Results from the BRAHMS experiment at RHIC

D. Röhrich; I. G. Bearden; D. Beavis; C. Besliu; Y. Blyakhman; J. Brzychczyk; B. Budick; H. Bøggild; C. Chasman; C. H. Christensen; P. Christiansen; J. Cibor; R. Debbe; J. J. Gaardhøje; M. Germinario; K. Grotowski; K. Hagel; O. Hansen; A. Holm; A. K. Holme; H. Ito; E. Jakobsen; A. Jipa; J. I. Jordre; F. Jundt; C. E. Jørgensen; T. Keutgen; E. J. Kim; T. Kozik; T. M. Larsen; J. H. Lee; Y. K. Lee; G. Løvhøiden; Z. Majka; A. Makeev; B. McBreen; M. Murray; J. Natowitz; B. S. Nielsen; K. Olchanski; J. Olness; D. Ouerdane; R. Płaneta; F. Rami; D. Röhrich; B. Samset; D. Sandberg; S. Sanders; R. A. Sheetz; Z. Sosin; P. Staszel; T. F. Thorsteinsen; T. S. Tveter; F. Videbæk; R. Wada; A. Wieloch; I. S. Zgura

doi:10.1088/0954-3899/28/7/338

Results from the BRAHMS experiment at RHIC

D. Röhrich, I. G. Bearden, D. Beavis, C. Besliu, Y. Blyakhman, J. Brzychczyk, B. Budick, H. Bøggild, C. Chasman, C. H. Christensen, P. Christiansen, J. Cibor, R. Debbe, J. J. Gaardhøje, M. Germinario, K. Grotowski, K. Hagel, O. Hansen, A. Holm, A. K. HolmeH. Ito, E. Jakobsen, A. Jipa, J. I. Jordre, F. Jundt, C. E. Jørgensen, T. Keutgen, E. J. Kim, T. Kozik, T. M. Larsen, J. H. Lee, Y. K. Lee, G. Løvhøiden, Z. Majka, A. Makeev, B. McBreen, M. Murray, J. Natowitz, B. S. Nielsen, K. Olchanski, J. Olness, D. Ouerdane, R. Płaneta, F. Rami, D. Röhrich, B. Samset, D. Sandberg, S. Sanders, R. A. Sheetz, Z. Sosin, P. Staszel, T. F. Thorsteinsen, T. S. Tveter, F. Videbæk, R. Wada, A. Wieloch, I. S. Zgura

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Abstract

Results from the BRAHMS Collaboration for the inaugural physics run with the relativistic heavy ion collider (RHIC), Au + Au collisions at √s _NN = 130 GeV in the late summer of 2000, and some results of the very first data from the summer of 2001 at √s_NN = 200 GeV are presented. Here the main focus is on the determination of the pseudorapidity distribution of charged particles as a function of collision centrality and on the measurement of the antiproton to proton and the K^- to K ⁺ ratios as a function of rapidity. The pseudorapidity density at midrapidity reaches dN(ch)/dη = 553 ± 36 for the most central collisions (0-5%) at √s_NN = 130 GeV; the corresponding number for a higher energy is dN(ch)/dη = 632 ± 36, demonstrating an increase in multiplicity of about 14%. The measured antiproton/proton ratios peak at midrapidity around N(p̄)/N(p) = 0.64 ± 0.06 and drop to 0. 41 ± 0.04 at y ≈ 2 for √s_NN = 130 GeV reactions; the K^- to K⁺ ratios are 0.90 ± 0.06 (y ≈ 0) and 0. 83 ± 0.1 (y ≈ 2.5).

Original language	English (US)
Article number	338
Pages (from-to)	1841-1851
Number of pages	11
Journal	Journal of Physics G: Nuclear and Particle Physics
Volume	28
Issue number	7
DOIs	https://doi.org/10.1088/0954-3899/28/7/338
State	Published - Jul 2002

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1088/0954-3899/28/7/338

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Röhrich, D., Bearden, I. G., Beavis, D., Besliu, C., Blyakhman, Y., Brzychczyk, J., Budick, B., Bøggild, H., Chasman, C., Christensen, C. H., Christiansen, P., Cibor, J., Debbe, R., Gaardhøje, J. J., Germinario, M., Grotowski, K., Hagel, K., Hansen, O., Holm, A., ... Zgura, I. S. (2002). Results from the BRAHMS experiment at RHIC. Journal of Physics G: Nuclear and Particle Physics, 28(7), 1841-1851. Article 338. https://doi.org/10.1088/0954-3899/28/7/338

