Search for the QCD critical point in nuclear collisions at 158A GeV at the CERN Super Proton Synchrotron (SPS)

T. Anticic; B. Baatar; D. Barna; J. Bartke; L. Betev; H. Białkowska; C. Blume; B. Boimska; M. Botje; J. Bracinik; P. Bunčić; V. Cerny; P. Christakoglou; P. Chung; O. Chvala; J. G. Cramer; P. Dinkelaker; V. Eckardt; Z. Fodor; P. Foka; V. Friese; M. Gaździcki; V. Genchev; K. Grebieszkow; C. Höhne; K. Kadija; A. Karev; V. I. Kolesnikov; M. Kowalski; M. Kreps; A. Laszlo; R. Lacey; M. Van Leeuwen; B. Lungwitz; M. Makariev; A. I. Malakhov; M. Mateev; G. L. Melkumov; M. Mitrovski; St Mrówczyński; V. Nicolic; G. Pálla; A. D. Panagiotou; A. Petridis; W. Peryt; M. Pikna; J. Pluta; D. Prindle; F. Pühlhofer; R. Renfordt; C. Roland; G. Roland; M. Rybczyński; A. Rybicki; A. Sandoval; N. Schmitz; T. Schuster; P. Seyboth; F. Siklér; B. Sitar; E. Skrzypczak; M. Slodkowski; G. Stefanek; R. Stock; H. Ströbele; T. Susa; M. Szuba; D. Varga; M. Vassiliou; G. I. Veres; G. Vesztergombi; D. Vranić; Z. Włodarczyk; N. G. Antoniou; F. K. Diakonos; G. Mavromanolakis

doi:10.1103/PhysRevC.81.064907

Search for the QCD critical point in nuclear collisions at 158A GeV at the CERN Super Proton Synchrotron (SPS)

T. Anticic
, B. Baatar
, D. Barna
, J. Bartke
, L. Betev
, H. Białkowska
, C. Blume
, B. Boimska
, M. Botje
, J. Bracinik
, P. Bunčić
, V. Cerny
, P. Christakoglou
, P. Chung
, O. Chvala
, J. G. Cramer
, P. Dinkelaker
, V. Eckardt
, Z. Fodor
, P. Foka

V. Friese, M. Gaździcki, V. Genchev, K. Grebieszkow, C. Höhne, K. Kadija, A. Karev, V. I. Kolesnikov, M. Kowalski, M. Kreps, A. Laszlo, R. Lacey, M. Van Leeuwen, B. Lungwitz, M. Makariev, A. I. Malakhov, M. Mateev, G. L. Melkumov, M. Mitrovski, St Mrówczyński, V. Nicolic, G. Pálla, A. D. Panagiotou, A. Petridis, W. Peryt, M. Pikna, J. Pluta, D. Prindle, F. Pühlhofer, R. Renfordt, C. Roland, G. Roland, M. Rybczyński, A. Rybicki, A. Sandoval, N. Schmitz, T. Schuster, P. Seyboth, F. Siklér, B. Sitar, E. Skrzypczak, M. Slodkowski, G. Stefanek, R. Stock, H. Ströbele, T. Susa, M. Szuba, D. Varga, M. Vassiliou, G. I. Veres, G. Vesztergombi, D. Vranić, Z. Włodarczyk, N. G. Antoniou, F. K. Diakonos, G. Mavromanolakis

Chemistry

Ruder Boskovic Institute
Joint Institute for Nuclear Research
Wigner Research Centre for Physics
Institute of Nuclear Physics
CERN
Institute of Nuclear Chemistry and Technology, Warsaw
Goethe University Frankfurt
National Institute for Subatomic Physics
Comenius University
Stony Brook University
Charles University
University of Washington
Max Planck Institute for Physics (Werner Heisenberg Institute)
GSI Helmholtz Centre for Heavy Ion Research
Jan Kochanowski University in Kielce
Bulgarian Academy of Sciences
Warsaw University of Technology
Sofia University St. Kliment Ohridski
National and Kapodistrian University of Athens
University of Marburg
Massachusetts Institute of Technology
University of Warsaw
University of Cambridge

Research output: Contribution to journal › Article › peer-review

64 Scopus citations

Abstract

Pion production in nuclear collisions at the Super Proton Synchrotron (SPS) is investigated with the aim to search, in a restricted domain of the phase diagram, for power laws in the behavior of correlations that are compatible with critical QCD. We analyzed interactions of nuclei of different sizes (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 π⁺π^- pairs with an 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 σ 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.

