Inclusive cross section ratios in highp T proton-proton scattering at ISR energies
Zeitschrift für Physik C Particles and Fields(1987)
摘要
Ratios of inclusive cross sections σ(π+)/σ(π++K++p) and
were measured for proton-proton interactions with a highpT hadron in the final state around c.m.s. scattering angles θ≅20°, 20° and 45° at two ISR energies
Gev and 62 GeV. Results are shown as functions of transverse and longitudinal momentum and are compared with parton model predictions. The different dependences of positive and negative pion fractions atpT≅2–3 GeV/c on longitudinal momenta is similar to that observed in soft hadronic interactions at low values ofpT where the leading proton effect (diquark fragmentation) is known to contribute. The quantitative agreement of the data with diquark model predictions indicates the presence of diquark fragmentation also in highpT jets.
更多![$$\sigma (\pi ^ - )/\sigma (\pi ^ - + K^ - + \bar p)$$](/fulltext-image.asp?format=htmlnonpaginated&src=N81580000G234122_html\10052_2005_Article_BF01408444_TeX2GIFIE1.gif)
![$$\sqrt s = 31$$](/fulltext-image.asp?format=htmlnonpaginated&src=N81580000G234122_html\10052_2005_Article_BF01408444_TeX2GIFIE2.gif)
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关键词
Field Theory, Model Prediction, Elementary Particle, Quantum Field Theory, Particle Acceleration
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