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Search for the QCD critical point in nuclear collisions at the CERN SPS
Pion production in nuclear collisions at the SPS is investigated with the aim to search, in a restricted domain of the phase diagram, for power-laws in the behaviour of correlations which are compatible with critical QCD. We have analysed interactions of nuclei of different size (p+p, C+C, Si+Si, Pb...
| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2009
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevC.81.064907 http://cds.cern.ch/record/1230242 |
| _version_ | 1780918468613242880 |
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| author | Anticic, T. Baatar, B. Barna, D. Bartke, J. Betev, L. Bialkowska, H. Blume, C. Boimska, B. Botje, M. Bracinik, J. Buncic, P. Cerny, V. Christakoglou, P. Chung, P. Chvala, O. Cramer, J.G. Dinkelaker, P. Eckardt, V. Fodor, Z. Foka, P. Friese, V. Gazdzicki, M. Genchev, V. Grebieszkow, K. Hohne, C. Kadija, K. Karev, A. Kolesnikov, V.I. Kowalski, M. Kreps, M. Laszlo, A. Lacey, R. van Leeuwen, M. Lungwitz, B. Makariev, M. Malakhov, A.I. Mateev, M. Melkumov, G.L. Mitrovski, M. Mrowczynski, St. Nicolic, V. Palla, G. Panagiotou, A.D. Petridis, A. Peryt, W. Pikna, M. Pluta, J. Prindle, D. Puhlhofer, F. Renfordt, R. Roland, C. Roland, G. Rybczynski, M. Rybicki, A. Sandoval, A. Schmitz, N. Schuster, T. Seyboth, P. Sikler, F. Sitar, B. Skrzypczak, E. Slodkowski, M. Stefanek, G. Stock, R. Strobele, H. Susa, T. Szuba, M. Varga, D. Vassiliou, M. Veres, G.I. Vesztergombi, G. Vranic, D. Wlodarczyk, Z. Antoniou, N.G. Diakonos, F.K. Mavromanolakis, G. |
| author_facet | Anticic, T. Baatar, B. Barna, D. Bartke, J. Betev, L. Bialkowska, H. Blume, C. Boimska, B. Botje, M. Bracinik, J. Buncic, P. Cerny, V. Christakoglou, P. Chung, P. Chvala, O. Cramer, J.G. Dinkelaker, P. Eckardt, V. Fodor, Z. Foka, P. Friese, V. Gazdzicki, M. Genchev, V. Grebieszkow, K. Hohne, C. Kadija, K. Karev, A. Kolesnikov, V.I. Kowalski, M. Kreps, M. Laszlo, A. Lacey, R. van Leeuwen, M. Lungwitz, B. Makariev, M. Malakhov, A.I. Mateev, M. Melkumov, G.L. Mitrovski, M. Mrowczynski, St. Nicolic, V. Palla, G. Panagiotou, A.D. Petridis, A. Peryt, W. Pikna, M. Pluta, J. Prindle, D. Puhlhofer, F. Renfordt, R. Roland, C. Roland, G. Rybczynski, M. Rybicki, A. Sandoval, A. Schmitz, N. Schuster, T. Seyboth, P. Sikler, F. Sitar, B. Skrzypczak, E. Slodkowski, M. Stefanek, G. Stock, R. Strobele, H. Susa, T. Szuba, M. Varga, D. Vassiliou, M. Veres, G.I. Vesztergombi, G. Vranic, D. Wlodarczyk, Z. Antoniou, N.G. Diakonos, F.K. Mavromanolakis, G. |
| author_sort | Anticic, T. |
| collection | CERN |
| description | Pion production in nuclear collisions at the SPS is investigated with the aim to search, in a restricted domain of the phase diagram, for power-laws in the behaviour of correlations which are compatible with critical QCD. We have analysed interactions of nuclei of different size (p+p, C+C, Si+Si, Pb+Pb) at 158A GeV adopting, as appropriate observables, scaled factorial moments in a search for intermittent fluctuations in transverse dimensions. The analysis is performed for $\pi^+\pi^-$ pairs with invariant mass very close to the two-pion threshold. In this sector one may capture critical fluctuations of the sigma component in a hadronic medium, even if the $\sigma$-meson has no well defined vacuum state. Our results indicate the presence of power-law fluctuations in the freeze-out state of the Si+Si system approaching in size the prediction of critical QCD. |
| id | cern-1230242 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2009 |
| record_format | invenio |
