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Title: Scaling properties in bulk and p T -dependent particle production near midrapidity in relativistic heavy ion collisions

Abstract

The centrality dependence of the midrapidity charged-particle multiplicity density (|η| < 1) is presented for Au + Au and Cu + Cu collisions at RHIC over a broad range of collision energies. The multiplicity measured in the Cu + Cu system is found to be similar to that measured in the Au + Au system, for an equivalent Npart, with the observed factorization in energy and centrality still persistent in the smaller Cu + Cu system. The extent of the similarities observed for bulk particle production is tested by a comparative analysis of the inclusive transverse momentum distributions for Au + Au and Cu + Cu collisions near midrapidity. It is found that, within the uncertainties of the data, the ratio of yields between the various energies for both Au + Au and Cu + Cu systems are similar and constant with centrality, both in the bulk yields and as a function of pT, up to at least 4 GeV/c. As a result, the effects of multiple nucleon collisions that strongly increase with centrality and energy appear to only play a minor role in bulk and intermediate transverse momentum particle production.

Authors:
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Publication Date:
Research Org.:
Univ. of Maryland, College Park, MD (United States); Rochester Univ., Rochester, NY (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Argonne National Lab., Argonne, IL (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE
Contributing Org.:
PHOBOS Collaboration
OSTI Identifier:
1505732
Grant/Contract Number:  
FG02-93ER40802; AC02-98CH10886; FG02-94ER40818; FG02-94ER40865; FG02-99ER41099; AC02-06CH11357; 9603486; 0072204; 0245011; NSC 89-2112-M-008-024; F 049823
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 80; Journal Issue: 1; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Alver, B., Back, B. B., Baker, M. D., Ballintijn, M., Barton, D. S., Betts, R. R., Bindel, R., Busza, W., Chai, Z., Chetluru, V., García, E., Gburek, T., Gulbrandsen, K., Hamblen, J., Harnarine, I., Henderson, C., Hofman, D. J., Hollis, R. S., Hołyński, R., Holzman, B., Iordanova, A., Kane, J. L., Kulinich, P., Kuo, C. M., Li, W., Lin, W. T., Loizides, C., Manly, S., Mignerey, A. C., Nouicer, R., Olszewski, A., Pak, R., Reed, C., Richardson, E., Roland, C., Roland, G., Sagerer, J., Sedykh, I., Smith, C. E., Stankiewicz, M. A., Steinberg, P., Stephans, G. S. F., Sukhanov, A., Szostak, A., Tonjes, M. B., Trzupek, A., Nieuwenhuizen, G. J. van, Vaurynovich, S. S., Verdier, R., Veres, G., Walters, P., Wenger, E., Willhelm, D., Wolfs, F. L. H., Wosiek, B., Woźniak, K., Wyngaardt, S., and Wysłouch, B. Scaling properties in bulk and pT-dependent particle production near midrapidity in relativistic heavy ion collisions. United States: N. p., 2009. Web. doi:10.1103/physrevc.80.011901.
Alver, B., Back, B. B., Baker, M. D., Ballintijn, M., Barton, D. S., Betts, R. R., Bindel, R., Busza, W., Chai, Z., Chetluru, V., García, E., Gburek, T., Gulbrandsen, K., Hamblen, J., Harnarine, I., Henderson, C., Hofman, D. J., Hollis, R. S., Hołyński, R., Holzman, B., Iordanova, A., Kane, J. L., Kulinich, P., Kuo, C. M., Li, W., Lin, W. T., Loizides, C., Manly, S., Mignerey, A. C., Nouicer, R., Olszewski, A., Pak, R., Reed, C., Richardson, E., Roland, C., Roland, G., Sagerer, J., Sedykh, I., Smith, C. E., Stankiewicz, M. A., Steinberg, P., Stephans, G. S. F., Sukhanov, A., Szostak, A., Tonjes, M. B., Trzupek, A., Nieuwenhuizen, G. J. van, Vaurynovich, S. S., Verdier, R., Veres, G., Walters, P., Wenger, E., Willhelm, D., Wolfs, F. L. H., Wosiek, B., Woźniak, K., Wyngaardt, S., & Wysłouch, B. Scaling properties in bulk and pT-dependent particle production near midrapidity in relativistic heavy ion collisions. United States. doi:10.1103/physrevc.80.011901.
