Precise Measurement of pi+ -> e+ nu Branching Ratio (CROSBI ID 763411)
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Podaci o odgovornosti
Frlež, E. ; Alonzi, L.P. ; Baranov, V.A. ; Bertl, W. ; Bychkov, M. ; Bystritsky, Yu.M. ; Khomutov, N.V. ; Korenchenko, A.S. ; Korenchenko, S.M. ; Korolija, Milorad ; Kozlowski, T. ; Kravchuk, N.P. ; Kuchinsky, N.A. ; Mekterović, Darko ; Mzhavia, D. ; Palladino, A. ; Počanić, Dinko ; Robmann, P. ; A.M. Rozhdestvensky, A.M. ; Sidorkin, V.V. ; Straumann, U. ; Supek, Ivan ; Truöl, P. ; van der Schaaf, A. ; Velicheva, E.P. ; Volnykh, V.P.
engleski
Precise Measurement of pi+ -> e+ nu Branching Ratio
The PEN Collaboration is conducting a new measurement of the pi+ -> e+ nu branching ratio at the Paul Scherrer Institute, with the goal uncertainty of delta B/B(pie2)=5E-4 or lower. At present, the combined accuracy of all published pie2 decay measurements lags behind the theoretical calculation by a factor of 40. In this contribution we report on the PEN detector configuration and its performance during two development runs done in 2007 and 2008.
pions; leptons; decay
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Podaci o izdanju
e-Print: arXiv:0812.2829 [hep-ex]
2008.
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