dorsal/arxiv
View SchemaJet modification in three dimensional fluid dynamics at next-to-leading twist
| Authors | A. Majumder, C. Nonaka, S. A. Bass |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0703019 |
| URL | https://arxiv.org/abs/nucl-th/0703019 |
| DOI | 10.1103/PhysRevC.76.041902 |
| Journal | Phys.Rev.C76:041902,2007 |
Abstract
The modification of the single inclusive spectrum of high transverse momentum ($p_T $) pions emanating from an ultra-relativistic heavy-ion collision is investigated. The deconfined sector is modelled using a full three dimensional (3-D) ideal fluid dynamics simulation. Energy loss of high $p_T$ partons and the ensuing modification of their fragmentation is calculated within perturbative QCD at next-to-leading twist, where the magnitude of the higher twist contribution is modulated by the entropy density extracted from the 3-D fluid dynamics simulation. The nuclear modification factor ($R_{AA}$) for pions with a $p_T \geq 8$ GeV as a function of centrality as well as with respect to the reaction plane is calculated. The magnitude of contributions to the differential $R_{AA}$ within small angular ranges, from various depths in the dense matter is extracted from the calculation and demonstrate the correlation of the length integrated density and the $R_{AA}$ from a given depth. The significance of the mixed and hadronic phase to the overall magnitude of energy loss are explored.
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"abstract": "The modification of the single inclusive spectrum of high transverse momentum\n($p_T $) pions emanating from an ultra-relativistic heavy-ion collision is\ninvestigated. The deconfined sector is modelled using a full three dimensional\n(3-D) ideal fluid dynamics simulation. Energy loss of high $p_T$ partons and\nthe ensuing modification of their fragmentation is calculated within\nperturbative QCD at next-to-leading twist, where the magnitude of the higher\ntwist contribution is modulated by the entropy density extracted from the 3-D\nfluid dynamics simulation. The nuclear modification factor ($R_{AA}$) for pions\nwith a $p_T \\geq 8$ GeV as a function of centrality as well as with respect to\nthe reaction plane is calculated. The magnitude of contributions to the\ndifferential $R_{AA}$ within small angular ranges, from various depths in the\ndense matter is extracted from the calculation and demonstrate the correlation\nof the length integrated density and the $R_{AA}$ from a given depth. The\nsignificance of the mixed and hadronic phase to the overall magnitude of energy\nloss are explored.",
"arxiv_id": "nucl-th/0703019",
"authors": [
"A. Majumder",
"C. Nonaka",
"S. A. Bass"
],
"categories": [
"nucl-th",
"hep-ph",
"nucl-ex"
],
"doi": "10.1103/PhysRevC.76.041902",
"journal_ref": "Phys.Rev.C76:041902,2007",
"title": "Jet modification in three dimensional fluid dynamics at next-to-leading twist",
"url": "https://arxiv.org/abs/nucl-th/0703019"
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