Energy dependence of forward 1S0 diproton production in the pp -> pp pi0 reaction

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dc.creatorKurbatov, V.
dc.creatorBuescher, M.
dc.creatorDymov, S.
dc.creatorGusev, D.
dc.creatorHartmann, M.
dc.creatorKacharava, A.
dc.creatorKhoukaz, A.
dc.creatorKomarov, V.
dc.creatorKulikov, A.
dc.creatorMacharashvili, G.
dc.creatorMersmann, T.
dc.creatorMerzliakov, S.
dc.creatorMikirtytchiants, S.
dc.creatorPrasuhn, D.
dc.creatorRathmann, F.
dc.creatorSchleichert, R.
dc.creatorStroeher, H.
dc.creatorTsirkov, D.
dc.creatorUzikov, Y.
dc.creatorWilkin, C.
dc.creatorYaschenko, S.
dc.date2007-12-07
dc.date.accessioned2026-07-07T11:54:34Z
dc.date.available2026-07-07T11:54:34Z
dc.descriptionThe pp -> {pp}_s pi0 differential cross section has been measured with the ANKE spectrometer at COSY-Juelich for seven proton beam energies T_p between 0.5 and 1.97 GeV. By selecting proton pairs with an excitation energy of less than 3 MeV it is ensured that the final {pp}_s system is in the 1S0 state. In the measured region of theta_{pp}^{cm} < 18 deg, the data reveal a forward dip for T_p =< 1.4 GeV whereas a forward peaking is seen at 1.97 GeV. The energy dependence of the forward cross section shows a broad peak in the 0.6-0.8 GeV region, probably associated with Delta(1232) excitation, and a minimum at 1.4 GeV. Some of these features are similar to those observed for the spin-isospin partner reaction, pp -> d pi+. However, the ratio of the forward differential cross sections of the two reactions shows a significant suppression of single pion production associated with a spin--singlet final nucleon pair.
dc.description12 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0712.1186
dc.identifierhttp://arxiv.org/abs/0712.1186
dc.identifierPhys.Lett.B661:22-27,2008
dc.identifierdoi:10.1016/j.physletb.2008.01.051
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204949
dc.subjectNuclear Experiment
dc.titleEnergy dependence of forward 1S0 diproton production in the pp -> pp pi0 reaction
dc.typetext

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