Measurement of inclusive jet production and nuclear modifications in pPb collisions at $\sqrt{^{s}NN}$ = 5.02TeV

CMS Collaboration; Canelli, F; Chiochia, V; Kilminster, B; Robmann, P; et al (2016). Measurement of inclusive jet production and nuclear modifications in pPb collisions at $\sqrt{^{s}NN}$ = 5.02TeV. European Physical Journal C - Particles and Fields, 76(7):372.

Abstract

Inclusive jet production in pPb collisions at a nucleon–nucleon (NN) center-of-mass energy of $\sqrt{^{s}NN}$=5.02TeV is studied with the CMS detector at the LHC. A data sample corresponding to an integrated luminosity of 30.1 nb$^{−1}$ is analyzed. The jet transverse momentum spectra are studied in seven pseudorapidity intervals covering the range −2.0<$η_{CM}$<1.5 in the NN center-of-mass frame. The jet production yields at forward and backward pseudorapidity are compared and no significant asymmetry about $η_{CM}$=0 is observed in the measured kinematic range. The measurements in the pPb system are compared to reference jet spectra obtained by extrapolation from previous measurements in pp collisions at $\sqrt{s}$=7TeV . In all pseudorapidity ranges, nuclear modifications in inclusive jet production are found to be small, as predicted by next-to-leading order perturbative QCD calculations that incorporate nuclear effects in the parton distribution functions.

Abstract

Inclusive jet production in pPb collisions at a nucleon–nucleon (NN) center-of-mass energy of $\sqrt{^{s}NN}$=5.02TeV is studied with the CMS detector at the LHC. A data sample corresponding to an integrated luminosity of 30.1 nb$^{−1}$ is analyzed. The jet transverse momentum spectra are studied in seven pseudorapidity intervals covering the range −2.0<$η_{CM}$<1.5 in the NN center-of-mass frame. The jet production yields at forward and backward pseudorapidity are compared and no significant asymmetry about $η_{CM}$=0 is observed in the measured kinematic range. The measurements in the pPb system are compared to reference jet spectra obtained by extrapolation from previous measurements in pp collisions at $\sqrt{s}$=7TeV . In all pseudorapidity ranges, nuclear modifications in inclusive jet production are found to be small, as predicted by next-to-leading order perturbative QCD calculations that incorporate nuclear effects in the parton distribution functions.

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Item Type: Journal Article, refereed, original work 07 Faculty of Science > Physics Institute 530 Physics English 2016 10 Jan 2017 10:38 02 Feb 2018 11:17 Springer 1434-6044 Gold Publisher DOI. An embargo period may apply. https://doi.org/10.1140/epjc/s10052-016-4205-7