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Combined analysis of meson channels with I=1, C = -1 from 1940 to 2410 MeV
New Crystal Barrel data are reported for pbar-p -> omega-pizero and pbar-p -> omega eta-pizero with omega decaying to piplus-piminus-pizero. The shapes of angular distributions agree well with those for data where omega -> pizero-gamma; this is a valuable cross-check on systematic errors. T...
Autores principales: | , , , , , , , , |
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Lenguaje: | eng |
Publicado: |
2011
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1016/S0370-2693(02)02302-X http://cds.cern.ch/record/1385131 |
_version_ | 1780923192802541568 |
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author | Anisovich, A.V. Baker, C.A. Batty, C.J. Bugg, D.V. Montanet, L. Nikonov, V.A. Sarantsev, A.V. Sarantsev, V.V. Zou, B.S. |
author_facet | Anisovich, A.V. Baker, C.A. Batty, C.J. Bugg, D.V. Montanet, L. Nikonov, V.A. Sarantsev, A.V. Sarantsev, V.V. Zou, B.S. |
author_sort | Anisovich, A.V. |
collection | CERN |
description | New Crystal Barrel data are reported for pbar-p -> omega-pizero and pbar-p -> omega eta-pizero with omega decaying to piplus-piminus-pizero. The shapes of angular distributions agree well with those for data where omega -> pizero-gamma; this is a valuable cross-check on systematic errors. The new data provide good measurements of vector and tensor polarisations P_y, T20, T21 and T22 of the omega. These lead to significant improvements in parameters of several resonances reported earlier. New values of masses and widths (in Mev) are: J^PC = 5^-- (2300+-45, 260+-75), J^PC = 3^-- (2260+-20, 160+-25), J^PC = 1^+- (2240+-35, 320+-85), and J^PC = 1^-- (2110+-35, 230+-50). A remarkable feature of the data is that vector polarisation P_y is close to zero everywhere. It follows that all interfering amplitudes have relative phases close to 0 or 180 deg. Tensor polarisations are large. |
id | cern-1385131 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2011 |
record_format | invenio |
spelling | cern-13851312019-09-30T06:29:59Zdoi:10.1016/S0370-2693(02)02302-Xhttp://cds.cern.ch/record/1385131engAnisovich, A.V.Baker, C.A.Batty, C.J.Bugg, D.V.Montanet, L.Nikonov, V.A.Sarantsev, A.V.Sarantsev, V.V.Zou, B.S.Combined analysis of meson channels with I=1, C = -1 from 1940 to 2410 MeVParticle Physics - ExperimentNew Crystal Barrel data are reported for pbar-p -> omega-pizero and pbar-p -> omega eta-pizero with omega decaying to piplus-piminus-pizero. The shapes of angular distributions agree well with those for data where omega -> pizero-gamma; this is a valuable cross-check on systematic errors. The new data provide good measurements of vector and tensor polarisations P_y, T20, T21 and T22 of the omega. These lead to significant improvements in parameters of several resonances reported earlier. New values of masses and widths (in Mev) are: J^PC = 5^-- (2300+-45, 260+-75), J^PC = 3^-- (2260+-20, 160+-25), J^PC = 1^+- (2240+-35, 320+-85), and J^PC = 1^-- (2110+-35, 230+-50). A remarkable feature of the data is that vector polarisation P_y is close to zero everywhere. It follows that all interfering amplitudes have relative phases close to 0 or 180 deg. Tensor polarisations are large.arXiv:1109.5247QMPI01QMPI01oai:cds.cern.ch:13851312011-09-27 |
spellingShingle | Particle Physics - Experiment Anisovich, A.V. Baker, C.A. Batty, C.J. Bugg, D.V. Montanet, L. Nikonov, V.A. Sarantsev, A.V. Sarantsev, V.V. Zou, B.S. Combined analysis of meson channels with I=1, C = -1 from 1940 to 2410 MeV |
title | Combined analysis of meson channels with I=1, C = -1 from 1940 to 2410 MeV |
title_full | Combined analysis of meson channels with I=1, C = -1 from 1940 to 2410 MeV |
title_fullStr | Combined analysis of meson channels with I=1, C = -1 from 1940 to 2410 MeV |
title_full_unstemmed | Combined analysis of meson channels with I=1, C = -1 from 1940 to 2410 MeV |
title_short | Combined analysis of meson channels with I=1, C = -1 from 1940 to 2410 MeV |
title_sort | combined analysis of meson channels with i=1, c = -1 from 1940 to 2410 mev |
topic | Particle Physics - Experiment |
url | https://dx.doi.org/10.1016/S0370-2693(02)02302-X http://cds.cern.ch/record/1385131 |
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