The p + p → π+ + d reaction close to threshold at COSY

Drochner, M.; Ernst, J.; Förtsch, S. V.; Freindl, L.; Frekers, D.; Garske, W.; Grewer, K.; Igel, S.; Jahn, R.; Jarczyk, L.; Kemmerling, G.; Kilian, K.; Kliczewski, S.; Klimala, W.; Kolev, D.; Kutsarova, T.; Lippert, G.; Machner, H.; Maier, R.; Nake, C.; Razen, B.; Rossen, P. von; Roy, Bikram; Scho, K.; Siudak, R.; Smyrski, J.; Strzalkowski, A.; Tsenov, R.; Zolnierczuk, Piotr; Zwoll, K.

doi:10.1016/s0375-9474(98)00547-8

Cited by 57 publications

(22 citation statements)

References 49 publications

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“…K þ þ ðÃpÞ has been performed by the HIRES Collaboration [1,2] using the proton beam of the cooler synchrotron COSY [3] and the magnetic spectrograph BIG KARL [4,5] at the Research Center Jülich. The aim of the experiment was to study the Ãp final state interaction (FSI) and to search for narrow strangeness S ¼ À1 resonances.…”

Section: Introductionmentioning

confidence: 99%

Upper limits for a narrow resonance in the reactionp+p→K++(Λp)

Budzanowski¹,

Chatterjee²,

Clement³

et al. 2011

Phys. Rev. D

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Section: Introductionmentioning

confidence: 99%

Upper limits for a narrow resonance in the reactionp+p→K++(Λp)

Budzanowski¹,

Chatterjee²,

Clement³

et al. 2011

Phys. Rev. D

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“…Some results of the Geant4 simulation were clearly deficient and we have supplemented them with experimental data in the highest E c bin: for elastic scattering of protons on all targets the Geant4 simulation underestimated the cross sections for E p ≤ 15 MeV and these have been replaced with results obtained from the EXFOR database [http://www-nds.iaea.org/exfor/exfor00.htm]; the reaction p + p → 2 H+ π + was not represented in the simulation and was added for 300 < E p < 3000 MeV [ Ramaty and Lingenfelter , 1969] assuming an isotropic secondary distribution, which is valid near the reaction threshold [ Drochner et al , 1998], and the reaction p + 4 He → 2 H+ 3 He, also not represented, was added for 40 < E p < 400 MeV [ Selesnick and Mewaldt , 1996]. In the cases of secondary 6 Li, 7 Li, and 7 Be the Geant4 results led to total cross sections that were significantly lower than experimental data [ Moskalenko and Mashnik , 2003], but they were used without supplementation because differential cross section data were not available; it is likely that the missing secondaries would be at low enough energy (in the LAB frame) so as not to contribute to the radiation belt model.…”

Section: Cross Sectionsmentioning

confidence: 99%

“…[22] Some results of the Geant4 simulation were clearly deficient and we have supplemented them with experimental data in the highest E c bin: for elastic scattering of protons on all targets the Geant4 simulation underestimated the cross sections for E p 15 MeV and these have been replaced with results obtained from the EXFOR database [http://www-nds.iaea.org/exfor/exfor00.htm]; the reaction p + p ! 2 H+ p + was not represented in the simulation and was added for 300 < E p < 3000 MeV [Ramaty and Lingenfelter, 1969] assuming an isotropic secondary distribution, which is valid near the reaction threshold [Drochner et al, 1998], and the reaction p + 4 He ! 2 H+ 3 He, also not represented, was added for 40 < E p < 400 MeV [Selesnick and Mewaldt, 1996].…”

Section: Cross Sectionsmentioning

confidence: 99%

A model of the secondary radiation belt

2008

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[1] Products of nuclear reactions between primary radiation belt protons and constituents of the tenuous upper atmosphere form a collocated secondary radiation belt. A calculation of the time-dependent secondary intensity provides a model specification of this environmental component for low-and medium-altitude satellite orbits. It is based on an earlier model of the radiation belt protons, the novel feature being a determination of the secondary source function from nuclear reaction cross sections. All long-lived secondary products are included, isotopes of H and He being dominant while the heavier Li to O isotopes are present at relatively low levels. Secondary protons are shown to be a minor correction to the primary radiation belt.

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“…The GEM collaboration studied isospin symmetry breaking by comparing neutral and charged pion production in pp → dπ + and np → dπ 0 [5] reactions, and pd → 3 Hπ + and pd → 3 Heπ 0 reactions [30]. For the latter reactions it was found that the angular distribution of the matrix elements consists of two parts.…”

Section: η-Meson Physics Symmetriesmentioning

confidence: 99%

“…The target area detectors are especially suited for the identification of delayed decays and TOF is thus a geometry detector. BIG KARL [5,6] is a focusing magnetic spectrograph of the 3Q2D-type. Particle tracks are measured in the focal plane area with packs od MWDC's followed by scintillator hodoscopes allowing for a time of flight path of 3.5 m. Additional detectors exist.…”

Section: Introductionmentioning

confidence: 99%