Alver, B., Back, B. B., Baker, M. D., Ballintijn, M., Barton, D. S., Betts, R. R., Bindel, R., Busza, W., Chai, Z., Chetluru, V., García, E., Gburek, T., Gulbrandsen, K., Hamblen, J., Harnarine, I., Henderson, C., Hofman, D. J., Hollis, R. S., Hołyński, R., Holzman, B., Iordanova, A., Kane, J. L., Kulinich, P., Kuo, C. M., Li, W., Lin, W. T., Loizides, C., Manly, S., Mignerey, A. C., Nouicer, R., Olszewski, A., Pak, R., Reed, C., Richardson, E., Roland, C., Roland, G., Sagerer, J., Sedykh, I., Smith, C. E., Stankiewicz, M. A., Steinberg, P., Stephans, G. S. F., Sukhanov, A., Szostak, A., Tonjes, M. B., Trzupek, A., Nieuwenhuizen, G. J. van, Vaurynovich, S. S., Verdier, R., Veres, G., Walters, P., Wenger, E., Willhelm, D., Wolfs, F. L. H., Wosiek, B., Woźniak, K., Wyngaardt, S., and Wysłouch, B. Mon . "Scaling properties in bulk and pT-dependent particle production near midrapidity in relativistic heavy ion collisions". United States. doi:10.1103/physrevc.80.011901. https://www.osti.gov/servlets/purl/1505732.
@article{osti_1505732,
title = {Scaling properties in bulk and pT-dependent particle production near midrapidity in relativistic heavy ion collisions},
author = {Alver, B. and Back, B. B. and Baker, M. D. and Ballintijn, M. and Barton, D. S. and Betts, R. R. and Bindel, R. and Busza, W. and Chai, Z. and Chetluru, V. and García, E. and Gburek, T. and Gulbrandsen, K. and Hamblen, J. and Harnarine, I. and Henderson, C. and Hofman, D. J. and Hollis, R. S. and Hołyński, R. and Holzman, B. and Iordanova, A. and Kane, J. L. and Kulinich, P. and Kuo, C. M. and Li, W. and Lin, W. T. and Loizides, C. and Manly, S. and Mignerey, A. C. and Nouicer, R. and Olszewski, A. and Pak, R. and Reed, C. and Richardson, E. and Roland, C. and Roland, G. and Sagerer, J. and Sedykh, I. and Smith, C. E. and Stankiewicz, M. A. and Steinberg, P. and Stephans, G. S. F. and Sukhanov, A. and Szostak, A. and Tonjes, M. B. and Trzupek, A. and Nieuwenhuizen, G. J. van and Vaurynovich, S. S. and Verdier, R. and Veres, G. and Walters, P. and Wenger, E. and Willhelm, D. and Wolfs, F. L. H. and Wosiek, B. and Woźniak, K. and Wyngaardt, S. and Wysłouch, B.},
abstractNote = {The centrality dependence of the midrapidity charged-particle multiplicity density (|η| < 1) is presented for Au + Au and Cu + Cu collisions at RHIC over a broad range of collision energies. The multiplicity measured in the Cu + Cu system is found to be similar to that measured in the Au + Au system, for an equivalent Npart, with the observed factorization in energy and centrality still persistent in the smaller Cu + Cu system. The extent of the similarities observed for bulk particle production is tested by a comparative analysis of the inclusive transverse momentum distributions for Au + Au and Cu + Cu collisions near midrapidity. It is found that, within the uncertainties of the data, the ratio of yields between the various energies for both Au + Au and Cu + Cu systems are similar and constant with centrality, both in the bulk yields and as a function of pT, up to at least 4 GeV/c. As a result, the effects of multiple nucleon collisions that strongly increase with centrality and energy appear to only play a minor role in bulk and intermediate transverse momentum particle production.},
doi = {10.1103/physrevc.80.011901},
journal = {Physical Review. C, Nuclear Physics},
number = 1,
volume = 80,
place = {United States},
year = {2009},
month = {7}
}