| spelling | cern-12302422023-03-14T20:47:30Zdoi:10.1103/PhysRevC.81.064907http://cds.cern.ch/record/1230242engAnticic, T.Baatar, B.Barna, D.Bartke, J.Betev, L.Bialkowska, H.Blume, C.Boimska, B.Botje, M.Bracinik, J.Buncic, P.Cerny, V.Christakoglou, P.Chung, P.Chvala, O.Cramer, J.G.Dinkelaker, P.Eckardt, V.Fodor, Z.Foka, P.Friese, V.Gazdzicki, M.Genchev, V.Grebieszkow, K.Hohne, C.Kadija, K.Karev, A.Kolesnikov, V.I.Kowalski, M.Kreps, M.Laszlo, A.Lacey, R.van Leeuwen, M.Lungwitz, B.Makariev, M.Malakhov, A.I.Mateev, M.Melkumov, G.L.Mitrovski, M.Mrowczynski, St.Nicolic, V.Palla, G.Panagiotou, A.D.Petridis, A.Peryt, W.Pikna, M.Pluta, J.Prindle, D.Puhlhofer, F.Renfordt, R.Roland, C.Roland, G.Rybczynski, M.Rybicki, A.Sandoval, A.Schmitz, N.Schuster, T.Seyboth, P.Sikler, F.Sitar, B.Skrzypczak, E.Slodkowski, M.Stefanek, G.Stock, R.Strobele, H.Susa, T.Szuba, M.Varga, D.Vassiliou, M.Veres, G.I.Vesztergombi, G.Vranic, D.Wlodarczyk, Z.Antoniou, N.G.Diakonos, F.K.Mavromanolakis, G.Search for the QCD critical point in nuclear collisions at the CERN SPSNuclear Physics - ExperimentPion production in nuclear collisions at the SPS is investigated with the aim to search, in a restricted domain of the phase diagram, for power-laws in the behaviour of correlations which are compatible with critical QCD. We have analysed interactions of nuclei of different size (p+p, C+C, Si+Si, Pb+Pb) at 158A GeV adopting, as appropriate observables, scaled factorial moments in a search for intermittent fluctuations in transverse dimensions. The analysis is performed for $\pi^+\pi^-$ pairs with invariant mass very close to the two-pion threshold. In this sector one may capture critical fluctuations of the sigma component in a hadronic medium, even if the $\sigma$-meson has no well defined vacuum state. Our results indicate the presence of power-law fluctuations in the freeze-out state of the Si+Si system approaching in size the prediction of critical QCD.Pion production in nuclear collisions at the SPS is investigated with the aim to search, in a restricted domain of the phase diagram, for power-laws in the behavior of correlations which are compatible with critical QCD. We have analyzed interactions of nuclei of different size (p+p, C+C, Si+Si, Pb+Pb) at 158$A$ GeV adopting, as appropriate observables, scaled factorial moments in a search for intermittent fluctuations in transverse dimensions. The analysis is performed for $\pi^+\pi^-$ pairs with invariant mass very close to the two-pion threshold. In this sector one may capture critical fluctuations of the sigma component in a hadronic medium, even if the $\sigma$-meson has no well defined vacuum state. It turns out that for the Pb+Pb system the proposed analysis technique cannot be applied without entering the invariant mass region with strong Coulomb correlations. As a result the treatment becomes inconclusive in this case. Our results for the other systems indicate the presence of power-law fluctuations in the freeze-out state of Si+Si approaching in size the prediction of critical QCD.arXiv:0912.4198oai:cds.cern.ch:12302422009-12-22 |
| spellingShingle | Nuclear Physics - Experiment Anticic, T. Baatar, B. Barna, D. Bartke, J. Betev, L. Bialkowska, H. Blume, C. Boimska, B. Botje, M. Bracinik, J. Buncic, P. Cerny, V. Christakoglou, P. Chung, P. Chvala, O. Cramer, J.G. Dinkelaker, P. Eckardt, V. Fodor, Z. Foka, P. Friese, V. Gazdzicki, M. Genchev, V. Grebieszkow, K. Hohne, C. Kadija, K. Karev, A. Kolesnikov, V.I. Kowalski, M. Kreps, M. Laszlo, A. Lacey, R. van Leeuwen, M. Lungwitz, B. Makariev, M. Malakhov, A.I. Mateev, M. Melkumov, G.L. Mitrovski, M. Mrowczynski, St. Nicolic, V. Palla, G. Panagiotou, A.D. Petridis, A. Peryt, W. Pikna, M. Pluta, J. Prindle, D. Puhlhofer, F. Renfordt, R. Roland, C. Roland, G. Rybczynski, M. Rybicki, A. Sandoval, A. Schmitz, N. Schuster, T. Seyboth, P. Sikler, F. Sitar, B. Skrzypczak, E. Slodkowski, M. Stefanek, G. Stock, R. Strobele, H. Susa, T. Szuba, M. Varga, D. Vassiliou, M. Veres, G.I. Vesztergombi, G. Vranic, D. Wlodarczyk, Z. Antoniou, N.G. Diakonos, F.K. Mavromanolakis, G. Search for the QCD critical point in nuclear collisions at the CERN SPS |
| title | Search for the QCD critical point in nuclear collisions at the CERN SPS |
| title_full | Search for the QCD critical point in nuclear collisions at the CERN SPS |
| title_fullStr | Search for the QCD critical point in nuclear collisions at the CERN SPS |
| title_full_unstemmed | Search for the QCD critical point in nuclear collisions at the CERN SPS |
| title_short | Search for the QCD critical point in nuclear collisions at the CERN SPS |
| title_sort | search for the qcd critical point in nuclear collisions at the cern sps |
| topic | Nuclear Physics - Experiment |
| url | https://dx.doi.org/10.1103/PhysRevC.81.064907 http://cds.cern.ch/record/1230242 |
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