Observation of a resonance in the K$_s$p decay channel at a mass of 1765 MeV/c$^2$

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dc.creatorWA89 Collaboration
dc.creatorAdamovich, M. I.
dc.creatorAlexandrov, Yu. A.
dc.creatorBarberis, D.
dc.creatorBeck, M.
dc.creatorBérat, C.
dc.creatorBeusch, W.
dc.creatorBoss, M.
dc.creatorBrons, S.
dc.creatorBrückner, W.
dc.creatorBuénerd, M.
dc.creatorBusch, C.
dc.creatorBüscher, C.
dc.creatorCharignon, F.
dc.creatorChauvin, J.
dc.creatorChudakov, E. A.
dc.creatorDersch, U.
dc.creatorDropmann, F.
dc.creatorEngelfried, J.
dc.creatorFaller, F.
dc.creatorFournier, A.
dc.creatorGerassimov, S. G.
dc.creatorGodbersen, M.
dc.creatorGrafström, P.
dc.creatorHaller, Th.
dc.creatorHeidrich, M.
dc.creatorHubbard, E.
dc.creatorHurst, R. B.
dc.creatorKönigsmann, K.
dc.creatorKonorov, I.
dc.creatorKeller, N.
dc.creatorMartens, K.
dc.creatorMartin, Ph.
dc.creatorMasciocchi, S.
dc.creatorMichaels, R.
dc.creatorMüller, U.
dc.creatorNeeb, H.
dc.creatorNewbold, D.
dc.creatorNewsom, C.
dc.creatorPaul, S.
dc.creatorPochodzalla, J.
dc.creatorPotashnikova, I.
dc.creatorPovh, B.
dc.creatorRen, Z.
dc.creatorRey-Campagnolle, M.
dc.creatorRosner, G.
dc.creatorRossi, L.
dc.creatorRudolph, H.
dc.creatorScheel, C.
dc.creatorSchmitt, L.
dc.creatorSiebert, H. -W.
dc.creatorSimon, A.
dc.creatorSmith, V.
dc.creatorThilmann, O.
dc.creatorTrombini, A.
dc.creatorVesin, E.
dc.creatorVolkemer, B.
dc.creatorVorwalter, K.
dc.creatorWalcher, Th.
dc.creatorWälder, G.
dc.creatorWerding, R.
dc.creatorWittmann, E.
dc.creatorZavertyaev, M. V.
dc.date2007-02-27
dc.date.accessioned2026-07-07T11:22:02Z
dc.date.available2026-07-07T11:22:02Z
dc.descriptionWe report on the observation of a K$_s$p resonance signal at a mass of 1765$\pm$5 MeV/c$^2$, with intrinsic width $Γ= 108\pm 22$ MeV/c$^2$, produced inclusively in $Σ^-$-nucleus interactions at 340 GeV/c in the hyperon beam experiment WA89 at CERN. The signal was observed in the kinematic region $x_F>0.7$, in this region its production cross section rises approximately linearly with $(1-x_F)$, reaching $BR(X\to K_S p)\cdot dσ/dx_F = (5.2\pm 2.3) μb $ per nucleon at $x_F=0.8$. The hard \xf spectrum suggests the presence of a strong leading particle effect in the production and hence the identification as a $Σ^{*+}$ state. No corresponding peaks were observed in the $K^- p$ and $Λπ^{\pm}$ mass spectra.
dc.identifierhttps://arxiv.org/abs/hep-ex/0702044
dc.identifierhttp://arxiv.org/abs/hep-ex/0702044
dc.identifierEur.Phys.J.C50:535-538,2007
dc.identifierdoi:10.1140/epjc/s10052-007-0284-9
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/194436
dc.subjectHigh Energy Physics - Experiment
dc.titleObservation of a resonance in the K$_s$p decay channel at a mass of 1765 MeV/c$^2$
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