SIMULTANEOUS MEASUREMENT OF THE (GAMMA,P) (GAMMA-N) CROSS-SECTION RATIO IN HE-4 AS A TEST OF CHARGE-SYMMETRY

被引：16

作者：

FLORIZONE, REJ

ASAI, J

FELDMAN, G

HALLIN, EL

SKOPIK, DM

VOGT, JM

HAIGHT, RC

STERBENZ, SM

机构：

[1] UNIV SASKATCHEWAN,SASKATCHEWAN ACCLERATOR LAB,SASKATOON S7N 0W0,SASKATCHEWAN,CANADA

[2] LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87544

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.72.3476

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured (gamma,p) and (gamma,n) differential yields at 90-degrees for the two-body photodisintegration of He-4 using tagged photons of energy E(gamma) = 25-60 MeV. Data for both channels were obtained simultaneously using windowless DELTAE-E telescopes to detect the He-3 and H-3 recoils. The ratio of our angle-integrated yields, which is insensitive to systematic uncertainties due to the simultaneity of the measurements, agrees with calculations employing only charge-symmetric nuclear interactions. Thus, within the present errors, our data show no evidence of a significant charge-symmetry violation in He-4 in this energy range.

引用

页码：3476 / 3479

页数：4

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