Abstract
The properties of jets produced in collisions at are measured using the method of two-particle correlations. The trigger particle is a leading particle from a large transverse momentum jet while the associated particle comes from either the same jet or the away-side jet. Analysis of the angular width of the near-side peak in the correlation function determines the jet-fragmentation transverse momentum . The extracted value, , is constant with respect to the trigger particle transverse momentum, and comparable to the previous lower measurements. The width of the away-side peak is shown to be a convolution of with the fragmentation variable, , and the partonic transverse momentum, . The is determined through a combined analysis of the measured inclusive and associated spectra using jet-fragmentation functions measured in collisions. The final extracted values of are then determined to also be independent of the trigger particle transverse momentum, over the range measured, with value of .
24 More- Received 12 May 2006
DOI:https://doi.org/10.1103/PhysRevD.74.072002
©2006 American Physical Society