Physics & Astronomy Faculty and Staff Publications

Document Type

Article

Publication Date

6-21-2011

Abstract

We report on the event structure and double helicity asymmetry (ALL) of jet production in longitudinally polarized p+p collisions at √s=200  GeV. Photons and charged particles were measured by the PHENIX experiment at midrapidity |η|<0.35 with the requirement of a high-momentum (>2  GeV/c) photon in the event. Event structure, such as multiplicity, pT density and thrust in the PHENIX acceptance, were measured and compared with the results from the pythia event generator and the geant detector simulation. The shape of jets and the underlying event were well reproduced at this collision energy. For the measurement of jet ALL, photons and charged particles were clustered with a seed-cone algorithm to obtain the cluster pT sum (pTreco). The effect of detector response and the underlying events on pTreco was evaluated with the simulation. The production rate of reconstructed jets is satisfactorily reproduced with the next-to-leading-order and perturbative quantum chromodynamics jet production cross section. For 4

Publisher

American Physical Society

Publication Title

Physical Review D

Volume

84

Issue

1

First Page

1

Last Page

18

Language (ISO)

English

Sponsorship

American Physical Society

Comments

http://prd.aps.org/pdf/PRD/v84/i1/e012006

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