M. Hoffmann
University of Freiburg
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by M. Hoffmann.
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
Nuclear Physics | 1991
H. Ströbele; J. Baechler; 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; M. Fuchs; M. Gazdzicki; H.J. Gebauer; E. Gladysz; C. Guerra; J. W. Harris; W. Heck; M. Hoffmann; T. J. Humanic; S. Kabana; K. Kadija; A. Karabarbounis; R. Keidel; J. Kosiec; M. Kowalski; A. Kühmichel
\Lambda ,\bar \Lambda ,K_S^0 ,K^ +
Nuclear Physics | 1992
P. Seyboth; J. Seyerlein; R. Brockmann; M. Hoffmann; E. Gladysz; B. Fleischmann; F. Pühlhofer; G. Paić; P. Stefański; Y. Lee; O. Hansen; Peter Martin Jacobs; N. Schmitz; D. Röhrich; J. Cramer; M. Lahanas; M. A. Bloomer; R. Renfordt; P. Spinelli; J. Eschke; M. Kowalski; K. Runge; G. Vassiliadis; P. Buncic; E. E. Schmidt; M. J. LeVine; J. Bartke; A. M. Poskanzer; S. Tonse; John William Harris
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
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 | 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
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.
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 Rapidity spectra of pions and participant protons in S + S collisions at 200 GeV/nucleon are compared with N + N data. The average energy loss of the participating nucleons increases by 23% and is balanced by the energy of the final state particles, through a twofold increase of strange particle production and a similar enhancement, assumed for baryon-antibaryon pairs.
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 Enhanced strange particle production, nonstatistical multiplicity fluctuations and two-pion Bose-Einstein correlations were measured in O, S-nucleus reactions at 60 and 200 GeV/nucleon. The results indicate significant collective effects in high-energy nucleus-nucleus collisions.
Nuclear Physics | 1992
D. Ferenc; J. Baechler; J. Bartke; H. Bialkowska; M. A. Bloomer; R. Rock; R. Brockmann; P. Buncic; S.I. Chase; J. G. Cramer; I. Derado; V. Eckardt; J. Eschke; C. Favuzzi; B. Fleischmann; P. Foka; M. Fuchs; M. Gazdzicki; E. Gladysz; John William Harris; W. Heck; M. Hoffmann; Peter Martin Jacobs; K. Kadija; S. Kabana; A. Karabarbounis; R. Keidel; J. Kosiec; M. Kowalski; A. Kühmichel
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.
European Physical Journal C | 1993
J. Bächler; J. Bartke; H. Bialkowska; R. Bock; R. Brockmann; P. Buncic; S.I. Chase; I. Derado; V. Eckardt; J. Eschke; D. Ferenc; B. Fleischmann; M. Fuchs; M. Gaździcki; H.J. Gebauer; E. Gladysz; John William Harris; W. Heck; M. Hoffmann; S. Kabana; K. Kadija; R. Keidel; J. Kosiec; M. Kowalski; A. Kühmichel; M. Lahanas; Y. Lee; M. Le Vine; A. LjubicicJr.; S. Margetis
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
