DYNAMICAL ZEROS IN NEUTRINO-ELECTRON ELASTIC-SCATTERING AT LEADING ORDER

被引：18

作者：

SEGURA, J ^{[1
]}

BERNABEU, J ^{[1
]}

BOTELLA, FJ ^{[1
]}

PENARROCHA, J ^{[1
]}

机构：

[1] UNIV VALENCIA, CSIC, CTR MIXTE, IFIC, E-46100 BURJASSOT, SPAIN

来源：

PHYSICAL REVIEW D | 1994年 / 49卷 / 03期

关键词：

D O I：

10.1103/PhysRevD.49.1633

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show the existence of dynamical zeros in the helicity amplitudes for neutrino-electron elastic scattering at lowest order in the standard theory. In particular, the lambda=1/2 nonflip electron helicity amplitude in the electron-antineutrino process vanishes for an incident neutrino energy E(v)=m(e)/(4 sin(2) theta(W)) and forward electrons (maximum recoil energy). The rest of the helicity amplitudes show kinematical zeros in this configuration and therefore the cross section vanishes. Prospects to search for the neutrino magnetic moment are discussed.

引用

页码：1633 / 1636

页数：4

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