NLO QCD predictions for internal jet shapes in DIS at HERA

Abstract

The transverse momentum flow inside jets is a sensitive measure of internal jet structure. For the current jets in deep inelastic scattering this jet shape measure is determined at order alpha_s^2, i.e. with up to three partons inside a single jet. The scale dependence of jet shapes in various jet algorithms is discussed. Results agree well with recent measurements by the ZEUS Collaboration, without introducing the hadronization parameter R_sep.

Comments: 10 pages, LaTeX2.09, REVTeX3.1, 9 postscript figures