S-L Blyth et al 2007 J. Phys. G: Nucl. Part. Phys. 34 271 doi:10.1088/0954-3899/34/2/008
A cone jet-finding algorithm for heavy-ion collisions at LHC energies
S-L Blyth1,2, M J Horner1,2, T Awes3, T Cormier4, H Gray1,2, J L Klay5, S R Klein1, M van Leeuwen1, A Morsch6, G Odyniec1 and A Pavlinov4
Show affiliationsStandard jet-finding techniques used in elementary particle collisions have not been successful in the high track density of heavy-ion collisions. This paper describes a modified cone-type jet-finding algorithm developed for the complex environment of heavy-ion collisions. The primary modification to the algorithm is the evaluation and subtraction of the large background energy, arising from uncorrelated soft hadrons, in each collision. A detailed analysis of the background energy and its event-by-event fluctuations has been performed on simulated data, and a method developed to estimate the background energy inside the jet cone from the measured energy outside the cone on an event-by-event basis. The algorithm has been tested using Monte Carlo simulations of Pb+Pb collisions at 
for the ALICE detector at the LHC. The algorithm can reconstruct jets with a transverse energy of 50 GeV and above with an energy resolution of ~30%.
- PACS
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25.75.Nq Quark deconfinement, quark–gluon plasma production, and phase transitions
27.80.+w 190(less-than-or-equal-to)A(less-than-or-equal-to)219
- Subjects
- Dates
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Issue 2 (February 2007)
Received 15 September 2006
Published 11 December 2006
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A cone jet-finding algorithm for heavy-ion collisions at LHC energies
S-L Blyth et al 2007 J. Phys. G: Nucl. Part. Phys. 34 271
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