Searching for Minimum in Dependence of Squared Speed-of-Sound on Collision Energy

Liu, Fu-Hu; Gao, Li-Na; Lacey, Roy A.

doi:10.1155/2016/9467194

Title: Searching for Minimum in Dependence of Squared Speed-of-Sound on Collision Energy

Journal Article · 31 December 2015 · Advances in High Energy Physics

DOI: https://doi.org/10.1155/2016/9467194 · OSTI ID:1252833

^[1]; Gao, Li-Na ^[1]; Lacey, Roy A. ^[2]

Institute of Theoretical Physics, Shanxi University, Taiyuan, Shanxi 030006, China
Departments of Chemistry & Physics, Stony Brook University, Stony Brook, NY 11794, USA

Experimental results of the rapidity distributions of negatively charged pions produced in proton-proton ( $p$ - $p$ ) and beryllium-beryllium (Be-Be) collisions at different beam momentums, measured by the NA61/SHINE Collaboration at the super proton synchrotron (SPS), are described by a revised (three-source) Landau hydrodynamic model. The squared speed-of-sound parameter $c_{s}^{2}$ is then extracted from the width of rapidity distribution. There is a local minimum (knee point) which indicates a softest point in the equation of state (EoS) appearing at about $40 A$ GeV/ $c$ (or 8.8 GeV) in $c_{s}^{2}$ excitation function (the dependence of $c_{s}^{2}$ on incident beam momentum (or center-of-mass energy)). This knee point should be related to the searching for the onset of quark deconfinement and the critical point of quark-gluon plasma (QGP) phase transition.

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Research Organization:: New York State University Research Foundation

Sponsoring Organization:: National Natural Science Foundation of China; USDOE

Grant/Contract Number:: FG02-87ER40331

OSTI ID:: 1252833

Journal Information:: Advances in High Energy Physics, Journal Name: Advances in High Energy Physics Vol. 2016; ISSN 1687-7357

Publisher:: Hindawi Publishing CorporationCopyright Statement

Country of Publication:: Egypt

Language:: English

References (30)

