Rapidity dependence of deuteron production in central Au plus Au collisions at root s(NN)=200 GeV

I. Arsene...[et al.]; Ian Bearden; Hans Bøggild; Christian Holm Christensen; Jens Jørgen Gaardhøje; Børge Svane Nielsen; Carsten Søgaard; Catalin Lucian Ristea; Truls Martin Larsen; P. Christiansen; C. E. Jørgensen

doi:10.1103/PhysRevC.83.044906

Rapidity dependence of deuteron production in central Au plus Au collisions at root s(NN)=200 GeV

I. Arsene...[et al.], Ian Bearden, Hans Bøggild, Christian Holm Christensen, Jens Jørgen Gaardhøje, Børge Svane Nielsen, Carsten Søgaard, Catalin Lucian Ristea, Truls Martin Larsen, P. Christiansen, C. E. Jørgensen

Eksperimentel subatomar fysik

9 Citationer (Scopus)

Abstract

We have measured the distributions of protons and deuterons produced in the 20% most central Au+Au collisions at the Relativistic Heavy-Ion Collider (RHIC) (√sNN=200 GeV) over a very wide range of transverse and longitudinal momentum. Near midrapidity we have also measured the distribution of antiprotons and antideuterons. We present our results in the context of coalescence models. In particular, we extract the "homogeneity volume" and the average phase-space density for protons and antiprotons. Near central rapidity the coalescence parameter B₂(p_T) and the space-averaged phase-space density (p_T) are very similar for both protons and antiprotons. For protons we see little variation of either B₂(p _T) or the space-averaged phase-space density as the rapidity increases from 0 to 3. However, these quantities depend strongly on p _T at all rapidities. These results are in contrast to data from lower-energy collisions where the proton and antiproton phase-space densities are different at y=0, and both B₂ and depend strongly on rapidity.

Originalsprog	Engelsk
Tidsskrift	Physical Review C (Nuclear Physics)
Vol/bind	83
Udgave nummer	4
Sider (fra-til)	044906
ISSN	0556-2813
DOI	https://doi.org/10.1103/PhysRevC.83.044906
Status	Udgivet - 18 apr. 2011

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10.1103/PhysRevC.83.044906

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Arsene...[et al.], I., Bearden, I., Bøggild, H., Christensen, C. H., Gaardhøje, J. J., Nielsen, B. S., Søgaard, C., Ristea, C. L., Larsen, T. M., Christiansen, P., & Jørgensen, C. E. (2011). Rapidity dependence of deuteron production in central Au plus Au collisions at root s(NN)=200 GeV. Physical Review C (Nuclear Physics), 83(4), 044906. https://doi.org/10.1103/PhysRevC.83.044906

Arsene...[et al.], I, Bearden, I , Bøggild, H , Christensen, CH , Gaardhøje, JJ , Nielsen, BS, Søgaard, C, Ristea, CL, Larsen, TM, Christiansen, P & Jørgensen, CE 2011, 'Rapidity dependence of deuteron production in central Au plus Au collisions at root s(NN)=200 GeV', Physical Review C (Nuclear Physics), bind 83, nr. 4, s. 044906. https://doi.org/10.1103/PhysRevC.83.044906

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title = "Rapidity dependence of deuteron production in central Au plus Au collisions at root s(NN)=200 GeV",

abstract = "We have measured the distributions of protons and deuterons produced in the 20% most central Au+Au collisions at the Relativistic Heavy-Ion Collider (RHIC) (√sNN=200 GeV) over a very wide range of transverse and longitudinal momentum. Near midrapidity we have also measured the distribution of antiprotons and antideuterons. We present our results in the context of coalescence models. In particular, we extract the {"}homogeneity volume{"} and the average phase-space density for protons and antiprotons. Near central rapidity the coalescence parameter B2(pT) and the space-averaged phase-space density (pT) are very similar for both protons and antiprotons. For protons we see little variation of either B2(p T) or the space-averaged phase-space density as the rapidity increases from 0 to 3. However, these quantities depend strongly on p T at all rapidities. These results are in contrast to data from lower-energy collisions where the proton and antiproton phase-space densities are different at y=0, and both B2 and depend strongly on rapidity.",

author = "{Arsene...[et al.]}, I. and Ian Bearden and Hans B{\o}ggild and Christensen, {Christian Holm} and Gaardh{\o}je, {Jens J{\o}rgen} and Nielsen, {B{\o}rge Svane} and Carsten S{\o}gaard and Ristea, {Catalin Lucian} and Larsen, {Truls Martin} and P. Christiansen and J{\o}rgensen, {C. E.}",

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doi = "10.1103/PhysRevC.83.044906",

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T1 - Rapidity dependence of deuteron production in central Au plus Au collisions at root s(NN)=200 GeV

AU - Arsene...[et al.], I.

AU - Bearden, Ian

AU - Bøggild, Hans

AU - Christensen, Christian Holm

AU - Gaardhøje, Jens Jørgen

AU - Nielsen, Børge Svane

AU - Søgaard, Carsten

AU - Ristea, Catalin Lucian

AU - Larsen, Truls Martin

AU - Christiansen, P.

AU - Jørgensen, C. E.

PY - 2011/4/18

Y1 - 2011/4/18

N2 - We have measured the distributions of protons and deuterons produced in the 20% most central Au+Au collisions at the Relativistic Heavy-Ion Collider (RHIC) (√sNN=200 GeV) over a very wide range of transverse and longitudinal momentum. Near midrapidity we have also measured the distribution of antiprotons and antideuterons. We present our results in the context of coalescence models. In particular, we extract the "homogeneity volume" and the average phase-space density for protons and antiprotons. Near central rapidity the coalescence parameter B2(pT) and the space-averaged phase-space density (pT) are very similar for both protons and antiprotons. For protons we see little variation of either B2(p T) or the space-averaged phase-space density as the rapidity increases from 0 to 3. However, these quantities depend strongly on p T at all rapidities. These results are in contrast to data from lower-energy collisions where the proton and antiproton phase-space densities are different at y=0, and both B2 and depend strongly on rapidity.

AB - We have measured the distributions of protons and deuterons produced in the 20% most central Au+Au collisions at the Relativistic Heavy-Ion Collider (RHIC) (√sNN=200 GeV) over a very wide range of transverse and longitudinal momentum. Near midrapidity we have also measured the distribution of antiprotons and antideuterons. We present our results in the context of coalescence models. In particular, we extract the "homogeneity volume" and the average phase-space density for protons and antiprotons. Near central rapidity the coalescence parameter B2(pT) and the space-averaged phase-space density (pT) are very similar for both protons and antiprotons. For protons we see little variation of either B2(p T) or the space-averaged phase-space density as the rapidity increases from 0 to 3. However, these quantities depend strongly on p T at all rapidities. These results are in contrast to data from lower-energy collisions where the proton and antiproton phase-space densities are different at y=0, and both B2 and depend strongly on rapidity.

U2 - 10.1103/PhysRevC.83.044906

DO - 10.1103/PhysRevC.83.044906

M3 - Journal article

SN - 2469-9985

VL - 83

SP - 044906

JO - Physical Review C

JF - Physical Review C

IS - 4

ER -

Rapidity dependence of deuteron production in central Au plus Au collisions at root s(NN)=200 GeV

Abstract

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