Results from Searching for Muonium to Antimuonium Conversion

/ Authors

K. Jungmann, A. Grossmann, J. Merkel, V.Meyer, G. Putlitz, I. Reinhard, K. Trager, P. Schmidt, L. Willmann, R. Engfer

and 21 more authors

H. Wirtz, R. Abela, W. Bertl, D. Renker, H. Walter, V. Karpuchin, I. Kisel, A. Korenchenko, S. Korenchenko, N. Kravchuk, N. Kuchinsky, A. Moiseenko, J. Bagaturia, D. Mzavia, T. Sakhelashvili, V. Heidelberg, U. Zuerich, Psi, J. Dubna, U. Tbilisi, Yale

/ Abstract

A new result from searching for muonium to antimuonium conversion is reported which sets an upper limit on the coupling constant in an assumed $(V-A) \times (V-A)$ type interaction of $G_{M\bar{M}} \leq 3\cdot 10^{-3} G_F$ ~ (90% C.L.). A particular Z_8 and a minimal 331 GUT model can be ruled out. Further new and stringent limits can be set for masses of bileptonic gauge bosons and $\lambda$ parameters in R-parity breaking supersymmetric models.

Journal: arXiv: Nuclear Experiment