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Observation of a spin 4 neutral meson with 2 GeV mass decaying in $\pi^{0} \pi^{0}$
The invariant mass spectrum of neutral meson states from π−p interactions at 40 GeV/c incident momentum has been investigated in a high statistics experiment performed at the 70 GeV IHEP accelerator. To detect the high energy photons coming from the produced neutral states, a hodoscope spectrometer...
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
1975
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/0370-2693(75)90480-3 http://cds.cern.ch/record/1221882 |
| _version_ | 1780918217817980928 |
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| author | Apel, W D Augenstein, K. Bertolucci, E. Donskov, S.V. Inyakin, A.V. Kachanov, V.A. Kittenberger, W. Krasnokutsky, R.N. Kruger, M. Leder, G. Lednev, A.A. Mannelli, I. Mikhailov, Yu.V. Müller, H. Pierazzini, G.M. Prokoshkin, Yu.D. Quaglia, M. Schneider, H. Scribano, A. Sergiampietri, F. Shuvalov, R.S. Sigurdsson, G. Steuer, M. Vincelli, M.L. |
| author_facet | Apel, W D Augenstein, K. Bertolucci, E. Donskov, S.V. Inyakin, A.V. Kachanov, V.A. Kittenberger, W. Krasnokutsky, R.N. Kruger, M. Leder, G. Lednev, A.A. Mannelli, I. Mikhailov, Yu.V. Müller, H. Pierazzini, G.M. Prokoshkin, Yu.D. Quaglia, M. Schneider, H. Scribano, A. Sergiampietri, F. Shuvalov, R.S. Sigurdsson, G. Steuer, M. Vincelli, M.L. |
| author_sort | Apel, W D |
| collection | CERN |
| description | The invariant mass spectrum of neutral meson states from π−p interactions at 40 GeV/c incident momentum has been investigated in a high statistics experiment performed at the 70 GeV IHEP accelerator. To detect the high energy photons coming from the produced neutral states, a hodoscope spectrometer with a computer on-line was used. A clear structure on the mass spectrum of dipions produced in the reaction π−p→π°π°n is observed at 2 GeV. The decay angular distributions show in this mass region the variation with mass typical of a state with a spin J = 4. The mass of the observed meson is found to be M = (2020±30)MeV and the estimate of the full width is (180±60) MeV. |
| id | cern-1221882 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 1975 |
| record_format | invenio |
| spelling | cern-12218822019-09-30T06:29:59Zdoi:10.1016/0370-2693(75)90480-3http://cds.cern.ch/record/1221882engApel, W DAugenstein, K.Bertolucci, E.Donskov, S.V.Inyakin, A.V.Kachanov, V.A.Kittenberger, W.Krasnokutsky, R.N.Kruger, M.Leder, G.Lednev, A.A.Mannelli, I.Mikhailov, Yu.V.Müller, H.Pierazzini, G.M.Prokoshkin, Yu.D.Quaglia, M.Schneider, H.Scribano, A.Sergiampietri, F.Shuvalov, R.S.Sigurdsson, G.Steuer, M.Vincelli, M.L.Observation of a spin 4 neutral meson with 2 GeV mass decaying in $\pi^{0} \pi^{0}$Particle Physics - ExperimentThe invariant mass spectrum of neutral meson states from π−p interactions at 40 GeV/c incident momentum has been investigated in a high statistics experiment performed at the 70 GeV IHEP accelerator. To detect the high energy photons coming from the produced neutral states, a hodoscope spectrometer with a computer on-line was used. A clear structure on the mass spectrum of dipions produced in the reaction π−p→π°π°n is observed at 2 GeV. The decay angular distributions show in this mass region the variation with mass typical of a state with a spin J = 4. The mass of the observed meson is found to be M = (2020±30)MeV and the estimate of the full width is (180±60) MeV.oai:cds.cern.ch:12218821975 |
| spellingShingle | Particle Physics - Experiment Apel, W D Augenstein, K. Bertolucci, E. Donskov, S.V. Inyakin, A.V. Kachanov, V.A. Kittenberger, W. Krasnokutsky, R.N. Kruger, M. Leder, G. Lednev, A.A. Mannelli, I. Mikhailov, Yu.V. Müller, H. Pierazzini, G.M. Prokoshkin, Yu.D. Quaglia, M. Schneider, H. Scribano, A. Sergiampietri, F. Shuvalov, R.S. Sigurdsson, G. Steuer, M. Vincelli, M.L. Observation of a spin 4 neutral meson with 2 GeV mass decaying in $\pi^{0} \pi^{0}$ |
| title | Observation of a spin 4 neutral meson with 2 GeV mass decaying in $\pi^{0} \pi^{0}$ |
| title_full | Observation of a spin 4 neutral meson with 2 GeV mass decaying in $\pi^{0} \pi^{0}$ |
| title_fullStr | Observation of a spin 4 neutral meson with 2 GeV mass decaying in $\pi^{0} \pi^{0}$ |
| title_full_unstemmed | Observation of a spin 4 neutral meson with 2 GeV mass decaying in $\pi^{0} \pi^{0}$ |
| title_short | Observation of a spin 4 neutral meson with 2 GeV mass decaying in $\pi^{0} \pi^{0}$ |
| title_sort | observation of a spin 4 neutral meson with 2 gev mass decaying in $\pi^{0} \pi^{0}$ |
| topic | Particle Physics - Experiment |
| url | https://dx.doi.org/10.1016/0370-2693(75)90480-3 http://cds.cern.ch/record/1221882 |
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