Direct reconstruction of

Bystrický, J.; Lechanoine‐Leluc, C.; Lehar, F.

doi:10.1007/s100520050231

Cited by 16 publications

(41 citation statements)

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“…Comparisons were made with the direct amplitude reconstruction (DAR) and partial-wave analysis (PWA) study of Ref. [2], which gave amplitudes to 2.7 GeV. In some cases, where the DAR allowed 2 distinct solutions, our energy-dependent and single-energy results were seen to follow different sets of DAR amplitudes.…”

Section: Introductionmentioning

confidence: 93%

“…Isovector phase shift parameters are given for the present energy-dependent and single-energy solutions, the energydependent SP00 solution, and single-energy Saclay analysis [2,29] in Fig. 5.…”

Section: The Fit To 3 Gevmentioning

confidence: 99%

“…The SP07 and SP00 [1] solutions are plotted as solid and dash-dotted curves, respectively. The GW single-energy solutions and those from Saclay [2,29] are given by filled and open circles, respectively. [6].…”

Section: Figmentioning

confidence: 99%

“…The SP07 (SP00 [1]) solution is plotted as a solid (dashed) curve. Saclay direct-reconstruction results [2] are shown as dash-dotted lines. The GW single-energy solution is given by a shaded band.…”

Section: Figmentioning

confidence: 99%

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Updated analysis ofNNelastic scattering to 3 GeV

et al. 2007

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Section: Introductionmentioning

confidence: 93%

Section: The Fit To 3 Gevmentioning

confidence: 99%

Section: Figmentioning

confidence: 99%

Section: Figmentioning

confidence: 99%

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Updated analysis ofNNelastic scattering to 3 GeV

et al. 2007

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“…The optical theorems always provide the absolute amplitudes, as discussed in [30,31,32]. Using the measured ∆σ(np) values and the existing ∆σ(pp) data at the same energy, one can deduce ∆σ L,T (I = 0) as…”

Section: Determination Of Observablesmentioning

confidence: 99%

Measurements of the total-cross-section difference Δσ L(np) at 1.39, 1.69, 1.89, and 1.99 GeV

et al. 2005

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New accurate results of the neutron-proton spin-dependent total cross-section difference Ds L np ( )at the neutron beam kinetic energies of 1.39, 1.69, 1.89 and 1.99 GeV are presented. In general these data complete the measurements of energy dependence of Ds L ( ) np over the Dubna Synchrophasotron energy region. The quasi-monochromatic neutron beam was produced by break-up of extracted polarized deuterons. The deuteron (and hence neutron) polarization direction was flipped every accelerator burst. The neutron vertical direction of polarization was rotated onto the neutron beam direction and longitudinally (L) polarized neutrons were transmitted through the large proton L-polarized target. The longitudinal target polarization direction was inverted after 1-2 days of measurements. Four different combinations of the beam and target parallel and antiparallel polarization directions, both oriented along the neutron beam momentum, were used at each energy. A fast decrease of -Ds L ( ) np with increasing energy above 1.1 GeV and a structure in the energy dependence around 1.8 GeV, first observed from our previous data, seem to be well revealed. The new results are also compared with model predictions and with phase shift analysis fits. The Ds L quantities for isosinglet state I =0, deduced from the measured Ds L ( ) np values and known Ds L ( ) pp data, are also given. The results of the measurements of unpolarized total cross sections s 0tot ( ) np at 1.3, 1.4 and 1.5 GeV and s 0tot ( ) nC at 1.4 and 1.5 GeV are presented as well. These data were obtained using the same apparatus and high intensity unpolarized deuteron beams extracted either from the Synchrophasotron, or from the Nuclotron.The investigation has been performed at the Veksler and Baldin Laboratory of High Energies, JINR. Ïðåäñòàâëåíû íîâûå òî÷íûå ðåçóëüòàòû èçìåðåíèé ñïèí-çàâèñèìîé ðàçíîñòè ïîëíûõ íåéòðîí-ïðîòîííûõ ñå÷åíèé Ds L ( ) np ïðè êèíåòè÷åñêèõ ýíåðãèÿõ íåéòðîíîâ 1,39; 1,69; 1,89 è 1,99 ÃýÂ. Â îñíîâíîì, ýòè äàííûå çàâåðøàþò èçìåðåíèÿ ýíåðãåòè÷åñêîé çàâèñèìîñòè Ds L ( ) np â îáëàñòè ýíåðãèé äóáíåíñêîãî ñèíõðîôàçîòðîíà. Ïî÷òè ìîíîõðîìàòè÷åñêèé íåé-òðîííûé ïó÷îê ïîëó÷àëñÿ ïðè ðàçâàëå âûâåäåííûõ èç ñèíõðîôàçîòðîíà âåêòîðíî-ïîëÿðèçî-âàííûõ äåéòðîíîâ. Çíàê ïîëÿðèçàöèè äåéòðîíîâ (à ñëåäîâàòåëüíî, è íåéòðîíîâ) ìåíÿëñÿ îò öèêëà ê öèêëó. Âåðòèêàëüíàÿ îðèåíòàöèÿ ïîëÿðèçàöèè íåéòðîíîâ ïîâîðà÷èâàëàñü ïî íàïðà-âëåíèþ íåéòðîííîãî ïó÷êà, è ïðîäîëüíî-ïîëÿðèçîâàííûå íåéòðîíû ïðîïóñêàëèñü ÷åðåç áîëü-øóþ ïðîäîëüíî-ïîëÿðèçîâàííóþ ïðîòîííóþ ìèøåíü. Íàïðàâëåíèå ïðîäîëüíîé ïîëÿðèçàöèè ìèøåíè èíâåðòèðîâàëîñü ñïóñòÿ 1-2 ñóò èçìåðåíèé. Áûñòðûé ñïàä -Ds L ( ) np ñ ðîñòîì ýíåðãèè âûøå 1,1 ÃýÂ è ñòðóêòóðà â ýíåðãåòè÷åñêîé çàâèñèìîñòè âîêðóã 1,8 ÃýÂ, âïåðâûå íàáëþäåí-íûå â áîëåå ðàííèõ èçìåðåíèÿõ, êàaeóòñÿ ÿâíî âûðàaeåííûìè. Íîâûå äàííûå ñðàâíèâàþòñÿ ñ ìîäåëüíûìè ïðåäñêàçàíèÿìè è ñ ðåøåíèÿìè ôàçîâîãî àíàëèçà. Ïðèâîäÿòñÿ çíà÷åíèÿ Ds L äëÿ èçîñèíãëåòíîãî ñîñòîÿíèÿ I =0, ïîëó÷åííûå èç èçìåðåííûõ Ds L ( ) np -âåëè÷èí è èçâåñòíûõ Ds L ( ) pp -äàííûõ. Ïðåäñòàâëåíû òàêaeå ðåçóëüòàò...

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