Bose-Einstein correlations of charged pion pairs in Au + Au collisions at s(NN)**(1/2) = 200-GeV

= 200 GeV. The Bertsch-Pratt radius parameters were determined as a function of the transverse momentum of the pair and as a function of the centrality of the collision. Using the \it{full} Coulomb correction, the ratio

R_{\rm out}/R_{\rm side}

is smaller than unity for

<k_{\rm T}>

from 0.25 to 1.2 GeV/c and for all measured centralities. However, using recently developed partial Coulomb correction methods, we find that

R_{\rm out}/R_{\rm side}

is 0.8-1.1 for the measured

<k_{\rm T}>

range, and approximately constant at unity with the number of participants.

Note:

326 authors, 6 pages text, 3 figures, RevTeX 4. Submitted to PRL. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html

25.75.Dw
25.75.Gz
nucleus nucleus: colliding beams
scattering: heavy ion
gold
charged particle: multiple production
correlation: two-pion
correlation: Bose-Einstein
pi: formation
Hanbury-Brown-Twiss effect

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