G. Vasileiadis
National and Kapodistrian University of Athens
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by G. Vasileiadis.
European Physical Journal C | 1994
T. Alber; H. Appelshäuser; J. Bächler; J. Bartke; H. Bialkowska; M. A. Bloomer; R. Bock; W.J. Braithwaite; D. Brinkmann; R. Brockmann; P. Buncic; P. Chan; S.I. Chase; J. G. Cramer; P.B. Cramer; I. Derado; V. Eckardt; J. Eschke; C. Favuzzi; D. Ferenc; B. Fleischmann; P. Foka; M. Fuchs; M. Gaździcki; E. Gladysz; J. Gunther; John William Harris; M. Hoffmann; P. Jacobs; S. Kabana
AbstractMultiplicities and spectra of strange particles (
Nuclear Physics | 1995
M. Gaździcki; T. Alber; H. Appelshäuser; J. Bächler; J. Bartke; H. Bialkowska; M. A. Bloomer; R. Bock; W.J. Braithwaite; D. Brinkmann; R. Brockmann; P. Buncic; P. Chan; J. G. Cramer; P.B. Cramer; I. Derado; V. Eckardt; J. Eschke; C. Favuzzi; D. Ferenc; B. Fleischmann; P. Foka; M. Fuchs; E. Gladysz; J. Gunther; John William Harris; M. Hoffmann; P. Jacobs; S. Kabana; K. Kadija
Physics Letters B | 1996
T. Alber; H. Appelshäuser; J. Bächler; J. Bartke; H. Bialkowska; M. A. Bloomer; R. Bock; W.J. Braithwaite; D. Brinkmann; R. Brockmann; P. Buncic; P. Chan; J. G. Cramer; P.B. Cramer; I. Derado; V. Eckardt; J. Eschke; C. Favuzzi; D. Ferenc; B. Fleischmann; P. Foka; P. Freund; M. Fuchs; M. Gaździcki; E. Gladysz; J. Grebieszkow; J. Gunther; John William Harris; M. Hoffmann; P. Jacobs
\Lambda ,\bar \Lambda ,K_S^0 ,K^ +
European Physical Journal C | 1995
T. Alber; J. Bächler; J. Bartke; H. Bialkowska; M. A. Bloomer; R. Bock; W.J. Braithwaite; D. Brinkmann; R. Brockmann; P. Buncic; P. Chan; S.I. Chase; P.B. Cramer; J. G. Cramer; I. Derado; V. Eckardt; J. Eschke; C. Favuzzi; D. Ferenc; B. Fleischmann; P. Foka; P. Freund; M. Fuchs; M. Gaździcki; E. Gladysz; John William Harris; M. Hoffmann; Peter Martin Jacobs; S. Kabana; K. Kadija
European Physical Journal C | 1991
J. Bächler; J. Bartke; H. Bialkowska; R. Bock; R. Brockmann; P. Buncic; S.I. Chase; I. Derado; V. Eckardt; J. Eschke; C. Favuzzi; D. Ferenc; B. Fleischmann; P. Foka; M. Fuchs; M. Gazdzicki; H.J. Gebauer; E. Gladysz; C. Guerra; John William Harris; W. Heck; M. Hoffmann; T. J. Humanic; S. Kabana; K. Kadija; A. Karabarbounis; R. Keidel; J. Kosiec; M. Kowalski; A. Kühmichel
andK− produced in central32S+S,32S+Ag and32S+Au collisions at 200 GeV per nucleon are presented and compared with data on strange particle production in protonnucleus and nucleon-nucleon interactions. It is shown that strangeness production in32S+Ag collisions is enhanced by a factor of two, similar to that found previously in central32S+S collisions.
