PHOTOPRODUCTION OF POSITIVE PIONS FROM HYDROGEN WITH PHOENICS AT ELSA

被引：58
|
作者：
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
机构：
[1] Physikalisches Institut, University of Bonn, D-53115 Bonn
来源：
NUCLEAR PHYSICS A | 1994年 / 570卷 / 3-4期
关键词：
1H(GAMMA; PI+); E=220-900 MEV BREMSSTRAHLUNG; MEASURED SIGMA(THETA); MODEL COMPARISON;
D O I：
10.1016/0375-9474(94)90074-4
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The differential cross section of the reaction gammap --> pi+ n has been measured with the PHOENICS detector at ELSA in Bonn. For the first time this cross section has been determined simultaneously over a large range of photon energies (E(gamma) = 220-900 MeV) and pion angles (THETA(pi)c.m. = 35-degrees-135-degrees) with a tagged photon facility. The experimental set-up allowed a considerable kinematic overdetermination of the investigated reaction. Accordingly, the background contributions have been suppressed to below 1%. The measured differential cross section is in good agreement with existing data. The comparison with different model calculations is presented.
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页码：580 / 598
页数：19
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