High $p_T K^\pm / \pi^\pm$ Production in $p p$ Collisions at the {ISR}: Strangeness Suppression and Gluon Effects

The Ames-Bologna-CERN-Dortmund-Heidelberg-Warsaw collaboration Breakstone, A. ; Buchanan, C.D. ; Campanini, R. ; et al.
Phys.Lett.B 135 (1984) 510-514, 1984.
Inspire Record 193431 DOI 10.17182/hepdata.30589

The ratios of high p T charged kaon to pion production cross sections at √ s = 45 and 62 GeV are presented. The values of the K ± π ± ratios are essentially independent of both √ s and x T = 2p T √s and are compatible with a strangeness suppression factor λ = 0.55. By contrast, the K − π − values fall with x T suggesting a gluonic origin of K − . QCD calculations agrees with the measurements.

2 data tables

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Inclusive Production of Low Momentum Charged Pions, Kaons, and Protons at x=0 at the CERN Intersecting Storage Rings

The British-Scandinavian-MIT collaboration Guettler, K. ; Duff, B.G. ; Prentice, M.N. ; et al.
Nucl.Phys.B 116 (1976) 77-98, 1976.
Inspire Record 110113 DOI 10.17182/hepdata.35634

The inclusive production of low-momentum charged pions, kaons, and protons has been measured at x = 0 over the ISR energy range 23 < √ s < 63 GeV. The average increase in the invariant differential cross section is 36 ± 2% for π + , 41 ± 2% for π − , 52 ± 8% for K + , 69 ± 8% for K − , 8 ± 5% for p, and 84 ± for p ̄ . Pions have been measured in the range 0.04 < p T < 0.4 GeV/ c , kaons over 0.1 < p T < 0.3 GeV/ c , and nucleons over 0.1 < p T < 0.5 GeV/ c .

20 data tables

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