NEW LIMIT OF THE G-PARITY IRREGULAR WEAK NUCLEON CURRENT DISCLOSED INBETA-RAY ANGULAR-DISTRIBUTIONS FROM SPIN ALIGNED B-12 AND N-12

Authors
MINAMISONO T MATSUTA K YAMAGUCHI T MINAMISONO K IKEDA T MURAMOTO Y FUKUDA M NOJIRI Y KITAGAWA A KOSHIGIRI K MORITA M
Citation
T. Minamisono et al., NEW LIMIT OF THE G-PARITY IRREGULAR WEAK NUCLEON CURRENT DISCLOSED INBETA-RAY ANGULAR-DISTRIBUTIONS FROM SPIN ALIGNED B-12 AND N-12, Physical review letters, 80(19), 1998, pp. 4132-4135
Citations number
33
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
80
Issue
19
Year of publication
1998
Pages
4132 - 4135
Database
ISI
SICI code
0031-9007(1998)80:19<4132:NLOTGI>2.0.ZU;2-Q
Abstract
The angular distributions of beta rays from spin aligned B-12 and N-12 were precisely remeasured using a further refined spin-manipulation t echnique. Our old data have also been recorrected for precisely determ ined systematic corrections. A nonzero G-parity violating induced tens or form factor f(T) has been concluded as 2Mf(T)/f(A) = +0.22 +/- 0.05 (stat) +/- 0.15(syst) +/- 0.05(theor.). In this result the asymmetry i n the axial charges due to the binding-energy difference of the transf orming nucleons is taken into account.