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Measurements of the reaction $\overline{p}p \to \phi \eta$ of antiproton annihilation at rest at three hydrogen target densities
The proton-antiproton annihilation at rest into the $\phi\eta$ final state was measured for three different target densities: liquid hydrogen, gaseous hydrogen at NTP and at a low pressure of 5 mbar. The yield of this reaction in the liquid hydrogen target is smaller than in the low-pressure gas tar...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
1998
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| Materias: | |
| Acceso en línea: | http://cds.cern.ch/record/357548 |
| _version_ | 1780892552924233728 |
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| author | Alberico, V Bertin, A |
| author_facet | Alberico, V Bertin, A |
| author_sort | Alberico, V |
| collection | CERN |
| description | The proton-antiproton annihilation at rest into the $\phi\eta$ final state was measured for three different target densities: liquid hydrogen, gaseous hydrogen at NTP and at a low pressure of 5 mbar. The yield of this reaction in the liquid hydrogen target is smaller than in the low-pressure gas target. The branching ratios of the $\phi\eta$ channel were calculated on the basis of simultaneous analysis of the three data samples. The branching ratio for annihilation into $\phi\eta$ from the $^3S_1$ protonium state turns out to be about ten times smaller as compared to the one from the $^1P_1$ state. |
| id | cern-357548 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 1998 |
| record_format | invenio |
| spelling | cern-3575482019-09-30T06:29:59Zhttp://cds.cern.ch/record/357548engAlberico, VBertin, AMeasurements of the reaction $\overline{p}p \to \phi \eta$ of antiproton annihilation at rest at three hydrogen target densitiesParticle Physics - ExperimentThe proton-antiproton annihilation at rest into the $\phi\eta$ final state was measured for three different target densities: liquid hydrogen, gaseous hydrogen at NTP and at a low pressure of 5 mbar. The yield of this reaction in the liquid hydrogen target is smaller than in the low-pressure gas target. The branching ratios of the $\phi\eta$ channel were calculated on the basis of simultaneous analysis of the three data samples. The branching ratio for annihilation into $\phi\eta$ from the $^3S_1$ protonium state turns out to be about ten times smaller as compared to the one from the $^1P_1$ state.hep-ex/9806017oai:cds.cern.ch:3575481998 |
| spellingShingle | Particle Physics - Experiment Alberico, V Bertin, A Measurements of the reaction $\overline{p}p \to \phi \eta$ of antiproton annihilation at rest at three hydrogen target densities |
| title | Measurements of the reaction $\overline{p}p \to \phi \eta$ of antiproton annihilation at rest at three hydrogen target densities |
| title_full | Measurements of the reaction $\overline{p}p \to \phi \eta$ of antiproton annihilation at rest at three hydrogen target densities |
| title_fullStr | Measurements of the reaction $\overline{p}p \to \phi \eta$ of antiproton annihilation at rest at three hydrogen target densities |
| title_full_unstemmed | Measurements of the reaction $\overline{p}p \to \phi \eta$ of antiproton annihilation at rest at three hydrogen target densities |
| title_short | Measurements of the reaction $\overline{p}p \to \phi \eta$ of antiproton annihilation at rest at three hydrogen target densities |
| title_sort | measurements of the reaction $\overline{p}p \to \phi \eta$ of antiproton annihilation at rest at three hydrogen target densities |
| topic | Particle Physics - Experiment |
| url | http://cds.cern.ch/record/357548 |
| work_keys_str_mv | AT albericov measurementsofthereactionoverlinepptophietaofantiprotonannihilationatrestatthreehydrogentargetdensities AT bertina measurementsofthereactionoverlinepptophietaofantiprotonannihilationatrestatthreehydrogentargetdensities |