Anomaly in the K-S(0)Sigma(+) photoproduction cross section off the proton at the K* threshold
- Ewald, R.
- Bantes, B.
- Bartholomy, O.
- Bayadilov, D.
- Beck, R.
- Beloglazov, Y. A.
- Brinkmann, K. -T.
- Crede, V.
- Dutz, H.
- Elsner, D.
- Fornet-Ponse, K.
- Frommberger, F.
- Funke, Ch
- Gridnev, A. B.
- Gutz, E.
- Hillert, W.
- Hannappel, J.
- Hoffmeister, P.
- Jaegle, I.
- Jahn, O.
- Jude, T.
- Junkersfeld, J.
- Kalinowsky, H.
- Kammer, S.
- Kleber, V.
- Klein, Frank
- Klein, Friedrich
- Klempt, E.
- Krusche, B.
- Lang, M.
- Löhner, H.
- Lopatin, I. V.
- Menze, D.
- Mertens, T.
- Messchendorp, J. G.
- Metag, V.
- Nanova, M.
- Novinski, D.
- Novotny, R.
- Ostrick, M.
- Pant, L.
- van Pee, H.
- Roy, A.
- Schadmand, S.
- Schmidt, C.
- Schmieden, H.
- Schoch, B.
- Shende, S.
- Sokhoyan, V.
- Suele, A.
- Sumachev, V. V.
- Szczepanek, T.
- Thoma, U.
- Trnka, D.
- Varma, R.
- Walther, D.
- Wendel, Ch
DOIAbstract
The gamma + p -> K-0 + Sigma(+) photoproduction reaction is investigated in the energy region from threshold to E gamma = 2250 MeV. The differential cross section exhibits increasing forward-peaking with energy, but only up to the K* threshold. Beyond, it suddenly returns to a flat distribution with the forward cross section dropping by a factor of four. In the total cross section a pronounced structure is observed between the K*Lambda and K*Sigma thresholds. (C) 2012 Published by Elsevier B.V.</p
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