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{\bf EPS-HEP99} \\
{\bf Abstract \# 000} \\
{\bf Parallel sessions: 3} \\
{\bf Plenary sessions:  2,3}
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\abstractheader{ {\bf  Inclusive photoproduction of neutral pions  
in the photon hemisphere at HERA } \\ \\
H1 Collaboration, \\
DESY, Notkestr.85, D-22607 Hamburg, Germany
}

\abstractbody{
 The inclusive photoproduction of $\pi^0$'s  is studied at a mean
$\gamma p$ centre-of-mass energy, $\langle W\rangle= 200$\,GeV.
 The mesons are detected in the backward calorimeter (SpaCal) of the H1
detector at HERA via their decays to photons.
 The double differential $\pi^0$ cross section, measured
 as a function of the pion's transverse
 momentum and rapidity is presented and  compared with
next-to-leading order pQCD calculations and predictions
 of different QCD Monte Carlo models.
The invariant transverse momentum spectrum exhibits a  power-law
tail for $p_T>1.6$ GeV/c, suggesting the onset of hard
parton-parton scattering processes.
}

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