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{\bf Abstract Registration Number 556} \\
{\bf Parallel sessions: 5} \\
{\bf Plenary sessions: 7}
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\abstractheader{\bf Measurement of the Baryon-Antibaryon Asymmetry \\
              in Photoproduction at HERA\\
H1 Collaboration, DESY}

\abstractbody{
 Results are given for the inclusive photoproduction of protons and
 antiprotons measured with the H1 detector in $ep$ collisions at HERA.
 The particle identification is based on $dE/dx$ measurement.
 A non-vanishing baryon asymmetry has been observed 
 in the photon hemisphere. The baryon asymmetry is studied 
 as a function of a charged particle multiplicity.
}

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