Evidence for a narrow width boson of mass 2.95 GeV

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In a search for resonances coupled to the pp pi /sup -/ system, pi /sup -/p interactions at 16 GeV/c giving a forward antiproton have been studied, using the Omega spectrometer at CERN. In the final states involving a p, p and pi /sup -/ a 5.6 (6.3) standard deviation enhancement is observed in the...

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Autores principales: Evangelista, C, Armstrong, T, Best, C, Costa, G, Donald, R A, Edwards, D N, Edwards, M, French, Bernard R, Ghidini, B, Gordon, J, Houlden, M A, Hughes, I S, Lambacher, H D, Lewis, G M, Mandelli, L, Mättig, P, Miller, D H, Mitaroff, W A, Müller, K, Palano, A, Palazzi-Cerrina, C, Paul, E, Pensotti, S, Perini, L, Picciarelli, V, Rühmer, W, Strub, R, Thompson, A S, Turnbull, R M, Woodworth, P L, Zito, G
Lenguaje:eng
Publicado: 1977
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(77)90081-8
http://cds.cern.ch/record/878494
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author Evangelista, C
Armstrong, T
Best, C
Costa, G
Donald, R A
Edwards, D N
Edwards, M
French, Bernard R
Ghidini, B
Gordon, J
Houlden, M A
Hughes, I S
Lambacher, H D
Lewis, G M
Mandelli, L
Mättig, P
Miller, D H
Mitaroff, W A
Müller, K
Palano, A
Palazzi-Cerrina, C
Paul, E
Pensotti, S
Perini, L
Picciarelli, V
Rühmer, W
Strub, R
Thompson, A S
Turnbull, R M
Woodworth, P L
Zito, G
author_facet Evangelista, C
Armstrong, T
Best, C
Costa, G
Donald, R A
Edwards, D N
Edwards, M
French, Bernard R
Ghidini, B
Gordon, J
Houlden, M A
Hughes, I S
Lambacher, H D
Lewis, G M
Mandelli, L
Mättig, P
Miller, D H
Mitaroff, W A
Müller, K
Palano, A
Palazzi-Cerrina, C
Paul, E
Pensotti, S
Perini, L
Picciarelli, V
Rühmer, W
Strub, R
Thompson, A S
Turnbull, R M
Woodworth, P L
Zito, G
author_sort Evangelista, C
collection CERN
description In a search for resonances coupled to the pp pi /sup -/ system, pi /sup -/p interactions at 16 GeV/c giving a forward antiproton have been studied, using the Omega spectrometer at CERN. In the final states involving a p, p and pi /sup -/ a 5.6 (6.3) standard deviation enhancement is observed in the pp pi /sup -/ mass spectrum at (2.95+or-0.01) GeV with a width consistent with the resolution ( sigma =15 MeV). The production cross section*branching ratio is estimated to be of the order 1 mu b. The data are consistent with a resonance decaying partly via intermediate pp final states. (5 refs).
id cern-878494
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1977
record_format invenio
spelling cern-8784942019-09-30T06:29:59Zdoi:10.1016/0370-2693(77)90081-8http://cds.cern.ch/record/878494engEvangelista, CArmstrong, TBest, CCosta, GDonald, R AEdwards, D NEdwards, MFrench, Bernard RGhidini, BGordon, JHoulden, M AHughes, I SLambacher, H DLewis, G MMandelli, LMättig, PMiller, D HMitaroff, W AMüller, KPalano, APalazzi-Cerrina, CPaul, EPensotti, SPerini, LPicciarelli, VRühmer, WStrub, RThompson, A STurnbull, R MWoodworth, P LZito, GEvidence for a narrow width boson of mass 2.95 GeVParticle Physics - PhenomenologyIn a search for resonances coupled to the pp pi /sup -/ system, pi /sup -/p interactions at 16 GeV/c giving a forward antiproton have been studied, using the Omega spectrometer at CERN. In the final states involving a p, p and pi /sup -/ a 5.6 (6.3) standard deviation enhancement is observed in the pp pi /sup -/ mass spectrum at (2.95+or-0.01) GeV with a width consistent with the resolution ( sigma =15 MeV). The production cross section*branching ratio is estimated to be of the order 1 mu b. The data are consistent with a resonance decaying partly via intermediate pp final states. (5 refs).oai:cds.cern.ch:8784941977
spellingShingle Particle Physics - Phenomenology
Evangelista, C
Armstrong, T
Best, C
Costa, G
Donald, R A
Edwards, D N
Edwards, M
French, Bernard R
Ghidini, B
Gordon, J
Houlden, M A
Hughes, I S
Lambacher, H D
Lewis, G M
Mandelli, L
Mättig, P
Miller, D H
Mitaroff, W A
Müller, K
Palano, A
Palazzi-Cerrina, C
Paul, E
Pensotti, S
Perini, L
Picciarelli, V
Rühmer, W
Strub, R
Thompson, A S
Turnbull, R M
Woodworth, P L
Zito, G
Evidence for a narrow width boson of mass 2.95 GeV
title Evidence for a narrow width boson of mass 2.95 GeV
title_full Evidence for a narrow width boson of mass 2.95 GeV
title_fullStr Evidence for a narrow width boson of mass 2.95 GeV
title_full_unstemmed Evidence for a narrow width boson of mass 2.95 GeV
title_short Evidence for a narrow width boson of mass 2.95 GeV
title_sort evidence for a narrow width boson of mass 2.95 gev
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/0370-2693(77)90081-8
http://cds.cern.ch/record/878494
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