Rapidity dependence of antiproton-to-proton ratios in Au + Au collisions at √SNN = 130 GeV

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, K. Grotowski, K. Hagel, O. Hansen, A. Holm, A. K. Holme, H. Ito, E. Jacobsen & 34 others A. Jipa, J. I. Jørdre, F. Jundt, C. E. Jørgensen, T. Keutgen, E. J. Kim, T. Kozik, T. M. Larsen, J. H. Lee, Y. K. Lee, G. L. Løvhøiden, Z. Majka, A. Makeev, B. McBreen, M. Murray, J. Natowitz, B. S. Nielsen, K. Olchanski, J. Olness, D. Ouerdane, R. Planeta, F. Rami, D. Röhrich, B. H. Samset, S. J. Sanders, R. A. Sheetz, Z. Sosin, P. Staszel, T. F. Thorsteinsen, T. S. Tveter, F. Videbæk, R. Wada, A. Wieloch, I. S. Zgura

    Research output: Contribution to journalArticle

    Abstract

    The BRAHMS experiment measured the ratio of positive and negative pions and protons at midrapidities and forward rapidities. It was found that the pion ratios are close to unity as would be expected at these energies. However, it was observed that for central collisions at √SNN=130 GeV the ratio of antiprotons to protons is still significantly below unity at midrapidity and decreases towards forward rapidity. Furthermore, the reactions at the present energy evidence the highest antiparticle/particle ratios thus far observed in energetic nucleus-nucleus collisions.

    Original languageEnglish (US)
    Article number112305
    JournalPhysical Review Letters
    Volume87
    Issue number11
    StatePublished - Sep 10 2001

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    antiprotons
    unity
    pions
    antiparticles
    nuclei
    collisions
    protons
    energy

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Bearden, I. G., Beavis, D., Besliu, C., Blyakhman, Y., Brzychczyk, J., Budick, B., ... Zgura, I. S. (2001). Rapidity dependence of antiproton-to-proton ratios in Au + Au collisions at √SNN = 130 GeV. Physical Review Letters, 87(11), [112305].

    Rapidity dependence of antiproton-to-proton ratios in Au + Au collisions at √SNN = 130 GeV. / 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.; Grotowski, K.; Hagel, K.; Hansen, O.; Holm, A.; Holme, A. K.; Ito, H.; Jacobsen, E.; Jipa, A.; Jørdre, J. I.; Jundt, F.; Jørgensen, C. E.; Keutgen, T.; Kim, E. J.; Kozik, T.; Larsen, T. M.; Lee, J. H.; Lee, Y. K.; Løvhøiden, G. L.; Majka, Z.; Makeev, A.; McBreen, B.; Murray, M.; Natowitz, J.; Nielsen, B. S.; Olchanski, K.; Olness, J.; Ouerdane, D.; Planeta, R.; Rami, F.; Röhrich, D.; Samset, B. H.; Sanders, S. J.; Sheetz, R. A.; Sosin, Z.; Staszel, P.; Thorsteinsen, T. F.; Tveter, T. S.; Videbæk, F.; Wada, R.; Wieloch, A.; Zgura, I. S.

    In: Physical Review Letters, Vol. 87, No. 11, 112305, 10.09.2001.

