skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Recent results from Phobos.

Abstract

No abstract prepared.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); National Science Foundation (NSF); FOR
OSTI Identifier:
919319
Report Number(s):
ANL/PHY/CP-116188
TRN: US0806255
DOE Contract Number:
DE-AC02-06CH11357
Resource Type:
Conference
Resource Relation:
Conference: 21st Winter Workshop on Nuclear Dynamics; Feb 5-12, 2005; Breckenridge, CO
Country of Publication:
United States
Language:
ENGLISH
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BROOKHAVEN RHIC; COLLISIONS; MULTIPLICITY; PARTICLE PRODUCTION

Citation Formats

Alver, B., Back, B. B., Baker, M. D., Ballintinj, M., Barton, D. S., Physics, Massachysetts Inst. of Tech., and BNL. Recent results from Phobos.. United States: N. p., 2006. Web.
Alver, B., Back, B. B., Baker, M. D., Ballintinj, M., Barton, D. S., Physics, Massachysetts Inst. of Tech., & BNL. Recent results from Phobos.. United States.
Alver, B., Back, B. B., Baker, M. D., Ballintinj, M., Barton, D. S., Physics, Massachysetts Inst. of Tech., and BNL. Sun . "Recent results from Phobos.". United States. doi:.
@article{osti_919319,
title = {Recent results from Phobos.},
author = {Alver, B. and Back, B. B. and Baker, M. D. and Ballintinj, M. and Barton, D. S. and Physics and Massachysetts Inst. of Tech. and BNL},
abstractNote = {No abstract prepared.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:
  • A selection of experimental results from the PHOBOS Collaboration relevant for probing high-energy nuclear collisions with high transverse momentum particles is presented. The inclusive yields of charged particles and comparisons between nuclear and elementary collisions already reveal a large amount of parton energy loss in the hot and dense medium created in heavy ion collisions. Remarkable scaling and factorization features are observed, unifying the data taken at various collision energies, centralities and nuclear sizes. To further analyze the nature of the energy loss, a measurement of pseudorapidity ({Delta}{eta}) and azimuthal angle ({Delta}{phi}) correlations between high transverse momentum charged hadrons (p{submore » T} > 2.5 GeV/c) and all associated charged particles is presented at both short-range (small {Delta}{eta}) and long-range (large {Delta}{eta}) over a continuous detector acceptance covering -4 < {Delta}{eta} < 2. Various near- and away-side features of the correlation structure are discussed as a function of centrality in Au+Au collisions at {radical}s{sub NN} = 200 GeV. The results provide new information about the longitudinal ({Delta}{eta}) extent of the near-side 'ridge' structure, first observed by the STAR Collaboration over a narrower {eta} range. In central Au+Au collisions the ridge structure extends to at least {Delta}{eta} = 4, and its strength completely diminishes as collisions become more peripheral.« less
  • The PHOBOS detector is one of four heavy ion experiments at the Relativistic Heavy Ion Collider at Brookhaven National Laboratory. In this paper we will review some of the results of PHOBOS from the data collected in p+p, d+Au and Au+Au collisions at nucleon-nucleon center-of-mass energies up to 200 GeV. Evidence is found of the formation of a very high energy density and highly interactive system, which can not be described in terms of hadrons, and has a relatively low baryon density. There is evidence that the system formed is thermalized to a certain degree. Scaling with the number ofmore » participants and extended longitudinal scaling behavior are also observed in distributions of produced charged particles.« less
  • The PHOBOS experiment at RHIC has measured the charged-particle density dN/d{eta} at mid-rapidity for central Au+Au collisions at center of mass energies of {radical}s{sub NN} = 56, and 130 GeV. We deduce that dN/d{eta} = 408 {+-} 12(stat) {+-}30(syst) and 555 {+-} 12(stat) {+-} 35(syst) for collision energies of 56, and 130, GeV, respectively. These numbers suggest energy densities that are some 70% higher than have been achieved in any heavy-ion collisions previously studied, and also 25-40% higher than nucleon-nucleon collisions at comparable center of mass energies.
  • No abstract prepared.