Energy dependence of φ meson production in central Pb+Pb collisions at √=6 to 17 GeV

@article{Alt2008EnergyDO,
  title={Energy dependence of $\phi$ meson production in central Pb+Pb collisions at √=6 to 17 GeV},
  author={C. Alt and T. Anti{\vc}i{\'c} and B. Baatar and D. Barna and J. Bartke and L. Betev and H. Białkowska and C. Blume and B. Boimska and M. Botje and J. Bracin{\'i}k and R. Bramm and P. Buncic and V. Cern{\'y} and P. Christakoglou and P. Chung and O. Chv{\'a}la and J. Cramer and P. Csat{\'o} and P. Dinkelaker and V. Eckardt and D. Flierl and Z. Fodor and P. Foka and V. Friese and J. G{\'a}l and M. Gaździcki and V. Genchev and G. Georgopoulos and E. Galadysz and K. Grebieszkow and S. Hegyi and C. Hoehne and K. Kadija and A. Karev and D. Kikola and M. Kliemant and S. Kniege and V. Kolesnikov and T. Kollegger and E. Kornaś and R. Korus and M. Kowalski and I. Kraus and M. Kreps and D. Kresan and A. L{\'a}szl{\'o} and R. Lacey and M. Leeuwen and P. L{\'e}vai and L. Litov and B. Lungwitz and M. Makariev and A. Malakhov and M. Mateev and G. Melkumov and A. Mischke and M. Mitrovski and J. Moln{\'a}r and S. Mr{\'o}wczyński and V. Nicolic and G. Palla and A. Panagiotou and D. Panayotov and A. Petridis and W. Peryt and M. Pikna and J. Pluta and D. Prindle and F. Puehlhofer and R. Renfordt and C. Roland and G. Roland and M. Rybczynski and A. Rybicki and A. Sandoval and N. Schmitz and T. Schuster and P. Seyboth and F. Sikler and B. Sitar and E. Skrzypczak and M. Slodkowski and G. Stefanek and R. Stock and C. Strabel and H. Stroebele and T. Susa and I. Szentp{\'e}tery and J. Sziklai and M. Szuba and P. Szymanski and V. Trubnikov and D. Varga and M. Vassiliou and G. Veres and G. Vesztergombi and D. Vrani{\'c} and A. Wetzler and Z. Walodarczyk and I. Yoo and J. Zimanyi},
  journal={Physical Review C},
  year={2008},
  volume={78},
  pages={044907}
}
φ meson production is studied by theNA49Collaboration in central Pb + Pb collisions at 20A, 30A, 40A, 80A, and 158A GeV beam energy. The data are compared with measurements at lower and higher energies and with microscopic and thermal models. The energy dependence of yields and spectral distributions is compatible with the assumption that partonic degrees of freedom set in at low SPS energies. 
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