Summary
The eikonal model for high-energy pp scattering is extended to include spin effects. The single scattering corresponds to the exchange of a flat Pomeranchukon and two (degenerate) secondary trajectories. A very simple parametrization with five arbitrary parameters is chosen. We obtain a good description of the pp data on total and differential cross-sections. the ratio of real to imaginary part of the amplitude at t = 0 and polarizations. for incident momenta between 5 and 20 GeV/c. Predictions for the\(p\bar p\) high-energy scattering, are made. They are in reasonable agreement with the experimental data and exhibit the cross over effect near the right value of the momentum transfer. Some general features of the cikonal model are also discussed.
Riassunto
Si estende il modello eiconale per includere gli effetti dello spin nello scattering pp di alta energia. Lo scattering singolo corrisponde allo scambio di un pomeranchukone piano e due traiettorie secondarie (degeneri). Si sceglie una parametrizzazione semplice con cinque parametri arbitrari. Si ottiene una buona descrizione dei dati pp sulle sezioni d’urto totale e differenziale. il rapporto della parte reale con quella immaginaria dell’ampiezza per t = 0 e Ie polarizzazioni. per impulsi incidenti fra 5 e 20 GeV/c. Si fanno delle previsioni per lo scattering\(p\bar p\) di alta energia. Vi è un ragionevole accordo con i dati sperimentali e si manifesta un effetto di incrocio presso il giusto valore del momento trasferito. Si discutono anelw aleune caratteristiche generali del modello eiconale.
Резме
Моделъ эйконала ддл р р рассеяния нри высок нх энергиях раснрост-раняется, чтобы включ нгъ сниновые эффекты. Отдслъное рассеяние соответствует обмену нлоским Помер анчуконом и двумя (выр ожденнымз) вторзчным н траекто-рнями. Выбнрается оое нъ нростая нараметрн зання с нягъю нроззво лънымз пара-метрамз. Мы нолучаем х ороншее опзсанне рр д аннъъх для нолного з д зфферен-цзалъного нонеречнъ гх сеченин, отношения венЩественной частз амнлигуды к мнимой прз t=0 з ноляризаннз дз начального нмнулъса от 5 до 20 ГэВ/сс. Делается нред-сказанзс о\(p\bar p\) рассеяни и нрз высоких энергзя х. Эгз нредсказанзя на ходятся в разумном согласнн с э кснерзменталънымн д аннын и обнаруживают эффект нере-сечения вблззз нрави льного значензя нсре даваемого змпульса. Т акже обсуждаются некоторые обнщзе осо бенности моделн эйко нала
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Also staff member of the Laboratoire de Physique. Ecole Polytechnique, Paris.
An erratum to this article is available at http://dx.doi.org/10.1007/BF02824799.
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Capella, A., Kaplax, J., Krzywicki, A. et al. High-energy proton-proton scattering III the eikonal model. Nuovo Cimento A (1965-1970) 63, 141–161 (1969). https://doi.org/10.1007/BF02963162
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DOI: https://doi.org/10.1007/BF02963162