Measurement of the H-1(gamma,pi(0)) cross section near threshold

被引：76

作者：

Bergstrom, JC ^{[1
]}

Vogt, JM ^{[1
]}

Igarashi, R ^{[1
]}

Keeter, KJ ^{[1
]}

Hallin, EL ^{[1
]}

Retzlaff, GA ^{[1
]}

Skopik, DM ^{[1
]}

Booth, EC ^{[1
]}

机构：

[1] BOSTON UNIV, DEPT PHYS, BOSTON, MA 02215 USA

来源：

PHYSICAL REVIEW C | 1996年 / 53卷 / 03期

关键词：

P(GAMMA; PI-0);

D O I：

10.1103/PhysRevC.53.R1052

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 cross section for the reaction H-1(gamma,pi(0)) has been measured using tagged photons in the threshold region (144.7-169.3 MeV). The total cross section, augmented by angular distribution information, is used to deduce the S-wave multipole E(0+). Extrapolation to threshold yields E(0+)=(-1.32+/-0.05+0.06) X 10(-3)/m(pi), in disagreement with earlier estimates. Suppression of E(0+) near the pi(+) threshold is confirmed, in approximate agreement with recent calculations.

引用

页码：R1052 / R1056

页数：5

共 13 条

[1] MEASUREMENT OF THE P(GAMMA,PI-0) CROSS-SECTION AT THRESHOLD [J].