SOLAR-NEUTRINO SOLUTIONS WITH MATTER-ENHANCED FLAVOR-CHANGING NEUTRAL-CURRENT SCATTERING

被引:104
作者
BARGER, V
PHILLIPS, RJN
WHISNANT, K
机构
[1] RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND
[2] IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011
[3] IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011
来源
PHYSICAL REVIEW D | 1991年 / 44卷 / 06期
关键词
D O I
10.1103/PhysRevD.44.1629
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We explore quantitatively recent suggestions that the solar-neutrino puzzle may be explained by matter enhancement of nonstandard neutral-current scattering of neutrinos on d quarks. These neutral currents introduce two new parameters, relating to flavor-diagonal and off-diagonal v-d scattering, which affect the dynamical mixing of two neutrino flavors in the Sun. We consider this mixing in three alternative scenarios: (a) massless neutrinos, (b) massive neutrinos with off-diagonal but no new diagonal currents, and (c) massive neutrinos with both off-diagonal and new diagonal currents. We determine the regions in parameter space that give consistency between the standard solar model and existing solar-neutrino data from the Homestake and Kamiokande-II experiments, and give the corresponding predictions for future experiments with gallium and superfluid helium detectors. We also discuss the more general situation, with nonstandard neutral-current scattering from u quarks and electrons as well as from d quarks, and consider the effects of transmission through the Earth. Finally, we examine the bounds on nonstandard neutral-current neutrino scattering imposed by other experiments; some particular classes of solution are thereby excluded, but a variety of possibilities remains.
引用
收藏
页码:1629 / 1643
页数:15
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