Pion correlations as a function of atomic mass in heavy ion collisions [electronic resource].
- Published
- Washington, D.C : United States. Dept. of Energy. Office of Energy Research, 1989.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description
- Pages: (120 pages) : digital, PDF file
- Additional Creators
- Lawrence Berkeley National Laboratory, United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access
- Free-to-read Unrestricted online access
- Summary
- The method of two pion interferometry was used to obtain source-size and lifetime parameters for the pions produced in heavy ion collisions. The systems used were 1.70 {center dot} A GeV ⁵⁶Fe + Fe, 1.82 {center dot} A GeV ⁴°Ar + KCl and 1.54 {center dot} A GeV ⁹³Nb + Nb, allowing for a search for dependences on the atomic number. Two acceptances (centered, in the lab., at ∼ 0° and 45°) were used for each system, allowing a search for dependences on the viewing angle. The correlation functions were calculated by comparing the data samples to background (or reference) samples made using the method of event mixing, where pions from different events are combined to produce a data sample in which the Bose-Einstein correlation effect is absent. The effect of the correlation function on the background samples is calculated, and a method for weighting the events to remove the residual correlation effect is presented. The effect of the spectrometer design on the measured correlation functions is discussed, as are methods for correcting for these effects during the data analysis. 58 refs., 39 figs., 18 tabs.
- Report Numbers
- E 1.99:lbl-28149
lbl-28149 - Subject(s)
- Other Subject(s)
- Iron
- Iron 56 Reactions
- Niobium
- Niobium 93 Reactions
- Pions
- Correlation Functions
- Potassium Chlorides
- Argon 40 Reactions
- Heavy Ion Reactions
- Mass Number
- Particle Identification
- Alkali Metal Compounds
- Bosons
- Charged-Particle Reactions
- Chlorides
- Chlorine Compounds
- Elementary Particles
- Elements
- Functions
- Hadrons
- Halides
- Halogen Compounds
- Mesons
- Metals
- Nuclear Reactions
- Potassium Compounds
- Pseudoscalar Mesons
- Transition Elements
- Note
- Published through SciTech Connect.
11/26/1989.
"lbl-28149"
"DE90006086"
Chacon, A.D. - Funding Information
- AC03-76SF00098
FG03-87ER40323
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