Original language	English
Article number	064907
Journal	Physical Review C - Nuclear Physics
Volume	81
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.81.064907
State	Published - Jun 22 2010

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10.1103/PhysRevC.81.064907

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Anticic, T., Baatar, B., Barna, D., Bartke, J., Betev, L., Białkowska, H., Blume, C., Boimska, B., Botje, M., Bracinik, J., Bunčić, P., Cerny, V., Christakoglou, P., Chung, P., Chvala, O., Cramer, J. G., Dinkelaker, P., Eckardt, V., Fodor, Z., ... Mavromanolakis, G. (2010). Search for the QCD critical point in nuclear collisions at 158A GeV at the CERN Super Proton Synchrotron (SPS). Physical Review C - Nuclear Physics, 81(6), Article 064907. https://doi.org/10.1103/PhysRevC.81.064907

@article{f6b55bb09f2642ee9622e47b004da6eb,

title = "Search for the QCD critical point in nuclear collisions at 158A GeV at the CERN Super Proton Synchrotron (SPS)",

abstract = "Pion production in nuclear collisions at the Super Proton Synchrotron (SPS) is investigated with the aim to search, in a restricted domain of the phase diagram, for power laws in the behavior of correlations that are compatible with critical QCD. We analyzed interactions of nuclei of different sizes (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 π+π- pairs with an 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 σ 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.",

author = "T. Anticic and B. Baatar and D. Barna and J. Bartke and L. Betev and H. Bia{\l}kowska and C. Blume and B. Boimska and M. Botje and J. Bracinik and P. Bun{\v c}i{\'c} and V. Cerny and P. Christakoglou and P. Chung and O. Chvala and Cramer, \{J. G.\} and P. Dinkelaker and V. Eckardt and Z. Fodor and P. Foka and V. Friese and M. Ga{\'z}dzicki and V. Genchev and K. Grebieszkow and C. H{\"o}hne and K. Kadija and A. Karev and Kolesnikov, \{V. I.\} and M. Kowalski and M. Kreps and A. Laszlo and R. Lacey and \{Van Leeuwen\}, M. and B. Lungwitz and M. Makariev and Malakhov, \{A. I.\} and M. Mateev and Melkumov, \{G. L.\} and M. Mitrovski and St Mr{\'o}wczy{\'n}ski and V. Nicolic and G. P{\'a}lla and Panagiotou, \{A. D.\} and A. Petridis and W. Peryt and M. Pikna and J. Pluta and D. Prindle and F. P{\"u}hlhofer and R. Renfordt and C. Roland and G. Roland and M. Rybczy{\'n}ski and A. Rybicki and A. Sandoval and N. Schmitz and T. Schuster and P. Seyboth and F. Sikl{\'e}r and B. Sitar and E. Skrzypczak and M. Slodkowski and G. Stefanek and R. Stock and H. Str{\"o}bele and T. Susa and M. Szuba and D. Varga and M. Vassiliou and Veres, \{G. I.\} and G. Vesztergombi and D. Vrani{\'c} and Z. W{\l}odarczyk and Antoniou, \{N. G.\} and Diakonos, \{F. K.\} and G. Mavromanolakis",

year = "2010",

month = jun,

day = "22",

doi = "10.1103/PhysRevC.81.064907",

language = "English",

volume = "81",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

number = "6",

}

Anticic, T, Baatar, B, Barna, D, Bartke, J, Betev, L, Białkowska, H, Blume, C, Boimska, B, Botje, M, Bracinik, J, Bunčić, P, Cerny, V, Christakoglou, P, Chung, P, Chvala, O, Cramer, JG, Dinkelaker, P, Eckardt, V, Fodor, Z, Foka, P, Friese, V, Gaździcki, M, Genchev, V, Grebieszkow, K, Höhne, C, Kadija, K, Karev, A, Kolesnikov, VI, Kowalski, M, Kreps, M, Laszlo, A, Lacey, R, Van Leeuwen, M, Lungwitz, B, Makariev, M, Malakhov, AI, Mateev, M, Melkumov, GL, Mitrovski, M, Mrówczyński, S, Nicolic, V, Pálla, G, Panagiotou, AD, Petridis, A, Peryt, W, Pikna, M, Pluta, J, Prindle, D, Pühlhofer, F, Renfordt, R, Roland, C, Roland, G, Rybczyński, M, Rybicki, A, Sandoval, A, Schmitz, N, Schuster, T, Seyboth, P, Siklér, F, Sitar, B, Skrzypczak, E, Slodkowski, M, Stefanek, G, Stock, R, Ströbele, H, Susa, T, Szuba, M, Varga, D, Vassiliou, M, Veres, GI, Vesztergombi, G, Vranić, D, Włodarczyk, Z, Antoniou, NG, Diakonos, FK & Mavromanolakis, G 2010, 'Search for the QCD critical point in nuclear collisions at 158A GeV at the CERN Super Proton Synchrotron (SPS)', Physical Review C - Nuclear Physics, vol. 81, no. 6, 064907. https://doi.org/10.1103/PhysRevC.81.064907

