New bounds from a search for muonium to antimuonium conversion
/ Authors
L.Willmann, P.V.Schmidt, H.P.Wirtz, R.Abela, V.Baranov, J.Bagaturia, W.Bertl, R.Engfer, A.Grossmann, V.W.Hughes
and 24 more authors
K.Jungmann, V.Karpuchin, I.Kisel, A.Korenchenko, S.Korenchenko, N.Kravchuk, N.Kuchinsky, A.Leuschner, V.Meyer, J.Merkel, A.Moiseenko, D.Mzavia, G. Putlitz, W.Reichart, I.Reinhard, D.Renker, T.Sakhelashvilli, K.Trager, Hci Heidelberg, Zurich, Psi, Dubna, Tbilisi, Yale
/ Abstract
A new upper limit for the probability of spontaneous muonium to antimuonium conversion was established at P-M (M over bar) less than or equal to 8.3 x 10(-11) (90% C.L.) in 0.1 T magnetic field, which implies consequences for speculative extensions to the standard model. Coupling parameters in R-parity-violating supersymmetry and the mass of a flavor diagonal bileptonic gauge boson can be significantly restricted. A Z(8) model with radiative mass generation through heavy lepton seed and the minimal version of 331 models are disfavored. [S0031-9007(98)08068-5].
Journal: Physical Review Letters