PHOTOPRODUCTION OF POSITIVE PIONS FROM HYDROGEN WITH PHOENICS AT ELSA

Authors
BUCHLER K ALTHOFF KH ANTON G ARENDS J BEULERTZ W BREUER M DETEMPLE P DUTZ H KOHLGARTH E KRAMER D MEYER W NOLDEKE G SCHNEIDER W THIEL W ZUCHT B
Citation
K. Buchler et al., PHOTOPRODUCTION OF POSITIVE PIONS FROM HYDROGEN WITH PHOENICS AT ELSA, Nuclear physics. A, 570(3-4), 1994, pp. 580-598
Citations number
12
Categorie Soggetti
Physics, Nuclear
Journal title
Nuclear physics. A → ACNP
ISSN journal
03759474
Volume
570
Issue
3-4
Year of publication
1994
Pages
580 - 598
Database
ISI
SICI code
0375-9474(1994)570:3-4<580:POPPFH>2.0.ZU;2-3
Abstract
The differential cross section of the reaction gammap --> pi+ n has be en measured with the PHOENICS detector at ELSA in Bonn. For the first time this cross section has been determined simultaneously over a larg e range of photon energies (E(gamma) = 220-900 MeV) and pion angles (T HETA(pi)c.m. = 35-degrees-135-degrees) with a tagged photon facility. The experimental set-up allowed a considerable kinematic overdetermina tion of the investigated reaction. Accordingly, the background contrib utions have been suppressed to below 1%. The measured differential cro ss section is in good agreement with existing data. The comparison wit h different model calculations is presented.