Critical fluctuations of the proton density in A+A collisions at 158A GeV

T. Anticic , B. Baatar , D. Barna , J. Bartke , J. Beck , L. Betev , H. Bia{\l}kowska , C. Blume

show 66 more authors

M. Bogusz B. Boimska J. Book M. Botje P. Bun\v{c}i\'c T. Cetner P. Christakoglou P. Chung O. Chvala J. Cramer V. Eckardt Z. Fodor P. Foka V. Friese M. Ga\'zdzicki K. Grebieszkow C. H\"ohne K. Kadija A. Karev V. I. Kolesnikov M. Kowalski D. Kresan A. Laszlo R. Lacey M. van Leeuwen M. Ma\'ckowiak-Paw{\l}owska M. Makariev A. I. Malakhov M. Mateev G. L. Melkumov M. Mitrovski St. Mr\'owczy\'nski G. P\'alla A. D. Panagiotou W. Peryt J. Pluta D. Prindle F. P\"uhlhofer R. Renfordt C. Roland G. Roland A. Rustamov M. Rybczy\'nski A. Rybicki A. Sandoval N. Schmitz T. Schuster P. Seyboth F. Sikl\'er E. Skrzypczak M. Slodkowski G. Stefanek R. Stock H. Str\"obele T. Susa M. Szuba D. Varga M. Vassiliou G. I. Veres G. Vesztergombi D. Vrani\'c Z. W{\l}odarczyk A. Wojtaszek-Szwar\'c (NA49 Collaboration) N. G. Antoniou N. Davis F. K. Diakonos

Authors on Pith no claims yet

classification ⚛️ nucl-ex hep-exhep-ph

keywords fluctuationscollisionscriticalpower-lawexpectedtextanalysisaround

0 comments

read the original abstract

We look for fluctuations expected for the QCD critical point using an intermittency analysis in the transverse momentum phase space of protons produced around midrapidity in the 12.5\% most central C+C, Si+Si and Pb+Pb collisions at the maximum SPS energy of 158$A$~GeV. We find evidence of power-law fluctuations for the Si+Si data. The fitted power-law exponent $\phi_{2} = 0.96^{+0.38}_{-0.25}\text{ (stat.)}$ $\pm 0.16\text{ (syst.)}$ is consistent with the va\-lue expected for critical fluctuations. Power-law fluctuations had previously also been observed in low-mass $\pi^+ \pi^-$ pairs in the same Si+Si collisions.

This paper has not been read by Pith yet.

Critical fluctuations of the proton density in A+A collisions at 158A GeV

discussion (0)