Measurement of the Beam Asymmetry Sigma in the Forward Direction for pi0 Photoproduction

N. Sparks , V. Crede , A. V. Anisovich , J. C. S. Bacelar , R. Bantes , O. Bartholomy , D. Bayadilov , R. Beck

show 52 more authors

Y. A. Beloglazov R. Castelijns D. Elsner R. Ewald F. Frommberger C. Funke R. Gregor A. Gridnev E. Gutz W. Hillert P. Hoffmeister I. Jaegle J. Junkersfeld H. Kalinowsky S. Kammer Frank Klein Friedrich Klein E. Klempt M. Kotulla B. Krusche H. Loehner I. V. Lopatin S. Lugert D. Menze T. Mertens J. G. Messchendorp V. Metag M. Nanova V. A. Nikonov D. Novinski R. Novotny M. Ostrick L. M. Pant H. Pee M. Pfeiffer A. Roy A. V. Sarantsev S. Schadmand C. Schmidt H. Schmieden B. Schoch S. Shende V. Sokhoyan A. Suele V.V. Sumachev T. Szczepanek U. Thoma D. Trnka R. Varma D. Walther C. Wendel A. Wilson

Authors on Pith no claims yet

classification ⚛️ nucl-ex hep-ex

keywords asymmetrybeamcircsigmabeendataenergiesforward

0 comments

read the original abstract

Photoproduction of neutral pions has been studied with the CBELSA/TAPS detector for photon energies between 0.92 and 1.68~GeV at the electron accelerator ELSA. The beam asymmetry~$\Sigma$ has been extracted for $115^\circ < \theta_{\rm c.m.} < 155^\circ$ of the $\pi^0$~meson and for $\theta_{\rm c.m.} < 60^\circ$. The new beam asymmetry data improve the world database for photon energies above 1.5~GeV and, by covering the very forward region, extend previously published data for the same reaction by our collaboration. The angular dependence of $\Sigma$ shows overall good agreement with the SAID parameterization.

This paper has not been read by Pith yet.

Measurement of the Beam Asymmetry Sigma in the Forward Direction for pi0 Photoproduction

discussion (0)