Eur. Phys. J. A 11, 371-374 (2001)
Short Note
Exclusive measurement of coherent 
-photoproduction from the
deuteron
J. Weiß1, P. Achenbach2, J. Ahrens2, J.R.M. Annand3, R. Beck2, V. Hejny4, J.D. Kellie3, V. Kleber4, M. Kotulla1, B. Krusche5, V. Kuhr6, R. Leukel2, V. Metag1, V.M. Olmos de Léon2, F. Rambo6, A. Schmidt2, U. Siodlaczek7, H. Ströher4, F. Wissmann6 and M. Wolf1
1
II. Physikalisches Institut,
Justus-Liebig-Universität Gießen, Heinrich-Buff-Ring 16, D-35392
Gießen, Germany
2
Institut für Kernphysik,
Johannes-Gutenberg-Universität Mainz, Johannes-Joachim-Becher-Weg 45,
D-55099 Mainz, Germany
3
Department of Physics and Astronomy, University of Glasgow, Glasgow
G128QQ, UK
4
Institut für Kernphysik, Forschungszentrum Jülich GmbH,
D-52425 Jülich, Germany
5
Departement für Physik und Astronomie, Universität Basel,
Klingelbergstrasse 82, CH-4056 Basel, Switzerland
6
II. Physikalisches Institut,
Georg-August-Universität Göttingen, Bunsenstr. 7-9, D-37073
Göttingen, Germany
7
Physikalisches Institut,
Eberhard-Karls-Universität Tübingen, Auf der Morgenstelle 14, D-72076
Tübingen, Germany
(Received: 5 April 2001 / Revised version: 14 July 2001 Communicated by P. Schuck)
Abstract
Coherent photoproduction of -mesons from the deuteron
has been measured from threshold up to
750 MeV using the
photon spectrometer TAPS at the tagged photon facility at the Mainz
microtron MAMI. For the first time, differential coherent cross-sections have been deduced from the coincident detection of
the -meson
and the recoil deuteron. A missing-energy analysis was used for the
suppression of background events so that a very clean identification of
coherent -photoproduction was achieved.
The resulting cross-sections agree with previous experimental results except
for angles around 90° in the 
c.m. system where they are smaller.
They are compared to various model calculations.
13.60.Le - Meson production.
14.20.Gk - Baryon resonances with S=0 .
25.20.Lj - Photoproduction reactions.
© Società Italiana di Fisica, Springer-Verlag 2001