TY - JOUR

T1 - Search for the QCD critical point in nuclear collisions at 158A GeV at the CERN Super Proton Synchrotron (SPS)

AU - Anticic, T.

AU - Baatar, B.

AU - Barna, D.

AU - Bartke, J.

AU - Betev, L.

AU - Białkowska, H.

AU - Blume, C.

AU - Boimska, B.

AU - Botje, M.

AU - Bracinik, J.

AU - Bunčić, P.

AU - Cerny, V.

AU - Christakoglou, P.

AU - Chung, P.

AU - Chvala, O.

AU - Cramer, J. G.

AU - Dinkelaker, P.

AU - Eckardt, V.

AU - Fodor, Z.

AU - Foka, P.

AU - Friese, V.

AU - Gaździcki, M.

AU - Genchev, V.

AU - Grebieszkow, K.

AU - Höhne, C.

AU - Kadija, K.

AU - Karev, A.

AU - Kolesnikov, V. I.

AU - Kowalski, M.

AU - Kreps, M.

AU - Laszlo, A.

AU - Lacey, R.

AU - Van Leeuwen, M.

AU - Lungwitz, B.

AU - Makariev, M.

AU - Malakhov, A. I.

AU - Mateev, M.

AU - Melkumov, G. L.

AU - Mitrovski, M.

AU - Mrówczyński, St

AU - Nicolic, V.

AU - Pálla, G.

AU - Panagiotou, A. D.

AU - Petridis, A.

AU - Peryt, W.

AU - Pikna, M.

AU - Pluta, J.

AU - Prindle, D.

AU - Pühlhofer, F.

AU - Renfordt, R.

AU - Roland, C.

AU - Roland, G.

AU - Rybczyński, M.

AU - Rybicki, A.

AU - Sandoval, A.

AU - Schmitz, N.

AU - Schuster, T.

AU - Seyboth, P.

AU - Siklér, F.

AU - Sitar, B.

AU - Skrzypczak, E.

AU - Slodkowski, M.

AU - Stefanek, G.

AU - Stock, R.

AU - Ströbele, H.

AU - Susa, T.

AU - Szuba, M.

AU - Varga, D.

AU - Vassiliou, M.

AU - Veres, G. I.

AU - Vesztergombi, G.

AU - Vranić, D.

AU - Włodarczyk, Z.

AU - Antoniou, N. G.

AU - Diakonos, F. K.

AU - Mavromanolakis, G.

PY - 2010/6/22

Y1 - 2010/6/22

N2 - Pion production in nuclear collisions at the Super Proton Synchrotron (SPS) is investigated with the aim to search, in a restricted domain of the phase diagram, for power laws in the behavior of correlations that are compatible with critical QCD. We analyzed interactions of nuclei of different sizes (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 π+π- pairs with an 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 σ 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.

AB - Pion production in nuclear collisions at the Super Proton Synchrotron (SPS) is investigated with the aim to search, in a restricted domain of the phase diagram, for power laws in the behavior of correlations that are compatible with critical QCD. We analyzed interactions of nuclei of different sizes (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 π+π- pairs with an 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 σ 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.

UR - https://www.scopus.com/pages/publications/77954061046

U2 - 10.1103/PhysRevC.81.064907

DO - 10.1103/PhysRevC.81.064907

M3 - Article

AN - SCOPUS:77954061046

SN - 0556-2813

VL - 81

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 6

M1 - 064907

ER -

Search for the QCD critical point in nuclear collisions at 158A GeV at the CERN Super Proton Synchrotron (SPS)

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