Observation of radiative muon capture on the proton

P. Depommier‘, D. S. Armstrong3, G. Azuelos114, W. Bert15, M. Blecher3, C-Q. Chen2, B. Doyle’, T. P. Gorringe’, P. Gumplinger2, M. D. Hasinoffz, G. Jonkmansr, J. A. Macdonald4, S. C. McDonald’, M. Munro6, J-M. Poutissou4, R. Poutissou4, B. C. Robertson7, E. Saettler2, D. G. Sample2, C. Sigler3, G. N. Taylor’, and D. H. Wright* r Uniuersite’ de Mont&al, C a n a d a 2 University of British Columbnia, Vancouver, Canada 3 Virginia Polytechnic Institute and State University, Blacksburg, U.S.A. 4 TRIUMF, Vancouver, Canada 5Paul Scherrer Institut, Villigen, Switzerland 6 University of Melbourne, Austmlia 7Queen’s University, Kingston, Canada (Received September 3, 1994)