Kaon pair production close to threshold
- Winter, P.
- Wolke, M.
- Adam, H.-H.
- Budzanowski, A.
- Czyżykiewicz, R.
- Grzonka, D.
- Janusz, M.
- Jarczyk, L.
- Kamys, B.
- Khoukaz, A.
- Kilian, K.
- Klaja, P.
- Moskal, P.
- Oelert, W.
- Piskor-Ignatowicz, C.
- Przerwa, J.
- Ritman, J.
- Rożek, T.
- Sefzick, T.
- Siemaszko, M.
- Smyrski, J.
- Täschner, A.
- Wüstner, P.
- Zhang, Z.
- Zipper, W.
DOIAbstract
AbstractThe total cross section of the reaction pp→ppK+K− has been measured at excess energies Q=10 MeV and 28 MeV with the magnetic spectrometer COSY-11. The new data show a significant enhancement of the total cross section compared to pure phase space expectations or calculations within a one boson exchange model. In addition, we present invariant mass spectra of two particle subsystems. While the K+K− system is rather constant for different invariant masses, there is an enhancement in the pK− system towards lower masses which could at least be partially connected to the influence of the Λ(1405) resonance
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