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arXiv · 0902.2189

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

Elena Bruna
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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.

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Elena Bruna. 2009-02-12. Study of jet fragmentation in p+p collisions at 200 GeV in the STAR experiment. https://doi.org/10.1140/epjc%2Fs10052-009-0951-0

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