A PRECISE MEASUREMENT OF THE CROSS-SECTION OF THE INVERSE MUON DECAY NU(MU)+E(-)-]MU(-)+NU(E)

VILAIN P., WILQUET G., BEYER R., FLEGEL W., GROTE H., MOUTHUY T., ...Daha Fazla

PHYSICS LETTERS B, cilt.364, sa.2, ss.121-126, 1995 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 364 Sayı: 2
  • Basım Tarihi: 1995
  • Doi Numarası: 10.1016/0370-2693(95)01298-6
  • Dergi Adı: PHYSICS LETTERS B
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.121-126
  • İstanbul Üniversitesi Adresli: Hayır

Özet

We report our final results from the analysis of the full high statistics sample of events of the reaction nu(mu) + e(-) --> mu(-) + nu(e) collected with the CHARM II detector in the CERN wide-band neutrino beam during the years 1988 to 1991. From a signal of 15 758 +/- 324 inverse muon decay events we derived, in the Born approximation, a value of (16.51 +/- 0.93) x 10(-42) cm(2) GeV-1 for the asymptotic cross section slope sigma/E(n)u, in good agreement with the Standard Model prediction of 17.23 x 10(-42) cm(2) GeV-1. The result constrains the scalar coupling of the electron and the muon to \g(LL)(S)\(2) < 0.475 at 90% CL.