Subthreshold Xi(-) Production in Collisions of p(3.5 GeV) + Nb

Publication Type
Journal Article
Year of Publication
2015
Authors
Agakishiev, G.
Arnold, O.
Balanda, A.
Belver, D.
Belyaev, A. V.
Berger-Chen, J. C.
Blanco, A.
Bhmer, M.
Boyard, J. L.
Cabanelas, P.
Chernenko, S.
Dybczak, A.
Epple, E.
Fabbietti, L.
Fateev, O. V.
Finocchiaro, P.
Fonte, P.
Friese, J.
Frohlich, I.
Galatyuk, T.
Garzon, J. A.
Gernhauser, R.
Gobel, K.
Golubeva, M.
Gonzalez-Diaz, D.
Guber, F.
Gumberidze, M.
Heinz, T.
Hennino, T.
Holzmann, R.
Ierusalimov, A.
Iori, I.
Ivashkin,A.
Jurkovic, M.
Kampfer, B.
Karavicheva, T.
Koenig, I.
Koenig, W.
Kolb, B. W.
Kornakov, G.
Kotte, R.
Krasa, A.
Krizek, F.
Krucken, R.
Kuc, H.
Kuhn, W.
Kugler, A.
Kurepin, A
Ladygin, V.
Lalik, R.
Lang, S.
Lapidus, K.
Lebedev, A.
Liu, T.
Lopes, L.
Lorenz, M.
Maier, L.
Mangiarotti, A.
Markert, J.
Metag, V.
Michalska, B.
Michel, J.
Muntz, C.
Muntzer, R.
Naumann, L.
Pachmayer, Y. C.
Palka, M.
Parpottas, Y.
Pechenov, V.
Pechenova, O.
Pietraszko, J.
Przygoda, W.
Ramstein, B.
Reshetin, A.
Rustamov, A.
Sadovsky, A.
Salabura, P.
Schmah, A.
Schwab, E.
Siebenson, J.
Sobolev, Y. G.
Spataro, S.
Spruck, B.
Strobele, H.
Stroth, J.
Sturm, C.
Tarantola, A.
Teilab, K.
Tlusty, P.
Traxler, M.
Trebacz, R.
Tsertos, H.
Vasiliev, T.
Wagner, V.
Weber, M.
Wendisch, C.
Wustenfeld, J.
Yurevich, S.
Zanevsky, Y. V.
Collaboration, Hades
Name of Publication
Physical Review Letters
Volume
114
Pagination
7
Issue
21
Date Published
May
Type of Article
Article
Short Title
Subthreshold Xi(-) Production in Collisions of p(3.5 GeV) + Nb
Accession Number
WOS:000355101300010
ISBN Number
0031-9007
Keywords
cascade, energies, heavy-ion collisions, hyperon production, lambda, model, nuclear-matter, pb-pb collisions, Physics, production, rapidity, tev
Abstract

Results on the production of the double strange cascade hyperon Xi(-) are reported for collisions of p(3.5 GeV) + Nb, studied with the High Acceptance Di-Electron Spectrometer (HADES) at SIS18 at GSI Helmholtzzentrum for Heavy-Ion Research, Darmstadt. For the first time, subthreshold Xi(-) production is observed in proton-nucleus interactions. Assuming a Xi(-) phase-space distribution similar to that of. hyperons, the production probability amounts to P Xi- = [2.0 +/- 0.4(stat) +/- 0.3(norm) +/- 0.6(syst)] x 10(-4) resulting in a Xi(-)/d(Lambda + Sigma(0)) ratio of P Xi-/P Lambda+Sigma 0 = [1.2 +/- 0.3(stat) +/- 0.4(syst)] x 10(-2). Available model predictions are significantly lower than the measured Xi(-) yield.


Source URL: https://phas.ubc.ca/subthreshold-xi-production-collisions-p35-gev-nb