    Research output: Contribution to journalArticle

    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, Grotowski, K, Hagel, K, Hansen, O, Holm, A, Holme, AK, Ito, H, Jacobsen, E, Jipa, A, Jørdre, JI, Jundt, F, Jørgensen, CE, Keutgen, T, Kim, EJ, Kozik, T, Larsen, TM, Lee, JH, Lee, YK, Løvhøiden, GL, Majka, Z, Makeev, A, McBreen, B, Murray, M, Natowitz, J, Nielsen, BS, Olchanski, K, Olness, J, Ouerdane, D, Planeta, R, Rami, F, Röhrich, D, Samset, BH, Sanders, SJ, Sheetz, RA, Sosin, Z, Staszel, P, Thorsteinsen, TF, Tveter, TS, Videbæk, F, Wada, R, Wieloch, A & Zgura, IS 2001, 'Rapidity dependence of antiproton-to-proton ratios in Au + Au collisions at √SNN = 130 GeV', Physical Review Letters, vol. 87, no. 11, 112305.
    Bearden IG, Beavis D, Besliu C, Blyakhman Y, Brzychczyk J, Budick B et al. Rapidity dependence of antiproton-to-proton ratios in Au + Au collisions at √SNN = 130 GeV. Physical Review Letters. 2001 Sep 10;87(11). 112305.
    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. ; Grotowski, K. ; Hagel, K. ; Hansen, O. ; Holm, A. ; Holme, A. K. ; Ito, H. ; Jacobsen, E. ; Jipa, A. ; Jørdre, J. I. ; Jundt, F. ; Jørgensen, C. E. ; Keutgen, T. ; Kim, E. J. ; Kozik, T. ; Larsen, T. M. ; Lee, J. H. ; Lee, Y. K. ; Løvhøiden, G. L. ; Majka, Z. ; Makeev, A. ; McBreen, B. ; Murray, M. ; Natowitz, J. ; Nielsen, B. S. ; Olchanski, K. ; Olness, J. ; Ouerdane, D. ; Planeta, R. ; Rami, F. ; Röhrich, D. ; Samset, B. H. ; Sanders, S. J. ; Sheetz, R. A. ; Sosin, Z. ; Staszel, P. ; Thorsteinsen, T. F. ; Tveter, T. S. ; Videbæk, F. ; Wada, R. ; Wieloch, A. ; Zgura, I. S. / Rapidity dependence of antiproton-to-proton ratios in Au + Au collisions at √SNN = 130 GeV. In: Physical Review Letters. 2001 ; Vol. 87, No. 11.
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    title = "Rapidity dependence of antiproton-to-proton ratios in Au + Au collisions at √SNN = 130 GeV",
    abstract = "The BRAHMS experiment measured the ratio of positive and negative pions and protons at midrapidities and forward rapidities. It was found that the pion ratios are close to unity as would be expected at these energies. However, it was observed that for central collisions at √SNN=130 GeV the ratio of antiprotons to protons is still significantly below unity at midrapidity and decreases towards forward rapidity. Furthermore, the reactions at the present energy evidence the highest antiparticle/particle ratios thus far observed in energetic nucleus-nucleus collisions.",
    author = "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 K. Grotowski and K. Hagel and O. Hansen and A. Holm and Holme, {A. K.} and H. Ito and E. Jacobsen and A. Jipa and J{\o}rdre, {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 L{\o}vh{\o}iden, {G. L.} 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. Planeta and F. Rami and D. R{\"o}hrich and Samset, {B. H.} and Sanders, {S. J.} 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.}",
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    TY - JOUR

    T1 - Rapidity dependence of antiproton-to-proton ratios in Au + Au collisions at √SNN = 130 GeV

    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 - Grotowski, K.

    AU - Hagel, K.

    AU - Hansen, O.

    AU - Holm, A.

    AU - Holme, A. K.

    AU - Ito, H.

    AU - Jacobsen, E.

    AU - Jipa, A.

    AU - Jørdre, 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. L.

    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 - Planeta, R.

    AU - Rami, F.

    AU - Röhrich, D.

    AU - Samset, B. H.

    AU - Sanders, S. J.

    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 - 2001/9/10

    Y1 - 2001/9/10

    N2 - The BRAHMS experiment measured the ratio of positive and negative pions and protons at midrapidities and forward rapidities. It was found that the pion ratios are close to unity as would be expected at these energies. However, it was observed that for central collisions at √SNN=130 GeV the ratio of antiprotons to protons is still significantly below unity at midrapidity and decreases towards forward rapidity. Furthermore, the reactions at the present energy evidence the highest antiparticle/particle ratios thus far observed in energetic nucleus-nucleus collisions.

    AB - The BRAHMS experiment measured the ratio of positive and negative pions and protons at midrapidities and forward rapidities. It was found that the pion ratios are close to unity as would be expected at these energies. However, it was observed that for central collisions at √SNN=130 GeV the ratio of antiprotons to protons is still significantly below unity at midrapidity and decreases towards forward rapidity. Furthermore, the reactions at the present energy evidence the highest antiparticle/particle ratios thus far observed in energetic nucleus-nucleus collisions.

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    M3 - Article

    VL - 87

    JO - Physical Review Letters

    JF - Physical Review Letters

    SN - 0031-9007

    IS - 11

    M1 - 112305

    ER -