CHARGE-SYMMETRY VIOLATION IN NEUTRON-PROTON ELASTIC-SCATTERING AT EN = 183 MEV

被引：34

作者：

KNUTSON, LD

VIGDOR, SE

JACOBS, WW

SOWINSKI, J

JOLIVETTE, PL

WISSINK, SW

BLOCH, C

WHIDDON, C

BYRD, RC

机构：

[1] INDIANA UNIV,CYCLOTRON FACIL,BLOOMINGTON,IN 47408

[2] HOPE COLL,HOLLAND,MI 49423

[3] UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87545

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.66.1410

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Measurements of the spin dependence of n-p elastic scattering at E(n) = 183 MeV have been carried out with polarized neutrons and polarized protons. If charge symmetry holds, the two analyzing powers A(n) and A(p) must be equal. The measured value of DELTA-A = A(n) - A(p), averaged over the angular range 82.2-degrees less-than-or-equal-to theta-c.m. less-than-or-equal-to 116.1-degrees, is (33.1 +/- 5.9 +/- 4.3) x 10(-4). This result represents clear evidence of charge-symmetry violation in the strong interaction. The measurement agrees well with predictions from meson-exchange theory when these include the isospin mixing of the rho-0 and omega-0 mesons.

引用

页码：1410 / 1413

页数：4

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