PI-NN COUPLING FROM HIGH-PRECISION NP CHARGE-EXCHANGE AT 162 MEV

Authors
ERICSON TEO LOISEAU B NILSSON J OLSSON N BLOMGREN J CONDE H ELMGREN K JONSSON O NILSSON L RENBERG PU RINGBOM A RONNQVIST T TIBELL G ZORRO R
Citation
Teo. Ericson et al., PI-NN COUPLING FROM HIGH-PRECISION NP CHARGE-EXCHANGE AT 162 MEV, Physical review letters, 75(6), 1995, pp. 1046-1049
Citations number
24
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
75
Issue
6
Year of publication
1995
Pages
1046 - 1049
Database
ISI
SICI code
0031-9007(1995)75:6<1046:PCFHNC>2.0.ZU;2-S
Abstract
Differential np cross sections for unpolarized neutrons of 162 MeV hav e been measured to high precision with particular attention to the abs olute normalization. These data can be extrapolated precisely and mode l independently to the pion pole and give a pi NN coupling constant g( 2) = 14.62 +/- 0.06 +/- 0.29 or f(2) = 0.0808 +/- 0.0003 +/- 0.0017. T his is higher than recently suggested values.