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Improved Upper Limit on Muonium to Antimuonium Conversion

1996; American Physical Society; Volume: 77; Issue: 10 Linguagem: Inglês

10.1103/physrevlett.77.1950

ISSN

1092-0145

Autores

R. Abela, J. Bagaturia, W. Bertl, R. Engfer, B. Fischer von Weikersthal, A. Großmann, V. W. Hughes, K. Jungmann, D. Kampmann, V. Karpuchin, I. Kisel, A. Klaas, S.M. Korenchenko, N.A. Kuchinsky, A. Leuschner, Björn Matthias, R. Menz, Verena Meyer, D. Mzavia, G. Otter, T. Prokscha, H. S. Pruys, G. zu Putlitz, W. Reichart, I. Reinhard, D. Renker, T. Sakhelashvilli, P. V. Schmidt, R. Seeliger, H. K. Walter, Lorenz Willmann, L. Zhang,

Tópico(s)

Neutrino Physics Research

Resumo

A new experiment has been set up at the Paul Scherrer Institut to search for muonium to antimuonium conversion. No event was found to fulfil the requested signature which consists of the coincident detection of both constituents of the antiatom in its decay. Assuming an effective (V−A)×(V−A) type interaction an improved upper limit is established for the conversion probability of PMM¯≤8×10−9 (90% C.L.), which is almost 2 orders of magnitude lower compared to previous results and provides a sensitive test for theoretical extensions of the standard model.Received 13 June 1996DOI:https://doi.org/10.1103/PhysRevLett.77.1950©1996 American Physical Society

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