Title of article :
Study of np → θπ+ and np → ωπ+ annihilation reactions in flight Original Research Article
Author/Authors :
A. Filippi، نويسنده , , M. Agnello، نويسنده , , F. Balestra، نويسنده , , D. Bergo، نويسنده , , E. Botta، نويسنده , , T. Bressani، نويسنده , , M.P. Bussa، نويسنده , , L. Busso، نويسنده , , D. Calvo، نويسنده , , P. Cerello، نويسنده , , S. Costa، نويسنده , , O. Denisov، نويسنده , , C. Fanara، نويسنده , , A. Feliciello، نويسنده , , L. Ferrero، نويسنده , , R. Garfagnini، نويسنده , , A. Grasso، نويسنده , , F. Iazzi، نويسنده , , A. Maggiora، نويسنده , , S. Marcello، نويسنده , , et al.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1999
Pages :
42
From page :
453
To page :
494
Abstract :
The results of a study of the annihilation reactions View the MathML source and View the MathML source are reported; the data were collected by the OBELIX apparatus, with antineutrons annihilating in flight (momenta from ∼ 50 MeV/c to 405 MeV/c). Annihilation frequencies and annihilation cross sections have been deduced, for both channels, as a function of antineutron momentum. From the cross section ratio, a substantial deviation from OZI rule expectations is observed. An View the MathML source quark content in the nucleon offers a fairly plausible explanation for such an effect.
Keywords :
Antineutron-proton annihilation in flight , absolute annihilation frequencies , Measured ?-? production , elementary branching ratios , cross sections , OZI rule violation and strange content of the nucleon , OBELIX spectrometer
Journal title :
Nuclear physics A
Serial Year :
1999
Journal title :
Nuclear physics A
Record number :
1191347
Link To Document :
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