Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/55873

Title

Results from the PHOBOS experiment at RHIC

Author(s)

Back, B. B.;  Baker, M. D.;  Barton, D. S.;  Betts, R. R.;  Bindel, R.;  Budzanowski, A.;  Busza, W.;  Carroll, A.;  Decowski, M. P.;  Garcia, E.;  George, N.;  Gulbrandsen, K.;  Gushue, S.;  Halliwell, C.;  Heintzelman, G. A.;  Henderson, C.;  Hofman, D. J.;  Holynski, R.;  Holzman, B.;  Johnson, E.;  Kane, J. L.;  Katzy, J.;  Khan, N.;  Kucewicz, W.;  Kulinich, P.;  Lin, W. T.;  Manly, S.;  McLeod, D.;  Michalowski, J.;  Mignerey, A. C.;  Mulmenstadt, J.;  Nouicer, R.;  Olszewski, A.;  Pak, R.;  Park, I. C.;  Pernegger, H.;  Reed, C.;  Remsberg, L. P.;  Reuter, M.;  Roland, C.;  Roland, G.;  Rosenberg, L.;  Sarin, P.;  Sawicki, P.;  Skulski, W.;  Steadman, S. G.;  Steinberg, P.;  Stephans, G. S. F.;  Stodulski, M.;  Sukhanov, A.;  Tang, J. L.;  Teng, R.;  Trzupek, A.;  Vale, C.;  Van Nieuwenhuizen, G. J.;  Verdier, R.;  Wadsworth, B.;  Wolfs, F. L. H.;  Wosiek, B.;  Wozniak, K.;  Wuosmaa, A. H.;  Wyslouch, B.

Abstract

Au+Au collisions have been studied at center-of-mass energies of sqrt[SNN]=56 and 130 GeV using the PHOBOS detector at RHIC. Charged particle multiplicities have been measured as a function of center-of-mass energy, centrality and pseudo-rapidity, η. A total of 4100 ± 400 charged particles are observed in the pseudo-rapidity range -5.4 < η < 5.4 for the most central collisions. A strong elliptic flow signal is seen in peripheral collisions at η = 0. The measurement of an antiprotons to protons ratio of p̄/p = 0.60 ± 0.04(stat) ± 0.06(syst) indicates that a nearly baryon-free region is created at midrapidity.

Publication type

Journal article

Source

Acta Physica Hungarica A: Heavy Ion Physics, Vol. 15, no. 3-4 (Nov 2002), pp. 225-235

Publication year

2002

FOR Code(s)

0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics

Keyword(s)

Antiparticle;  Charged particle multiplicity;  Charged particles;  Elliptic flow;  Heavy-ion collisions;  Particle ratio;  PHOBOS;  Relativistic

Publisher

Akademiai Kiado

ISSN

1219-7580

Publisher URL

http://www.akkrt.hu/

Copyright

Copyright © 2002.

Peer reviewed