BARC/PUB/10//0833

  
 

Cross sections of the pp ® K+ S+n reaction close to threshold

  
     
 
Author(s)

Budzanowski, A.; Chatterjee, A.; Clement, H.; Dorochkevitch, E.; Hawranek, P.; Hinterberger, F.; Jahn, R.; Joosten, R.; Kilian, K.; Kliczewski, S.; Kirillov, D.; Kirillov, D.; Kolev, D.; Kravcikova, M.; Lesiak, M.; Machner, H.; Magiera, A.; Martinska, G.; Piskunov, N.; Protic, D.; Ritman, J.; von, Rossen, P.; Roy, B. J.; Sibirtsev, A.; Sitnik, I.; Siudak, R.; Tsenov, R.; Ulbrich, K.; Urban, J.; Wagner, G. J.

ABSTRACT

We have measured inclusive data on K+-meson production in pp collisions at COSY Jülich close to the hyperon production threshold and determined the hyperon-nucleon invariant mass spectra. The spectra were decomposed into three parts: Ùp, S0p and S+n. The cross section for the S+n channel was found to be much smaller than a previous measurement in that excess energy region. The data together with previous results at higher energies are compatible with a phase space dependence.

 
 
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