| THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS |
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Jet Energy Shift due to Non-Perturbative QCD Effects in p+p Collisions Studied with PYTHIA |
| LI Han-Lin1,2**, ZHANG Ben-Wei2,3**, WANG En-Ke2 |
1College of Science, Wuhan University of Science and Technology, Wuhan 430065
2Key Laboratory of Quark & Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan 430079
3Nuclear Science Division, MS 70R0319, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA |
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| Cite this article: |
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LI Han-Lin, ZHANG Ben-Wei, WANG En-Ke 2013 Chin. Phys. Lett. 30 051301 |
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Abstract Utilizing PYTHIA we study non-pertubative QCD effects to jet transverse momentum shift in hadronic collisions at the RHIC and the LHC. The dependences of non-perturbative effects such as hadronization corrections and underlying event effect on jet radius R, colliding energy, color factor, transverse momentum are investigated by numerical simulations. Hadronization corrections give a negative contribution to the jet energy shift and its magnitude decreases with jet ET and colliding energy √s as well as jet radius R. However, the underlying event effect gives a positive contribution to the jet energy shift and its contribution increases with jet radius and √s. Hadronization and underlying event effect offset each other and could be canceled completely at a specific jet radius dubbed RNP=0. It is observed that RNP=0 decreases with colliding energy √s and is larger for a gluon jet than a quark jet at any fixed ET.
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Received: 20 December 2012
Published: 31 May 2013
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| PACS: |
13.87.-a
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(Jets in large-Q2 scattering)
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12.38.Mh
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(Quark-gluon plasma)
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24.85.+p
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(Quarks, gluons, and QCD in nuclear reactions)
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25.75.-q
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(Relativistic heavy-ion collisions (collisions induced by light ions studied to calibrate relativistic heavy-ion collisions should be classified under both 25.75.-q and sections 13 or 25 appropriate to the light ions))
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