Vol. 2020, Issue 12). Springer Science and Business Media LLC.