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Title

The landscape of particle production: results from PHOBOS

Author(s)

Steinberg, P.;  Back, B. B.;  Baker, M. D.;  Ballintijn, M.;  Barton, D. S.;  Becker, B.;  Betts, R. R.;  Bickley, A. A.;  Bindel, R.;  Budzanowski, A.;  Busza, W.;  Carroll, A.;  Decowski, M. P.;  Garcia, E.;  Gburek, T.;  George, N.;  Gulbrandsen, K.;  Gushue, S.;  Halliwell, C.;  Hamblen, J.;  Harrington, A. S.;  Heintzelman, G. A.;  Henderson, C.;  Hofman, D. J.;  Hollis, R. S.;  Holynski, R.;  Holzman, B.;  Iordanova, A.;  Johnson, E.;  Kane, J. L.;  Katzy, J.;  Khan, N.;  Kucewicz, W.;  Kulinich, P.;  Kuo, C. M.;  Lee, J. W.;  Lin, W. T.;  Manly, S.;  McLeod, D.;  Mignerey, A. C.;  Nouicer, R.;  Olszewski, A.;  Pak, R.;  Park, I. C.;  Pernegger, H.;  Reed, C.;  Remsberg, L. P.;  Reuter, M.;  Roland, C.;  Roland, G.;  Rosenberg, L.;  Sagerer, J.;  Sarin, P.;  Sawicki, P.;  Sedykh, I.;  Skulski, W.;  Smith, C. E.;  Stephans, G. S. F.;  Sukhanov, A.;  Tang, J. L.;  Tonjes, M. B.;  Trzupek, A.;  Vale, C.;  Van Nieuwenhuizen, G. J.;  Verdier, R.;  Veres, G. I.;  Wolfs, F. L. H.;  Wosiek, B.;  Wozniak, K.;  Wuosmaa, A. H.;  Wyslouch, B.;  Zhang, J.

Abstract

Recent results from the PHOBOS experiment at RHIC are presented, both from Au+Au collisions from the 2001 run and p+p and d+Au collisions from 2003. The centrality dependence of the total charged-particle multiplicity in p+p and d+Au shows features, such as Npart scaling and limiting fragmentation, similar to p+A collisions at lower energies. Multiparticle physics in Au+Au is found to be local in (pseudo)rapidity, both when observed by HBT correlations and by forward–backward pseudorapidity correlations. The shape of elliptic flow in Au+Au, measured over the full range of pseudorapidity, appears to have a very weak centrality dependence. Identified particle ratios in d+Au reactions show little difference between the shape of proton and anti-proton spectra, while the absolute yields show an approximate mT scaling. Finally, results on RdAu as a function of pseudorapidity show that this ratio decreases monotonically with η, even between 0.2 < η < 1.4.

Publication type

Journal article

Source

Journal of Physics G: Nuclear and Particle Physics, Vol. 30, no. 8 (Aug 2004), pp. S683-S691

Publication year

2004

FOR Code(s)

0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics

Keyword(s)

Collisions;  PHOBOS

Publisher

Institute of Physics Publishing

ISSN

0954-3899

Publisher URL

http://dx.doi.org/10.1088/0954-3899/30/8/006

Copyright

Copyright © 2004 IOP Publishing. The accepted manuscript is reproduced in accordance with the copyright policy of the publisher.

Full text

Peer reviewed