European Physical Journal C | 1991
J. Bächler; J. Bartke; H. Bialkowska; R. Bock; R. Brockmann; P. Buncic; S.I. Chase; I. Derado; V. Eckardt; J. Eschke; C. Favuzzi; D. Ferenc; B. Fleischmann; P. Foka; M. Fuchs; M. Gazdzicki; H.J. Gebauer; E. Gladysz; C. Guerra; John William Harris; W. Heck; M. Hoffmann; T. J. Humanic; S. Kabana; K. Kadija; A. Karabarbounis; R. Keidel; J. Kosiec; M. Kowalski; A. Kühmichel
Abstract Recent results on hadron production in central nucleus-nucleus collisions obtained by the experiment NA35 at the CERN SPS are reviewed. The first preliminary results on central Pb+Pb collisions obtained by the NA49 experiment, the successor of NA35, are also discussed. Their impact on our understanding of the properties of strongly interacting matter at different stages of the collision is underlined.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1990
G. Vasileiadis; R. Bouclier; W. Dominik; A. Gougas; A. Ljubičić; M. Mongelli; E. Nappi; G. Paić; A. Petridis; A. Sandoval; E. Schmoetten; D. Vranić; N. Zaganidis
Abstract Antiproton production near midrapidity has been studied in central collisions of 32 S with sulphur, silver and gold nuclei at 200 GeV per nucleon. The measured transverse mass distributions can be described by an exponential with inverse slope parameters of about 200 MeV, similar to those obtained from Λ spectra. The rapidity density increases weakly with the target mass, ranging from 0.4 to 0.7. The ratio Λ p near midrapidity is approximately 1.4 on average, significantly larger than the corresponding ratio observed in proton-proton and proton-nucleus collisions.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1994
J. Baechler; P. Buncic; R. Bock; A. Di Mauro; W. Heck; M. Hoffmann; M. Le Vine; A. Ljubicic; E. Nappi; G. Paić; A. Panagiotou; F. Posa; G. Roland; K. Runge; A. Sandoval; T. Scognetti; E. Schmoetten; R. Stock; G. Tomasicchio; G. Vasileiadis; D. Vranic
Results of a pion interferometry analysis are presented for the reactions S+C, S+S, S+Cu, S+Ag, S+Au and O+Au at 200 GeV per nucleon. Correlation functions were measured for pairs of negative pions in narrow windows of transverse momentum and rapidity, as a function of the three components of the momentum difference vector in cylindrical coordinates. The measured two-pion correlation functions suggest a space-time evolution of the system which proceeds in the following way for central nucleus-nucleus collisions. After interpenetration of the incident nuclei, the pion source expands in a boost invariant way along the collision axis. Estimates for the proper time interval between the onset of expansion and pion decoupling, as well as for the duration of pion emission are ∼ 4 fm/c and <2 fm/c, respectively. ThekT dependence observed forRS is consistent with the effect of resonance decays, alone or combined with slow transverse expansion. A linear dependence of the decoupling volume on the multiplicity is observed and indicates pion decoupling at a constant particle density. Presently available model predictions are briefly discussed
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1993
J. Baechler; M. Bosteels; P. Buncic; R. Bock; A. Di Mauro; J.P. Fabre; N. Facchini; R. Ferorelli; W. Heck; M. Hoffmann; M. Koncul; M. LeVine; A. Ljubicic; E. Nappi; G. Paić; A. Panagiotou; F. Posa; G. Roland; K. Runge; A. Sandoval; T. Scognetti; E. Schmoetten; R. Stock; G. Tomasicchio; G. Vasileiadis; D. Vranic; M. Wensveen
We report on a systematic study of midrapidity transverse energy production and forward energy flow in interactions of16O and32S projectiles with S, Cu, Ag and Au targets at 60 and 200 GeV/nucleon. The variation of the shape of theET distributions with target and projectile mass can be understood from collision geometry. AverageET values determined for central collisions show an increasing stopping power for heavier target nuclei. A higher relative stopping is observed at 60 GeV/nucleon than at 200 GeV/nucleon. Bjorken estimates of the energy density reach approximately 3 GeV/fm3 in highET events at 200 GeV/nucleon with16O and32S projectiles. The systematics of the data and the shapes ofET and pseudorapidity distributions are well described by the Lund model Fritiof.
European Physical Journal A | 1997
T. Alber; S. Wenig; J. Seyerlein; R. Brockmann; T. A. Trainor; M. Hoffmann; E. Gladysz; J. G. Cramer; F. Pühlhofer; P.B. Cramer; J. Guenther; V. Eckardt; G. Roland; P. Jacobs; D. Roehrich; N. Schmitz; Bloomer; M. Lahanas; G. Vasileiadis; R. Renfordt; J. Eschke; M. Kowalski; K. Runge; P. Chan; B. Fleischmann; J. Bartke; A. M. Poskanzer; S. Tonse; John William Harris; K. Kadija
Data on multiplicities of charged particles produced in proton-nucleus and nucleus-nucleus collisions at 200 GeV per nucleon are presented. It is shown that the mean multiplicity of negative particles is proportional to the mean number of nucleons participating in the collision both for nucleus-nucleus and proton-nucleus collisions. The apparent consistency of pion multiplicity data with the assumption of an incoherent superposition of nucleon-nucleon collisions is critically discussed.