Röhrich, D, Bearden, IG, Beavis, D, Besliu, C, Blyakhman, Y, Brzychczyk, J, Budick, B, Bøggild, H, Chasman, C, Christensen, CH, Christiansen, P, Cibor, J, Debbe, R, Gaardhøje, JJ, Germinario, M, Grotowski, K, Hagel, K, Hansen, O, Holm, A, Holme, AK, Ito, H, Jakobsen, E, Jipa, A, Jordre, JI, Jundt, F, Jørgensen, CE, Keutgen, T, Kim, EJ, Kozik, T, Larsen, TM, Lee, JH, Lee, YK, Løvhøiden, G, Majka, Z, Makeev, A, McBreen, B, Murray, M, Natowitz, J, Nielsen, BS, Olchanski, K, Olness, J, Ouerdane, D, Płaneta, R, Rami, F, Röhrich, D, Samset, B, Sandberg, D, Sanders, S, Sheetz, RA, Sosin, Z, Staszel, P, Thorsteinsen, TF, Tveter, TS, Videbæk, F, Wada, R, Wieloch, A & Zgura, IS 2002, 'Results from the BRAHMS experiment at RHIC', Journal of Physics G: Nuclear and Particle Physics, vol. 28, no. 7, 338, pp. 1841-1851. https://doi.org/10.1088/0954-3899/28/7/338

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title = "Results from the BRAHMS experiment at RHIC",

abstract = "Results from the BRAHMS Collaboration for the inaugural physics run with the relativistic heavy ion collider (RHIC), Au + Au collisions at √s NN = 130 GeV in the late summer of 2000, and some results of the very first data from the summer of 2001 at √sNN = 200 GeV are presented. Here the main focus is on the determination of the pseudorapidity distribution of charged particles as a function of collision centrality and on the measurement of the antiproton to proton and the K- to K + ratios as a function of rapidity. The pseudorapidity density at midrapidity reaches dN(ch)/dη = 553 ± 36 for the most central collisions (0-5%) at √sNN = 130 GeV; the corresponding number for a higher energy is dN(ch)/dη = 632 ± 36, demonstrating an increase in multiplicity of about 14%. The measured antiproton/proton ratios peak at midrapidity around N({\=p})/N(p) = 0.64 ± 0.06 and drop to 0. 41 ± 0.04 at y ≈ 2 for √sNN = 130 GeV reactions; the K- to K+ ratios are 0.90 ± 0.06 (y ≈ 0) and 0. 83 ± 0.1 (y ≈ 2.5).",

author = "D. R{\"o}hrich and Bearden, {I. G.} and D. Beavis and C. Besliu and Y. Blyakhman and J. Brzychczyk and B. Budick and H. B{\o}ggild and C. Chasman and Christensen, {C. H.} and P. Christiansen and J. Cibor and R. Debbe and Gaardh{\o}je, {J. J.} and M. Germinario and K. Grotowski and K. Hagel and O. Hansen and A. Holm and Holme, {A. K.} and H. Ito and E. Jakobsen and A. Jipa and Jordre, {J. I.} and F. Jundt and J{\o}rgensen, {C. E.} and T. Keutgen and Kim, {E. J.} and T. Kozik and Larsen, {T. M.} and Lee, {J. H.} and Lee, {Y. K.} and G. L{\o}vh{\o}iden and Z. Majka and A. Makeev and B. McBreen and M. Murray and J. Natowitz and Nielsen, {B. S.} and K. Olchanski and J. Olness and D. Ouerdane and R. P{\l}aneta and F. Rami and D. R{\"o}hrich and B. Samset and D. Sandberg and S. Sanders and Sheetz, {R. A.} and Z. Sosin and P. Staszel and Thorsteinsen, {T. F.} and Tveter, {T. S.} and F. Videb{\ae}k and R. Wada and A. Wieloch and Zgura, {I. S.}",

year = "2002",

month = jul,

doi = "10.1088/0954-3899/28/7/338",

language = "English (US)",

volume = "28",

pages = "1841--1851",

journal = "Journal of Physics G: Nuclear and Particle Physics",

issn = "0954-3899",

publisher = "IOP Publishing Ltd.",

number = "7",

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TY - JOUR

T1 - Results from the BRAHMS experiment at RHIC

AU - Röhrich, D.

AU - Bearden, I. G.

AU - Beavis, D.

