File:PhysRevLett.122.222301.pdf
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DescriptionPhysRevLett.122.222301.pdf |
English: We introduce a new “quantile” analysis strategy to study the modification of jets as they traverse through a droplet of quark-gluon plasma. To date, most jet modification studies have been based on comparing the jet properties measured in heavy-ion collisions to a proton-proton baseline at the same reconstructed jet transverse momentum (pT). It is well known, however, that the quenching of jets from their interaction with the medium leads to a migration of jets from higher to lower pT, making it challenging to directly infer the degree and mechanism of jet energy loss. Our proposed quantile matching procedure is inspired by (but not reliant on) the approximate monotonicity of energy loss in the jet pT. In this strategy, jets in heavy-ion collisions ordered by pT are viewed as modified versions of the same number of highest-energy jets in proton-proton collisions, and the fractional energy loss as a function of jet pT is a natural observable (QAA). Furthermore, despite nonmonotonic fluctuations in the energy loss, we use an event generator to validate the strong correlation between the pT of the parton that initiates a heavy-ion jet and the pT of the vacuum jet which corresponds to it via the quantile procedure (pquantT). We demonstrate that this strategy both provides a complementary way to study jet modification and mitigates the effect of pT migration in heavy-ion collisions. |
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https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.122.222301 https://doi.org/10.1103/PhysRevLett.122.222301 |
Author | Jasmine Brewer, José Guilherme Milhano, and Jesse Thaler |
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Short title | Sorting Out Quenched Jets |
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Image title | doi:10.1103/PhysRevLett.122.222301 url:https://doi.org/10.1103/PhysRevLett.122.222301 |
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Software used | Published by the American Physical Society |
Conversion program | Acrobat Distiller 10.1.16 (Windows) |
Encrypted | no |
Page size | 612 x 792 pts (letter) |
Version of PDF format | 1.4 |