New PHOBOS results on event-by-event fluctuations

B. Alver, B. B. Back, M. D. Baker, M. Ballintijn, D. S. Barton, R. R. Betts, A. A. Bickley, R. Bindel, A. Budzanowski, W. Busza, A. Carroll, Z. Chai, V. Chetluru, M. P. Decowski, E. García, T. Gburek, N. George, K. Gulbrandsen, S. Gushue, C. HalliwellJ. Hamblen, G. A. Heintzelman, C. Henderson, I. Harnarine, D. J. Hofman, R. S. Hollis, R. Hołyński, B. Holzman, A. Iordanova, E. Johnson, J. L. Kane, N. Khan, W. Kucewicz, P. Kulinich, C. M. Kuo, W. Li, W. T. Lin, C. Loizides, S. Manly, A. C. Mignerey, R. Nouicer, A. Olszewski, R. Pak, I. C. Park, C. Reed, L. P. Remsberg, M. Reuter, E. Richardson, C. Roland, G. Roland, L. Rosenberg, J. Sagerer, P. Sarin, P. Sawicki, I. Sedykh, W. Skulski, C. E. Smith, M. A. Stankiewicz, P. Steinberg, G. S.F. Stephans, A. Sukhanov, A. Szostak, J. L. Tang, M. B. Tonjes, A. Trzupek, C. Vale, G. J. Van Nieuwenhuizen, S. S. Vaurynovich, R. Verdier, G. I. Veres, P. Walters, E. Wenger, D. Willhelm, F. L.H. Wolfs, B. Wosiek, K. Woźniak, A. H. Wuosmaa, S. Wyngaardt, B. Wysłouch

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations


We present new results from the PHOBOS experiment at RHIC on event-by-event fluctuations of particle multiplicities and angular distributions in nucleus-nucleus collisions at RHIC. Our data for Au+Au collisions at s NN=200GeV show that at a level of 10-4 or less, no rare, large-amplitude fluctuations in the total multiplicity distributions or the shape of the pseudorapidity distributions are observed. We however find significant short-range multiplicity correlations in these data, that can be described as particle production in clusters. In Cu+Cu collisions, we observe large final-state azimuthal anisotropies ν2. A common scaling behavior for Cu+Cu and Au+Au for these anisotropies emerges when fluctuations in the initial state geometry are taken into account.

Original languageEnglish
Title of host publicationMULTIPARTICLE DYNAMICS
Subtitle of host publicationXXXV International Symposium on Multiparticle Dynamics; and Workshop on Particle Correlations and Femtoscopy
Number of pages6
StatePublished - 11 Apr 2006
EventMULTIPARTICLE DYNAMICS: XXXV International Symposium on Multiparticle Dynamics and the Workshop on Particle Correlations and Femtoscopy - Kromeriz, Czech Republic
Duration: 9 Aug 200517 Aug 2005

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


ConferenceMULTIPARTICLE DYNAMICS: XXXV International Symposium on Multiparticle Dynamics and the Workshop on Particle Correlations and Femtoscopy
Country/TerritoryCzech Republic


  • Collective flow
  • Event-by-event fluctuations


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