AU - Besliu, C.

AU - Blyakhman, Y.

AU - Brzychczyk, J.

AU - Budick, B.

AU - Bøggild, H.

AU - Chasman, C.

AU - Christensen, C. H.

AU - Christiansen, P.

AU - Cibor, J.

AU - Debbe, R.

AU - Gaardhøje, J. J.

AU - Germinario, M.

AU - Grotowski, K.

AU - Hagel, K.

AU - Hansen, O.

AU - Holm, A.

AU - Holme, A. K.

AU - Ito, H.

AU - Jakobsen, E.

AU - Jipa, A.

AU - Jordre, J. I.

AU - Jundt, F.

AU - Jørgensen, C. E.

AU - Keutgen, T.

AU - Kim, E. J.

AU - Kozik, T.

AU - Larsen, T. M.

AU - Lee, J. H.

AU - Lee, Y. K.

AU - Løvhøiden, G.

AU - Majka, Z.

AU - Makeev, A.

AU - McBreen, B.

AU - Murray, M.

AU - Natowitz, J.

AU - Nielsen, B. S.

AU - Olchanski, K.

AU - Olness, J.

AU - Ouerdane, D.

AU - Płaneta, R.

AU - Rami, F.

AU - Röhrich, D.

AU - Samset, B.

AU - Sandberg, D.

AU - Sanders, S.

AU - Sheetz, R. A.

AU - Sosin, Z.

AU - Staszel, P.

AU - Thorsteinsen, T. F.

AU - Tveter, T. S.

AU - Videbæk, F.

AU - Wada, R.

AU - Wieloch, A.

AU - Zgura, I. S.

PY - 2002/7

Y1 - 2002/7

N2 - Results from the BRAHMS Collaboration for the inaugural physics run with the relativistic heavy ion collider (RHIC), Au + Au collisions at √s NN = 130 GeV in the late summer of 2000, and some results of the very first data from the summer of 2001 at √sNN = 200 GeV are presented. Here the main focus is on the determination of the pseudorapidity distribution of charged particles as a function of collision centrality and on the measurement of the antiproton to proton and the K- to K + ratios as a function of rapidity. The pseudorapidity density at midrapidity reaches dN(ch)/dη = 553 ± 36 for the most central collisions (0-5%) at √sNN = 130 GeV; the corresponding number for a higher energy is dN(ch)/dη = 632 ± 36, demonstrating an increase in multiplicity of about 14%. The measured antiproton/proton ratios peak at midrapidity around N(p̄)/N(p) = 0.64 ± 0.06 and drop to 0. 41 ± 0.04 at y ≈ 2 for √sNN = 130 GeV reactions; the K- to K+ ratios are 0.90 ± 0.06 (y ≈ 0) and 0. 83 ± 0.1 (y ≈ 2.5).

AB - Results from the BRAHMS Collaboration for the inaugural physics run with the relativistic heavy ion collider (RHIC), Au + Au collisions at √s NN = 130 GeV in the late summer of 2000, and some results of the very first data from the summer of 2001 at √sNN = 200 GeV are presented. Here the main focus is on the determination of the pseudorapidity distribution of charged particles as a function of collision centrality and on the measurement of the antiproton to proton and the K- to K + ratios as a function of rapidity. The pseudorapidity density at midrapidity reaches dN(ch)/dη = 553 ± 36 for the most central collisions (0-5%) at √sNN = 130 GeV; the corresponding number for a higher energy is dN(ch)/dη = 632 ± 36, demonstrating an increase in multiplicity of about 14%. The measured antiproton/proton ratios peak at midrapidity around N(p̄)/N(p) = 0.64 ± 0.06 and drop to 0. 41 ± 0.04 at y ≈ 2 for √sNN = 130 GeV reactions; the K- to K+ ratios are 0.90 ± 0.06 (y ≈ 0) and 0. 83 ± 0.1 (y ≈ 2.5).

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UR - http://www.scopus.com/inward/citedby.url?scp=0012263489&partnerID=8YFLogxK

U2 - 10.1088/0954-3899/28/7/338

DO - 10.1088/0954-3899/28/7/338

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AN - SCOPUS:0012263489

SN - 0954-3899

VL - 28

SP - 1841

EP - 1851

JO - Journal of Physics G: Nuclear and Particle Physics

JF - Journal of Physics G: Nuclear and Particle Physics

IS - 7

M1 - 338

ER -

Results from the BRAHMS experiment at RHIC

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