학술논문
Cross section of the $pp\to K^+\Sigma^+n$ reaction close to threshold
Document Type
Working Paper
Author
Budzanowski, A.; Chatterjee, A.; Clement, H.; Dorochkevitch, E.; Hawranek, P.; Hinterberger, F.; Jahn, R.; Joosten, R.; Kilian, K.; Kliczewski, S.; Kirillov, Da.; Kirillov, Di.; Kolev, D.; Kravcikova, M.; Lesiak, M.; Magiera, A.; Machner, H.; Martinska, G.; Piskunov, N.; Protic, D.; Ritman, J.; von Rossen, P.; Sibirtsev, A.; Sitnik, I.; Siudak, R.; Tsenov, R.; Ulbrich, K.; Urban, J.; Wagner, G. J.
Source
Phys.Lett.B692:10-14,2010
Subject
Language
Abstract
We have measured inclusive data on $K^+$-meson production in $pp$ collisions at COSY J\"ulich close to the hyperon production threshold and determined the hyperon-nucleon invariant mass spectra. The spectra were decomposed into three parts: $\Lambda p$, $\Sigma^0p$ and $\Sigma^+n$. The cross section for the $\Sigma^+n$ 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.
Comment: accepted by Phys. lett. B some typos corrected
Comment: accepted by Phys. lett. B some typos corrected