Počet záznamů: 1  

Elliptic flow of .eta. and ă.sub.o mesons in heavy-ion collisions at 2 A GeV

  1. 1.
    0185229 - UJF-V 20010403 RIV CZ eng J - Článek v odborném periodiku
    Taranenko, Arkadij - Kugler, Andrej - Marín, A. - Díaz, J. - Averbeck, R. - Doppenschmidt, A. - Hlaváč, S. - Holzmann, R. - Lefévre, F. - Schubert, A. - Simon, R. S. - Charbonnier, Y. - Martínez, G. - Schutz, Y. - Marqués, F. M. - Appenheimer, H. - Berg, F. D. - Metag, V. - Novotny, R. - Stroher, H. - Weiss, J. - Wolf, A. R. - Wolf, H. - Löhner, H. - Ostendorf, R. W. - Vogt, P. - Wilschut, H. W. - Baiborodin, Dmitri - Pleskač, Radek - Tlustý, Pavel - Wagner, Vladimír
    Elliptic flow of .eta. and ă.sub.o mesons in heavy-ion collisions at 2 A GeV.
    Czechoslovak Journal of Physics. Roč. 50, - (2000), s. 139-166. ISSN 0011-4626.
    [TAPS Workshop /5./ "Electromagnetic and Mesonic Probes of Nuclear Matter". Prague, 04.09.1999-08.09.1999]
    Výzkumný záměr: CEZ:AV0Z1048901
    Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
    Impakt faktor: 0.298, rok: 2000

    Azimuthal distributions of both .eta. and pí.sub.o mesons emitted at midrapidity are studied in collisions of 1.9 A GeV.sub.58 Ni+.sub.58 Ni and 2 A GeV .sub.40 Ca+.sub.nat. CA.The observed anisotropy corresponds to a negative elliptic flow signal for .eta.mesons, indicating a preferred emissionperpendicular to the reaction plane. In contrast, only smallazimuthal anisotropies are observed for .pí.sub.octivity. In analyzing resulting data, it was established that theabove nuclei are produced in the fragmentation process andthat the reaction cross section is a power-law function ofthe mass and charge numbers of fragmentation products. A strong dependence of the reaction cross section on the nucleonic composition of the targets and of the products is observed. The measured cross sections, together with data available in the literature, are discussed within various assumptions.
    Trvalý link: http://hdl.handle.net/11104/0002063

     
     

Počet záznamů: 1  

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