Evidence for two narrow pp resonances at 2020 MeV and 2200 MeV

From the study of the reaction pi /sup -/p to p/sub F/pp pi /sup -/ using a fast proton (p/sub F/) trigger device in the CERN Omega spectrometer, the authors find evidence for two narrow pp states produced mainly in association with a Delta degrees (1232) and a N degrees (1520). The statistical sign...

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Detalles Bibliográficos
Autores principales: Benkheiri, P, Boucrot, J, Bouquet, B, Briandet, P, D'Almagne, B, Dang-Vu, C, De Rosny, G, Eisenstein, B I, Ferrer, A, Fleury, P, Grossetête, B, Irwin, G, Jacholkowski, A, Lahellec, A, Nguyen, H, Petroff, P, Richard, F, Rivet, P, Roudeau, P, Rougé, A, Rumpf, M, Six, J, Thénard, J M, Treille, D, Volte, A, Yaffe, D, Yiou, T P, Yoshida, H
Lenguaje:eng
Publicado: 1977
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(77)90477-4
http://cds.cern.ch/record/878584
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author Benkheiri, P
Boucrot, J
Bouquet, B
Briandet, P
D'Almagne, B
Dang-Vu, C
De Rosny, G
Eisenstein, B I
Ferrer, A
Fleury, P
Grossetête, B
Irwin, G
Jacholkowski, A
Lahellec, A
Nguyen, H
Petroff, P
Richard, F
Rivet, P
Roudeau, P
Rougé, A
Rumpf, M
Six, J
Thénard, J M
Treille, D
Volte, A
Yaffe, D
Yiou, T P
Yoshida, H
author_facet Benkheiri, P
Boucrot, J
Bouquet, B
Briandet, P
D'Almagne, B
Dang-Vu, C
De Rosny, G
Eisenstein, B I
Ferrer, A
Fleury, P
Grossetête, B
Irwin, G
Jacholkowski, A
Lahellec, A
Nguyen, H
Petroff, P
Richard, F
Rivet, P
Roudeau, P
Rougé, A
Rumpf, M
Six, J
Thénard, J M
Treille, D
Volte, A
Yaffe, D
Yiou, T P
Yoshida, H
author_sort Benkheiri, P
collection CERN
description From the study of the reaction pi /sup -/p to p/sub F/pp pi /sup -/ using a fast proton (p/sub F/) trigger device in the CERN Omega spectrometer, the authors find evidence for two narrow pp states produced mainly in association with a Delta degrees (1232) and a N degrees (1520). The statistical significance of each peak is greater than 6 standard deviations. Masses and natural widths of these resonances are respectively M/sub 1/=2020+or-3 MeV, Gamma /sub 1 /=24+or-12 MeV and M/sub 2/=2204+or-5 MeV, Gamma /sub 2/=16/sub -16 //sup +20/ MeV. The data are consistent with a small production of the narrow approximately 1935 MeV resonance already reported. Production cross sections for these new pp resonances are given. (8 refs).
id cern-878584
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1977
record_format invenio
spelling cern-8785842019-09-30T06:29:59Zdoi:10.1016/0370-2693(77)90477-4http://cds.cern.ch/record/878584engBenkheiri, PBoucrot, JBouquet, BBriandet, PD'Almagne, BDang-Vu, CDe Rosny, GEisenstein, B IFerrer, AFleury, PGrossetête, BIrwin, GJacholkowski, ALahellec, ANguyen, HPetroff, PRichard, FRivet, PRoudeau, PRougé, ARumpf, MSix, JThénard, J MTreille, DVolte, AYaffe, DYiou, T PYoshida, HEvidence for two narrow pp resonances at 2020 MeV and 2200 MeVParticle Physics - PhenomenologyFrom the study of the reaction pi /sup -/p to p/sub F/pp pi /sup -/ using a fast proton (p/sub F/) trigger device in the CERN Omega spectrometer, the authors find evidence for two narrow pp states produced mainly in association with a Delta degrees (1232) and a N degrees (1520). The statistical significance of each peak is greater than 6 standard deviations. Masses and natural widths of these resonances are respectively M/sub 1/=2020+or-3 MeV, Gamma /sub 1 /=24+or-12 MeV and M/sub 2/=2204+or-5 MeV, Gamma /sub 2/=16/sub -16 //sup +20/ MeV. The data are consistent with a small production of the narrow approximately 1935 MeV resonance already reported. Production cross sections for these new pp resonances are given. (8 refs).oai:cds.cern.ch:8785841977
spellingShingle Particle Physics - Phenomenology
Benkheiri, P
Boucrot, J
Bouquet, B
Briandet, P
D'Almagne, B
Dang-Vu, C
De Rosny, G
Eisenstein, B I
Ferrer, A
Fleury, P
Grossetête, B
Irwin, G
Jacholkowski, A
Lahellec, A
Nguyen, H
Petroff, P
Richard, F
Rivet, P
Roudeau, P
Rougé, A
Rumpf, M
Six, J
Thénard, J M
Treille, D
Volte, A
Yaffe, D
Yiou, T P
Yoshida, H
Evidence for two narrow pp resonances at 2020 MeV and 2200 MeV
title Evidence for two narrow pp resonances at 2020 MeV and 2200 MeV
title_full Evidence for two narrow pp resonances at 2020 MeV and 2200 MeV
title_fullStr Evidence for two narrow pp resonances at 2020 MeV and 2200 MeV
title_full_unstemmed Evidence for two narrow pp resonances at 2020 MeV and 2200 MeV
title_short Evidence for two narrow pp resonances at 2020 MeV and 2200 MeV
title_sort evidence for two narrow pp resonances at 2020 mev and 2200 mev
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/0370-2693(77)90477-4
http://cds.cern.ch/record/878584
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