A MEASUREMENT OF THE FORM-FACTOR RATIOS IN THE DECAY D-](K)OVER-BAR(ASTERISK-0)MU(+)NU(MU)()

Authors
ADAMOVICH M ALEXANDROV Y ANGELINI C BARBERIS D CERADINI F CIANFARANI C DAMERI M DARBO G DUANE A FLAMINIO V FORINO A FRENCH BR FRENKEL A GEMME C HARRISON K HUMMADI N HURST R KIRK A LAZZERONI C MALFERRARI L MARTELLOTTI G MARTINENGO P MAZZANTI P MCEWEN JG NECHAEVA P OSCULATI B PASSASEO M PENSO G QUARENI A ROSSI L VERZOCCHI M WEBSDALE D ZAVERTYAEV M
Citation
M. Adamovich et al., A MEASUREMENT OF THE FORM-FACTOR RATIOS IN THE DECAY D-](K)OVER-BAR(ASTERISK-0)MU(+)NU(MU)(), The European Physical Journal. C: Particles and Fields, 6(1), 1999, pp. 35-41
Citations number
18
Categorie Soggetti
Physics, Particles & Fields
Journal title
The European Physical Journal. C: Particles and Fields → ACNP
ISSN journal
14346044
Volume
6
Issue
1
Year of publication
1999
Pages
35 - 41
Database
ISI
SICI code
1434-6044(1999)6:1<35:AMOTFR>2.0.ZU;2-O
Abstract
The form-factor ratios in the decay D+ --> (K) over bar(0)mu(+)upsilo n(mu) have been measured using a sample of 763 events produced in the WA92 fixed-target experiment. The values obtained are R-V = 1.45 +/- 0 .23 +/- 0.07, R-2 = 1.00 +/- 0.15 +/- 0.03 and the corresponding ratio of longitudinal to transverse polarisation is Gamma(L)/Gamma(T) = 1.0 9 +/- 0.10 +/- 0.02.