%
% Simple template for an abstract of a contributed paper, 
% PANIC99, Uppsala, Sweden, June 10-16, 1999
%
\documentstyle[epsfig,graphicx,12pt]{article}
%
\setlength{\textwidth}{160mm}\setlength{\textheight}{240mm}
\setlength{\oddsidemargin}{0mm}\setlength{\evensidemargin}{0mm}
\setlength{\topmargin}{0mm}
\setlength{\parindent}{0mm} 
\pagestyle{empty}       %no page number!
%
\begin{document}
%
{\large\bf Measurement of Internal Jet Structure in 
Dijet Production in Deep-Inelastic Scattering at HERA
}\\     [4mm]
%
{H1 Collaboration}\\                            
%
{\small \em DESY, Hamburg, Germany}\\[6mm]
%
Internal jet structure in dijet production in deep-inelastic scattering
is measured with the H1 detector at HERA.
Jets with transverse energies $E_{T, {\rm Breit}} > 5$ \, GeV are
selected in the Breit frame employing $k_\perp$ and cone jet algorithms.
In the kinematic region of squared momentum transfers 
$10 < Q^2 \le 120$\, GeV$^2$ ~and $x$-Bjorken values  
$2 \cdot 10^{-4} \le x_{\rm Bj} \le 8 \cdot 10^{-3}$,
jet shapes and subjet multiplicities are measured as a function of 
a resolution parameter.
Distributions of both observables are corrected for detector effects 
and presented as functions of the transverse jet energy and jet 
pseudo-rapidity.
Dependences of the jet shape and the average number of subjets
on the transverse energy and the pseudo-rapidity of the jet are observed.
With increasing transverse jet energies and decreasing pseudo-rapidities,
i.e.\ towards the photon hemisphere, the jets are more collimated.
QCD models give a fair description of the data.

\vspace*{0.5cm}
{\bf References }\\
1. H1 Collaboration, C.~Adloff {\it et al}, 
DESY-98-210 / submitted to Nuc. Phys. B. \\

\end{document}

