Total cross section of the reaction pp→ pK+Λ close to threshold

• Published in: Physics letters. B Vol. 420; no. 1; pp. 211 - 216
• Main Authors: Balewski, J.T, Budzanowski, A, Dombrowski, H, Eyrich, W, Goodman, C, Grzonka, D, Haidenbauer, J, Hanhart, C, Hauffe, J, Jarczyk, L, Jochmann, M, Khoukaz, A, Kilian, K, Köhler, M, Kozela, A, Lister, T, Metzger, A, Moskal, P, Oelert, W, Quentmeier, C, Santo, R, Schepers, G, Seddik, U, Sefzick, T, Smyrski, J, Sokołowski, M, Stinzing, F, Strzałkowski, A, Thomas, C, Wirth, S, Wolke, M, Woodward, R, Wüstner, P, Wyrwa, D
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 19-02-1998
• Subjects: Baryon-hyperon scattering length; Coulomb distortion corrections; Final state interaction; Strangeness production; Threshold measurement; Final state interaction; Strangeness production; Baryon-hyperon scattering length; Coulomb distortion corrections; 14.40.Aq; 14.20.Jn; Threshold measurement
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/S0370-2693(97)01527-X

The energy dependence of the total cross section for the
pp→
pK
+
Λ reaction was measured in the threshold region covering the excess energy range up to 7 MeV.
Existing model calculations describe the slope of the measured cross sections well, but are too low by a factor of two to three in rate.
The data were used for a precise determination of the beam momentum of the COSY-synchrotron.