Počet záznamů: 1

Lambda-p femtoscopy in collisions of Ar + KCl at 1.76AGeV

  1. 1.
    0347537 - UJF-V 2011 RIV US eng J - Článek v odborném periodiku
    Agakishiev, G. - Balanda, A. - Bassini, R. - Belver, D. - Belyaev, A. V. - Blanco, A. - Böhmer, M. - Boyard, J. L. - Braun-Munzinger, P. - Cabanelas, P. - Castro, E. - Chernenko, S. - Christ, T. - Destefanis, M. - Díaz, J. - Dohrmann, F. - Dybczak, A. - Eberl, T. - Fabbietti, L. - Fateev, O.V. - Finocchiaro, P. - Fonte, P. - Friese, J. - Frohlich, I. - Galatyuk, T. - Garzón, J.A. - Gernhäuser, R. - Gil, A. - Gilardi, C. - Golubeva, M. - Gonzalez-Diaz, D. - Guber, F. - Hennino, T. - Holzmann, R. - Iori, I. - Ivashkin, A. - Jurkovic, M. - Kampfer, P. - Kanaki, K. - Karavicheva, T. - Kirschner, D. - Koenig, I. - Koenig, W. - Kolb, B.W. - Kotte, R. - Křížek, Filip - Krücken, R. - Kuhn, W. - Kugler, Andrej - Kurepin, A. - Lang, S. - Lange, J.S. - Lapidus, K. - Liu, T. - Lopes, L. - Lorenz, M. - Maier, L. - Mangiarotti, A. - Markert, J. - Metag, V. - Michalska, B. - Michel, J. - Mishra, D. - Moriniére, E. - Mousa, J. - Muntz, C. - Naumann, L. - Otwinowski, J. - Pachmayer, Y.C. - Palka, M. - Parpottas, Y. - Pechenov, V. - Pechenova, O. - Pietraszko, J. - Przygoda, W. - Ramstein, B. - Reshetin, A. - Roy-Stephan, M. - Rustamov, A. - Sadovsky, A. - Sailer, B. - Salabura, P. - Schmah, A. - Sobolev, Yuri, G. - Spataro, S. - Spruck, B. - Strobele, H. - Stroth, J. - Sudol, M. - Tarantola, A. - Teilab, K. - Tlustý, Pavel - Traxler, M. - Trebacz, R. - Tsertos, H. - Wagner, Vladimír - Weber, M. - Wendisch, C. - Wisniowski, M. - Wojcik, T. - Wuestenfeld, J. - Yurevich, S. - Zanevsky, Y.V. - Zhou, P. - Zumbruch, P.
    Lambda-p femtoscopy in collisions of Ar + KCl at 1.76AGeV.
    Physical Review. C. Roč. 82, č. 2 (2010), 021901/1-021901/5 ISSN 0556-2813
    Grant CEP: GA MŠk LC07050; GA AV ČR IAA100480803
    Výzkumný záměr: CEZ:AV0Z10480505
    Klíčová slova: HEAVY-ION COLLISIONS * SOURCE-SIZE MEASUREMENTS * FINAL-STATE INTERACTION
    Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
    Impakt faktor: 3.416, rok: 2010

    Results on Lambda p femtoscopy are reported at the lowest energy so far. At a beam energy of 1.76AGeV, the reaction Ar + KCl was studied with the High Acceptance Di-Electron Spectrometer ( HADES) at SIS18/GSI. A high-statistics and high-purity Lambda sample was collected, allowing for the investigation of Lambda p correlations at low relative momenta. The experimental correlation function is compared to corresponding model calculations allowing the determination of the space-time extent of the Lambda p emission source. The Lambda p source radius is found to be slightly smaller than the pp correlation radius for a similar collision system. The present Lambda p radius is significantly smaller than that found for Au + Au/Pb + Pb collisions 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 Lambda p source radius to increase almost linearly with the number of participants to the power of one-third.
    Trvalý link: http://hdl.handle.net/11104/0188299