Published April 11, 2006 | Version v1
Journal article Metadata-only

Multidimensional HBT correlations in pp-bar collisions at √(s) 630 GeV

Creators

  • 1. Department of Physics, University of Stellenbosch, 7602 Stellenbosch (South Africa)
  • 2. Institut fuer Hochenergiephysik, Nikolsdorfergasse 18, A-1050 Vienna (Austria)
  • 3. Institute for Maritime Technology, 7995 Simonstown (South Africa)

Description

We analyse second moments R2 of like-sign pion pairs in the two-dimensional (qL,qT) and three-dimensional (qO,qS,qL) decompositions of the three-momentum difference. Conventional fit parametrisations such as gaussian, exponential, power-law and Edgeworth fail miserably, while more elaborate ones such as Levy do well but fail to yield a unique best-fit solution. A two-component model using a hard cut to separate small- and large-scale parts appears possible but not compelling. In all cases, the data exhibits a strong and hitherto unexplained peak at small momentum differences which exceeds current fits

Additional details

Identifiers

DOI
10.1063/1.2197470;

Publishing Information

Journal Title
AIP Conference Proceedings
Journal Volume
828
Journal Issue
1
Journal Page Range
p. 559-565
ISSN
0094-243X
CODEN
APCPCS

Conference

Title
35. internationals symposium on multiparticle dynamics; Workshop on particle correlations and femtoscopy
Dates
9-17 Aug 2005
Place
Kromeriz (Czech Republic)

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
37102900
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CORRELATIONS; GEV RANGE; HEAVY ION REACTIONS; HYDRODYNAMIC MODEL; MATHEMATICAL SOLUTIONS; MULTIPLE PRODUCTION; PIONS; PROTON-ANTIPROTON INTERACTIONS; THREE-DIMENSIONAL CALCULATIONS; TWO-DIMENSIONAL CALCULATIONS
Descriptors DEC
BARYON-BARYON INTERACTIONS; BOSONS; ELEMENTARY PARTICLES; ENERGY RANGE; HADRON-HADRON INTERACTIONS; HADRONS; INTERACTIONS; MATHEMATICAL MODELS; MESONS; NUCLEAR REACTIONS; NUCLEON-ANTINUCLEON INTERACTIONS; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PRODUCTION; PSEUDOSCALAR MESONS; STATISTICAL MODELS; THERMODYNAMIC MODEL

Optional Information

Notes
(c) 2006 American Institute of Physics