Title of article
A method for an improved measurement of the electron–antineutrino correlation in free neutron beta decay
Author/Authors
Wietfeldt، نويسنده , , F.E. and Fisher، نويسنده , , B.M. and Trull، نويسنده , , C. and Jones، نويسنده , , G.L. and Collet، نويسنده , , B. R. Goldin، نويسنده , , L. and Yerozolimsky، نويسنده , , B.G. and Wilson، نويسنده , , R. and Balashov، نويسنده , , S. and Mostovoy، نويسنده , , Yu. and Komives، نويسنده , , Marieke A. and Leuschner، نويسنده , , M. and Byrne، نويسنده , , J. and Bateman، نويسنده , , F.B. and Dewey، نويسنده , , M.S. and Nic، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
13
From page
181
To page
193
Abstract
The angular correlation between the beta electron and antineutrino in nuclear beta decay is characterized by the dimensionless parameter a . The value of a for free neutron decay, when combined with other neutron decay parameters, can be used to determine the weak vector and axial vector coupling constants g V and g A and test the validity and self-consistency of the Electroweak Standard Model. Previous experiments that measured a in neutron decay relied on precise proton spectroscopy and were limited by systematic effects at about the 5% level. We present a new approach to measuring a for which systematic uncertainties promise to be much smaller.
Keywords
beta decay , Neutron decay , CKM unitarity
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Serial Year
2005
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Record number
2203605
Link To Document