Relativistic diffusion model Wolschin, G. The European Physical Journal A, Vol. 5, Issue 1 https://doi.org/10.1007/s100500050260	journal	May 1999
On Multiple Production of Particles During Collisions of Fast Particles Haar, D. Ter Collected Papers of L.D. Landau https://doi.org/10.1016/B978-0-08-010586-4.50079-1	book	January 1965
A Hydrodynamic Theory of Multiple Formation of Particles Haar, D. Ter Collected Papers of L.D. Landau https://doi.org/10.1016/B978-0-08-010586-4.50093-6	book	January 1965
Bulk Dynamics in Heavy Ion Collisions Steinberg, Peter A. Nuclear Physics A, Vol. 752 https://doi.org/10.1016/j.nuclphysa.2005.02.139	journal	April 2005
Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at sNN=2.76 TeV Abbas, E.; Abelev, B.; Adam, J. Physics Letters B, Vol. 726, Issue 4-5 https://doi.org/10.1016/j.physletb.2013.09.022	journal	November 2013
Pseudorapidity distribution of charged hadrons in proton–proton collisions at s = 13 TeV Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A. Physics Letters B, Vol. 751 https://doi.org/10.1016/j.physletb.2015.10.004	journal	December 2015
Pseudorapidity and transverse-momentum distributions of charged particles in proton–proton collisions at s = 13 TeV Adam, J.; Adamová, D.; Aggarwal, M. M. Physics Letters B, Vol. 753 https://doi.org/10.1016/j.physletb.2015.12.030	journal	February 2016
Diffusion in relativistic systems Wolschin, Georg Progress in Particle and Nuclear Physics, Vol. 59, Issue 1 https://doi.org/10.1016/j.ppnp.2007.01.007	journal	July 2007
Identified hadron production from the RHIC beam energy scan Kumar, Lokesh Journal of Physics G: Nuclear and Particle Physics, Vol. 38, Issue 12 https://doi.org/10.1088/0954-3899/38/12/124145	journal	November 2011
Particle production sources at LHC energies Wolschin, Georg Journal of Physics G: Nuclear and Particle Physics, Vol. 40, Issue 4 https://doi.org/10.1088/0954-3899/40/4/045104	journal	March 2013
Baryonic response of dense holographic QCD Kim, Keun-Young; Zahed, Ismail Journal of High Energy Physics, Vol. 2008, Issue 12 https://doi.org/10.1088/1126-6708/2008/12/075	journal	December 2008
Sound waves in (2+1) dimensional holographic magnetic fluids Buchbinder, Evgeny I.; Buchel, Alex; Vázquez, Samuel E. Journal of High Energy Physics, Vol. 2008, Issue 12 https://doi.org/10.1088/1126-6708/2008/12/090	journal	December 2008
Energy dependence of hadron spectra and yields in p+p and ⁷ Be+ ⁹ Be collisions from the NA61/SHINE experiment at the CERN SPS Larsen, D. T. Journal of Physics: Conference Series, Vol. 668 https://doi.org/10.1088/1742-6596/668/1/012020	journal	January 2016
Baryon stopping signal for mixed phase formation in HIC Ivanov, Yu. B. Journal of Physics: Conference Series, Vol. 668 https://doi.org/10.1088/1742-6596/668/1/012061	journal	January 2016
Rapidity and Angular Distributions of Charged Secondaries According to the Hydrodynamical Model of Particle Production Carruthers, P.; Duong-van, Minh Physical Review D, Vol. 8, Issue 3 https://doi.org/10.1103/PhysRevD.8.859	journal	August 1973
Indications for a Critical End Point in the Phase Diagram for Hot and Dense Nuclear Matter Lacey, Roy A. Physical Review Letters, Vol. 114, Issue 14 https://doi.org/10.1103/PhysRevLett.114.142301	journal	April 2015
Charged-Particle Pseudorapidity Density Distributions from A u + A u Collisions at s NN = 130 GeV Back, B. B.; Baker, M. D.; Barton, D. S. Physical Review Letters, Vol. 87, Issue 10 https://doi.org/10.1103/PhysRevLett.87.102303	journal	August 2001
Multiplicity and Pseudorapidity Distributions of Photons in Au + Au Collisions at s N N = 62.4 GeV Adams, J.; Aggarwal, M. M.; Ahammed, Z. Physical Review Letters, Vol. 95, Issue 6 https://doi.org/10.1103/PhysRevLett.95.062301	journal	August 2005
Energy dependence of pion and kaon production in central Pb+Pb collisions Afanasiev, S. V.; Anticic, T.; Barna, D. Physical Review C, Vol. 66, Issue 5 https://doi.org/10.1103/physrevc.66.054902	journal	November 2002
Measurement of density correlations in pseudorapidity via charged particle multiplicity fluctuations in Au+Au collisions at s NN = 200 GeV Adler, S. S.; Afanasiev, S.; Aidala, C. Physical Review C, Vol. 76, Issue 3 https://doi.org/10.1103/physrevc.76.034903	journal	September 2007
Landau hydrodynamics reexamined Wong, Cheuk-Yin Physical Review C, Vol. 78, Issue 5 https://doi.org/10.1103/physrevc.78.054902	journal	November 2008
Charged-particle multiplicity and pseudorapidity distributions measured with the PHOBOS detector in Au + Au , Cu + Cu , d + Au , and p + p collisions at ultrarelativistic energies Alver, B.; Back, B. B.; Baker, M. D. Physical Review C, Vol. 83, Issue 2 https://doi.org/10.1103/physrevc.83.024913	journal	February 2011
Heretical Models of Particle Production Carruthers†, P. Annals of the New York Academy of Sciences, Vol. 229, Issue 1 Recent Advanc https://doi.org/10.1111/j.1749-6632.1974.tb20539.x	journal	May 1974
Extraction of the sound velocity from rapidity spectra: Evidence for QGP formation at FAIR/RHIC-BES energies Steinheimer, J.; Bleicher, M. The European Physical Journal A, Vol. 48, Issue 7 https://doi.org/10.1140/epja/i2012-12100-0	journal	July 2012
Measurement of negatively charged pion spectra in inelastic p+p interactions at $$p_{\mathbf {lab}}= $$ p lab = 20, 31, 40, 80 and 158 GeV/c: NA61/SHINE Collaboration Abgrall, N.; Aduszkiewicz, A.; Ali, Y. The European Physical Journal C, Vol. 74, Issue 3 https://doi.org/10.1140/epjc/s10052-014-2794-6	journal	March 2014
On Pseudorapidity Distribution and Speed of Sound in High Energy Heavy Ion Collisions Based on a New Revised Landau Hydrodynamic Model Gao, Li-Na; Liu, Fu-Hu Advances in High Energy Physics, Vol. 2015 https://doi.org/10.1155/2015/184713	journal	January 2015
On Distributions of Emission Sources and Speed-of-Sound in Proton-Proton (Proton-Antiproton) Collisions Gao, Li-Na; Liu, Fu-Hu Advances in High Energy Physics, Vol. 2015 https://doi.org/10.1155/2015/641906	journal	January 2015
Pseudorapidity distributions of produced charged hadrons in pp collisions at RHIC and LHC energies Wolschin, G. EPL (Europhysics Letters), Vol. 95, Issue 6 https://doi.org/10.1209/0295-5075/95/61001	journal	September 2011
The horn, kink and step, dale: from few GeV to few TeV Rustamov, Anar Open Physics, Vol. 10, Issue 6 https://doi.org/10.2478/s11534-012-0148-2	journal	January 2012
Gazdzicki, M.; Gorenstein, M.; Seyboth, P. Acta Physica Polonica B, Vol. 42, Issue 2 https://doi.org/10.5506/aphyspolb.42.307	journal	January 2011

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