Lambda-p femtoscopy in collisions of Ar+KCl at 1.76 AGeV
Creators: name: Agakishiev, G.
name: Balanda, A.
name: Bassini, R.
name: Belver, D.
name: Belyaev, A. V.
name: Blanco, A.
name: Böhmer, M.
name: Boyard, J. L.
name: Braun-Munzinger, P.
name: Cabanelas, P.
name: Castro, E.
name: Chernenko, S.
name: Christ, T.
name: Destefanis, M.
name: Díaz, J.
name: Dohrmann, F.
name: Dybczak, A.
name: Eberl, T.
name: Fabbietti, L.
name: Fateev, O. V.
name: Finocchiaro, P.
name: Fonte, P.
name: Friese, J.
name: Fröhlich, I.
name: Galatyuk, T.
name: Garzón, J. A.
name: Gernhäuser, R.
name: Gil, A.
name: Gilardi, C.
name: Golubeva, M.
name: González-Díaz, D.
name: Guber, F.
name: Hennino, T.
name: Holzmann, R.
name: Iori, I.
name: Ivashkin, A.
name: Jurkovic, M.
name: Kämpfer, B.
name: Kanaki, K.
name: Karavicheva, T.
name: Kirschner, D.
name: Koenig, I.
name: Koenig, W.
name: Kolb, B. W.
name: Kotte, R.
name: Krizek, F.
name: Krücken, R.
name: Kühn, W.
name: Kugler, A.
name: Kurepin, A.
name: Lang, S.
name: Lange, J. S.
name: Lapidus, K.
name: Liu, T.
name: Lopes, L.
name: Lorenz, M.
name: Maier, L.
name: Mangiarotti, A.
name: Markert, J.
name: Metag, V.
name: Michalska, B.
name: Michel, J.
name: Mishra, D.
name: Morinière, E.
name: Mousa, J.
name: Müntz, C.
name: Naumann, L.
name: Otwinowski, J.
name: Pachmayer, Y. C.
name: Palka, M.
name: Parpottas, Y.
name: Pechenov, V.
name: Pechenova, O.
name: Pietraszko, J.
name: Przygoda, W.
name: Ramstein, B.
name: Reshetin, A.
name: Roy-Stephan, M.
name: Rustamov, A.
name: Sadovsky, A.
name: Sailer, B.
name: Salabura, P.
name: Schmah, A.
name: Sobolev, Yu. G.
name: Spataro, S.
name: Spruck, B.
name: Ströbele, H.
name: Stroth, J.
name: Sturm, C.
name: Sudol, M.
name: Tarantola, A.
name: Teilab, K.
name: Tlusty, P.
name: Traxler, M.
name: Trebacz, R.
name: Tsertos, H.
name: Wagner, V.
name: Weber, M.
name: Wendisch, C.
name: Wisniowski, M.
name: Wojcik, T.
name: Wüstenfeld, J.
name: Yurevich, S.
name: Zanevsky, Y. V.
name: Zhou, P.
name: Zumbruch, P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: Results on $Λ$p femtoscopy are reported at the lowest energy so far. At a beam energy of 1.76A~GeV, the reaction Ar+KCl was studied with the High Acceptance Di-Electron Spectrometer (HADES) at SIS18/GSI. A high-statistics and high-purity $Λ$ sample was collected, allowing for the investigation of $Λ$ p correlations at small relative momenta. The experimental correlation function is compared to corresponding model calculations allowing the determination of the space-time extent of the $Λ$p emission source. The $Λ$p source radius is found slightly smaller than the pp correlation radius for a similar collis ion system. The present $Λ$p radius is significantly smaller than that found for Au+Au/Pb+Pb collisio ns in the AGS, SPS and RHIC energy domains, but larger than that observed for electroproduction from He. Taking into account all available data, we find the $Λ$p source radius to increase almost linearly with the number of participants to the power of one-third.
description: 5 pages, 3 figures, submitted to Phys. Rev. C