2017/05/09 by Daniel Britzger, Britzger, Daniel
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #hep-ex #hep-ph
paper · pdf · doi:10.48550/arxiv.1705.03450
5 pages, 4 figures. Contribution to the proceedings of the XXV International Workshop on Deep-Inelastic Scattering and Related Topics (DIS2017), University of Birmingham, UK, 3-7 April 2017
arxiv created 2017/05/09 · arxiv updated 2017/05/10
A first determination of the strong coupling αs(mZ) in next-to-next-to-leading order (NNLO) from inclusive jet and dijet production cross sections in deep-inelastic scattering at HERA is presented. Data collected by the H1 experiment in the years 1995 to 2007 covering the range of momentum transfer 5.5<Q2<15 000 \rm GeV2 and jet transverse momenta PT>4.5 \rm GeV are explored. The strong coupling is determined in a fit to inclusive jet and dijet data to αs(mZ)=0.1157 (6)\rm exp (+31-26)\rm theo. Further studies on the phenomenological application of the new NNLO calculations and on fits to the individual data sets are presented. The running of the strong coupling is probed in a single experiment over one order of magnitude in the remormalisation scale and consistency with the QCD expectations is found.