Eur. Phys. J. C (2009) 62: 133-137
https://doi.org/10.1140/epjc/s10052-009-0951-0

Regular Article - Experimental Physics

Study of jet fragmentation in p+p collisions at 200 GeV in the STAR experiment

Physics Department, Yale University, 272 Whitney Avenue, New Haven, CT, 06520, USA

^* e-mail: elena.bruna@yale.edu

Received: 30 September 2008
Published online: 24 February 2009

Abstract

The measurement of jet fragmentation functions in p+p collisions at 200 GeV is of great interest because it provides a baseline to study jet quenching in heavy-ion collisions. It is expected that jet quenching in nuclear matter modifies the jet energy and multiplicity distributions, as well as the jet hadrochemical composition. Therefore, a systematic study of the fragmentation functions for charged hadrons and identified particles is a goal both in p+p and Au+Au collisions at RHIC. Studying fragmentation functions for identified particles is interesting in p+p by itself because it provides a test of NLO calculations at RHIC energies. We present a systematic comparison of jet energy spectra and fragment distributions using different jet-finding algorithms in p+p collisions in STAR. Fragmentation functions of charged and neutral strange particles are also reported for different jet energies.