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Peripheral p$\overline{p}$ production and decay angular distribution in the reaction $\pi^{-}p\rightarrow\p\overline{p}$n at 18.8 and 9.8 GeV
A total of 13920 pi /sup -/p to ppn events measured in a spark chamber experiment at 9.8 GeV incident pi /sup -/ momentum are compared with data recently published on the same reaction at 18.8 GeV. The s- dependence of the total cross section, the shape of d/sup 2/ sigma /d Mdt, and the pp decay ang...
| Autores principales: | , , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
1974
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/0550-3213(74)90015-7 http://cds.cern.ch/record/413725 |
| _version_ | 1780894692870717440 |
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| author | Hyams, Bernard David Blum, W Dietl, H Grayer, G Jones, C Koch, W Lorenz, E Luetjens, G Männer, W Meissburger, J Stierlin, U Weilhammer, Peter |
| author_facet | Hyams, Bernard David Blum, W Dietl, H Grayer, G Jones, C Koch, W Lorenz, E Luetjens, G Männer, W Meissburger, J Stierlin, U Weilhammer, Peter |
| author_sort | Hyams, Bernard David |
| collection | CERN |
| description | A total of 13920 pi /sup -/p to ppn events measured in a spark chamber experiment at 9.8 GeV incident pi /sup -/ momentum are compared with data recently published on the same reaction at 18.8 GeV. The s- dependence of the total cross section, the shape of d/sup 2/ sigma /d Mdt, and the pp decay angular distributions at both energies suggest that the production process is dominated by one-pion exchange. This is supported by comparison with new pi /sup +/p to pnp and pp to pi /sup +/ pi /sup -/ annihilation data. An interpretation of the angular distribution by partial waves is discussed, and results from a fit with a Breit-Wigner parametrization are presented. The cross section for the reaction pi /sup -/p to ppn in the range M/sub pp/<or=2.7 GeV and mod t/sub np/ mod <or=0.3 GeV/sup 2/ has been determined to be sigma =6.5+or-0.9 mu b at 9.8 GeV. (23 refs). |
| id | cern-413725 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 1974 |
| record_format | invenio |
| spelling | cern-4137252019-09-30T06:29:59Zdoi:10.1016/0550-3213(74)90015-7http://cds.cern.ch/record/413725engHyams, Bernard DavidBlum, WDietl, HGrayer, GJones, CKoch, WLorenz, ELuetjens, GMänner, WMeissburger, JStierlin, UWeilhammer, PeterPeripheral p$\overline{p}$ production and decay angular distribution in the reaction $\pi^{-}p\rightarrow\p\overline{p}$n at 18.8 and 9.8 GeVParticle PhysicsA total of 13920 pi /sup -/p to ppn events measured in a spark chamber experiment at 9.8 GeV incident pi /sup -/ momentum are compared with data recently published on the same reaction at 18.8 GeV. The s- dependence of the total cross section, the shape of d/sup 2/ sigma /d Mdt, and the pp decay angular distributions at both energies suggest that the production process is dominated by one-pion exchange. This is supported by comparison with new pi /sup +/p to pnp and pp to pi /sup +/ pi /sup -/ annihilation data. An interpretation of the angular distribution by partial waves is discussed, and results from a fit with a Breit-Wigner parametrization are presented. The cross section for the reaction pi /sup -/p to ppn in the range M/sub pp/<or=2.7 GeV and mod t/sub np/ mod <or=0.3 GeV/sup 2/ has been determined to be sigma =6.5+or-0.9 mu b at 9.8 GeV. (23 refs).oai:cds.cern.ch:4137251974 |
| spellingShingle | Particle Physics Hyams, Bernard David Blum, W Dietl, H Grayer, G Jones, C Koch, W Lorenz, E Luetjens, G Männer, W Meissburger, J Stierlin, U Weilhammer, Peter Peripheral p$\overline{p}$ production and decay angular distribution in the reaction $\pi^{-}p\rightarrow\p\overline{p}$n at 18.8 and 9.8 GeV |
| title | Peripheral p$\overline{p}$ production and decay angular distribution in the reaction $\pi^{-}p\rightarrow\p\overline{p}$n at 18.8 and 9.8 GeV |
| title_full | Peripheral p$\overline{p}$ production and decay angular distribution in the reaction $\pi^{-}p\rightarrow\p\overline{p}$n at 18.8 and 9.8 GeV |
| title_fullStr | Peripheral p$\overline{p}$ production and decay angular distribution in the reaction $\pi^{-}p\rightarrow\p\overline{p}$n at 18.8 and 9.8 GeV |
| title_full_unstemmed | Peripheral p$\overline{p}$ production and decay angular distribution in the reaction $\pi^{-}p\rightarrow\p\overline{p}$n at 18.8 and 9.8 GeV |
| title_short | Peripheral p$\overline{p}$ production and decay angular distribution in the reaction $\pi^{-}p\rightarrow\p\overline{p}$n at 18.8 and 9.8 GeV |
| title_sort | peripheral p$\overline{p}$ production and decay angular distribution in the reaction $\pi^{-}p\rightarrow\p\overline{p}$n at 18.8 and 9.8 gev |
| topic | Particle Physics |
| url | https://dx.doi.org/10.1016/0550-3213(74)90015-7 http://cds.cern.ch/record/413725 |
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