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.

引用

页码：580 / 598

页数：19

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