@article{6a4e7f1319964d2cb52bb52ae76f3ad6,
title = "A study of pontecorvo reactions in antiproton deuterium annihilations at rest",
abstract = "The results of the analysis of a new data sample of(Formula presented.) annihilations at rest on deuterium and hydrogen, taken at the CERN LEAR by the OBELIX spectrometer, are presented. The(Formula presented.)d → π−p channel has been measured with a noticeable reduction of both the statistical and the systematic errors with respect to the previous OBELIX measurement and the branching ratio turns out to be (1.29±±0.07(stat)±0.05(syst))·10−5, in good agreement with the previous result. The(Formula presented.)d→ρ−p→π−π0p channel has been investigated for the first time and the branching ratio is evaluated to be (2.9±0.4(stat)±0.5(syst))·10−5. Finally, as a check of the spectrometer absolute calibration, the(Formula presented.)p→π+π− channel was also studied with a measured branching ratio of (4.27±0.15(stat)±0.17(syst))·10−3, in good agreement with the ASTERIX result.",
keywords = "13.75.Cs - Nucleon-nucleon interactions (including antinucleons, deuterons, etc.), 25.40.Ve - Other reactions above meson production thresholds (energies >400 MeV)",
author = "{The OBELIX Collaboration} and Ableev, {V. G.} and M. Agnello and A. Andrighetto and F. Balestra and G. Bendiscioli and A. Bertin and E. Botta and T. Bressani and M. Bruschi and Bussa, {M. P.} and L. Busso and D. Calvo and C. Cavion and B. Cereda and P. Cerello and C. Cical{\`o} and M. Corradini and S. Costa and I. D{\textquoteright}Antone and {De Castro}, S. and A. Donzella and L. Fava and A. Feliciello and L. Ferrero and A. Filippi and V. Filippini and A. Fontana and D. Galli and R. Garfagnini and U. Gastaldi and B. Giacobbe and P. Gianotti and A. Grasso and C. Guaraldo and F. Iazzi and A. Lanaro and Rizzini, {E. Lodi} and V. Lucherini and A. Maggiora and S. Marcello and U. Marconi and G. Maron and A. Masoni and B. Minetti and P. Montagna and M. Morando and F. Nichitiu and D. Panzieri and G. Pauli and M. Piccinini",
year = "1994",
month = dec,
doi = "10.1007/BF02730960",
language = "English",
volume = "107",
pages = "2837--2852",
journal = "La Rivista del Nuovo Cimento",
issn = "0369-3546",
publisher = "Societa Italiana di Fisica",
number = "12",
}