Study of Rare Pion and Muon Decays with the PIBETA Detector

Autor: Pocanic, D., Frlez, E., Koglin, J.E., Li, W., Minehart, R.C., Norum, B.E., Ritt, S., Smith, L.C., Stephens, W.A., Ziock, K.O.H., Bertl, W., Brönnimann, Ch., Crawford, J.F., Daum, M., Horisberger, R., Renker, D., Schnyder, R., Wirtz, H.P., Kalinnikov, V.A., Khomutov, N.W., Korenchenko, A.S., Korenchenko, S.M., Kravchuk, N.P., Kuchinsky, N.A., Kozlowski, T., Mzhavia, D., Tsamalaidze, Z., Ritchie, B.G., Supek, Ivan
Jazyk: angličtina
Rok vydání: 2000
Předmět:
Popis: The PIBETA detector at PSI is used to study the signals and backgrounds to rare pion and muon decays. We report the measured decay rates for \pi^+\to e^+\nu\gamma, \mu^+\to e^+\nu\nu\gamma, and \mu^+\to e^+\nu\nu e^+e^- processes, and discuss the effectiveness of the PIBETA detector in testing the limits for the lepton-family-number non-conserving muon decays. The extracted branching ratios are based on the statistics of 3.5\cdot 10^12 stopped \pi^+’ s collected in 1999 with pion beam intensities between 5\cdot 10^4\, \pi^+/s and 1\cdot 10^6\, \pi^+/s.
Databáze: OpenAIRE