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A new measurement of the cross section of the inverse muon decay reaction νμ + e− → μ− + νe

Authors :
Geiregat, D.
Vilain, P.
Wilquet, G.
Bergsma, F.
Binder, U.
Burkard, H.
Eisenberg, Y.
Flegel, W.
Grote, H.
Mouthuy, T.
Øveras, H.
Panman, J.
Santacesaria, R.
Winter, K.
Zacek, G.
Zacek, V.
Beyer, R.
Blobel, V.
Büsser, F. W.
Foos, C.
Gerland, L.
Layda, T.
Niebergall, F.
Raëdel, G.
Stahëlin, P.
Tadsen, A.
Voss, T.
Delbar, T.
Favart, D.
Gregoire, G.
Knoops, E.
Gorbunov, P.
Grigoriev, E.
Khovansky, V.
Maslennikov, A.
Rosanov, A.
Lippich, W.
Nathaniel, A.
Staude, A.
Caria, M.
Eckart, B.
Ereditato, A.
Gorini, E.
Grancagnolo, F.
Iasevoli, R.
Palladino, V.
Strolin, P.
Capone, Antonio
DE PEDIS, D.
DI CAPUA, E.
Dore, Ubaldo
Loverre, Pier Ferruccio
RAMBALDI FRENKEL, A.
Piredda, G.
Zanello, D.
Source :
Physics Letters B. 247:131-136
Publication Year :
1990
Publisher :
Elsevier BV, 1990.

Abstract

We have measured the cross section for inverse muon decay in the CERN neutrino wide band beam. From 4808 events observed in the CHARM II detector we derived for the Born term of the asymptotic cross section slope the result (18.16±1.36) × 10 −42 cm 2 GeV −1 . This cross section is in good agreement with the standard model prediction and allows to constrain the scalar coupling of the electron and muon to their neutrinos to | g LL S | 2

Details

ISSN :
03702693
Volume :
247
Database :
OpenAIRE
Journal :
Physics Letters B
Accession number :
edsair.doi.dedup.....f053fad9f79dbfd72afa74d69230d937
Full Text :
https://doi.org/10.1016/0370-2693(90)91061-f