Jet production in ep collisions at low Q 2 and determination of α s

H1 Collaboration; Egli, S; Hildebrandt, M; Horisberger, R; Grab, C; Zimmermann, T; Müller, K; Robmann, P; Straumann, U; Truöl, P; Perez, E; et al (2010). Jet production in ep collisions at low Q 2 and determination of α s. European Physical Journal C - Particles and Fields, 67(1-2):1-24.

Abstract

The production of jets is studied in deep-inelastic e + p scattering at low negative four momentum transfer squared 5<Q 2<100 GeV2 and at inelasticity 0.2<y<0.7 using data recorded by the H1 detector at HERA in the years 1999 and 2000, corresponding to an integrated luminosity of 43.5 pb−1. Inclusive jet, 2-jet and 3-jet cross sections as well as the ratio of 3-jet to 2-jet cross sections are measured as a function of Q 2 and jet transverse momentum. The 2-jet cross section is also measured as a function of the proton momentum fraction ξ. The measurements are well described by perturbative quantum chromodynamics at next-to-leading order corrected for hadronisation effects and are subsequently used to extract the strong coupling α s .

The production of jets is studied in deep-inelastic e + p scattering at low negative four momentum transfer squared 5<Q 2<100 GeV2 and at inelasticity 0.2<y<0.7 using data recorded by the H1 detector at HERA in the years 1999 and 2000, corresponding to an integrated luminosity of 43.5 pb−1. Inclusive jet, 2-jet and 3-jet cross sections as well as the ratio of 3-jet to 2-jet cross sections are measured as a function of Q 2 and jet transverse momentum. The 2-jet cross section is also measured as a function of the proton momentum fraction ξ. The measurements are well described by perturbative quantum chromodynamics at next-to-leading order corrected for hadronisation effects and are subsequently used to extract the strong coupling α s .

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Item Type: Journal Article, refereed, original work 07 Faculty of Science > Physics Institute 530 Physics English May 2010 20 Jan 2011 14:34 05 Apr 2016 14:36 Springer 1434-6044 Publisher DOI. An embargo period may apply. ﻿10.1140/epjc/s10052-010-1282-x
Permanent URL: http://doi.org/10.5167/uzh-42682