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Figures / Tables:

FIG. 1 FIG. 1: The charged-particle pseudorapidity density at midrapidity (|η| < 1), scaled by the number of participating nucleon pairs, for (a) Au + Au collisions and (b) Cu + Cu collisions. The shaded ellipses in panel (a) represent the uncertainty on the new peripheral data; unshaded ellipses are from Ref.more » [7]. In panel (b), the lines represent the Au + Au data (no errors) for comparison, where the 19.6-GeV data are scaled by 1.055 to account for the difference in collision energy from 22.4 GeV for the Cu + Cu data. The open symbols at Npart = 2 represent the inelastic p + p data at equivalent energies to the data, as in Ref. [6]. The ellipses represent 90% C.L. systematic errors.« less

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Works referenced in this record:

Charged hadron transverse momentum distributions in Au+Au collisions at sNN=200 GeV
journal, January 2004


Energy dependence of <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msup><mml:mi>π</mml:mi><mml:mo>±</mml:mo></mml:msup></mml:math>, p and <mml:math altimg="si2.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mover accent="true"><mml:mi>p</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math> transverse momentum spectra for <mml:math altimg="si3.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi mathvariant="normal">Au</mml:mi><mml:mo>+</mml:mo><mml:mi mathvariant="normal">Au</mml:mi></mml:math> collisions at <mml:math altimg="si4.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:msqrt><mml:msub><mml:mi>s</mml:mi><mml:mi mathvariant="normal">NN</mml:mi></mml:msub></mml:msqrt><mml:mo>=</mml:mo><mml:mn>62.4</mml:mn></mml:math> and 200 GeV
journal, November 2007


Energy Dependence of Particle Multiplicities in Central A u + A u Collisions
journal, December 2001


HIJING 1.0: A Monte Carlo program for parton and particle production in high energy hadronic and nuclear collisions
journal, December 1994


Vertex reconstruction using a single layer silicon detector
journal, January 2007

  • García, E.; Hollis, R. S.; Olszewski, A.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 570, Issue 3
  • DOI: 10.1016/j.nima.2006.10.355

Centrality Dependence of Charged Hadron Transverse Momentum Spectra in A u + A u Collisions from s N N = 62.4 to 200 GeV
journal, March 2005


Using multiplicity as a fractional cross-section estimation for centrality in PHOBOS
journal, January 2005

  • Collaboration, Richard S. Hollis for the PHOBOS; Back, B. B.; Baker, M. D.
  • Journal of Physics: Conference Series, Vol. 5
  • DOI: 10.1088/1742-6596/5/1/004

Centrality dependence of the charged particle multiplicity near midrapidity in Au + Au collisions at s NN = 130 and 200 GeV
journal, June 2002


Multiphase transport model for relativistic nuclear collisions
journal, May 2000


The PHOBOS detector at RHIC
journal, March 2003

  • Back, B. B.; Baker, M. D.; Barton, D. S.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 499, Issue 2-3
  • DOI: 10.1016/S0168-9002(02)01959-9

The PHOBOS perspective on discoveries at RHIC
journal, August 2005


Collision geometry scaling of Au + Au pseudorapidity density from s N N = 19.6 to 200 GeV
journal, August 2004


Hadron production in nuclear collisions at RHIC and high-density QCD
journal, May 2001


Charged-particle pseudorapidity distributions in Au+Au collisions at s NN = 62.4 GeV
journal, August 2006


Centrality and energy dependence of charged-particle multiplicities in heavy ion collisions in the context of elementary reactions
journal, August 2006


    Works referencing / citing this record:

    Core–corona model describes the centrality dependence of v 2
    journal, August 2010


    Hadron spectra and elliptic flow for 200  A GeV Au + Au collisions from viscous hydrodynamics coupled to a Boltzmann cascade
    journal, May 2011


    Radial and elliptic flow in Pb + Pb collisions at energies available at the CERN Large Hadron Collider from viscous hydrodynamics
    journal, October 2011


    200 A GeV Au + Au Collisions Serve a Nearly Perfect Quark-Gluon Liquid
    journal, May 2011


      Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.