STAR Results on High Transverse Momentum, Heavy Flavor and Electromagnetic Probes
| dc.creator | Sanchez, Manuel Calderon de la Barca | |
| dc.date | 2007-01-25 | |
| dc.date.accessioned | 2026-07-07T11:44:18Z | |
| dc.date.available | 2026-07-07T11:44:18Z | |
| dc.description | We summarize here recent results from the STAR collaboration focusing on processes involving large momentum transfers. Measurements of angular correlations of di-hadrons are explored in both the pseudorapidity (eta) and azimuthal (phi) projections. In central Au+Au, an elongated structure is found in the eta projection which persists up to the highest measured pT. After quantifying the particle yield in this structure and subtracting it from the near-side yield, we observe that the remainder exhibits a behavior strikingly similar to that of the near-side yield in d+Au. For heavy flavor production, using electron-hadron correlations in p+p collisions, we obtain an estimate of the b-quark contribution to the non-photonic electrons in the pT region 3-6 GeV/c, and find it consistent with FONLL calculations. Together with the observed suppression of non-photonic electrons in Au+Au, this strongly suggests suppression of b-quark production in Au+Au collisions. We discuss results on the mid-rapidity Upsilon cross-section in p+p collisions. Finally, we present a proof-of-principle measurement of photon-hadron correlations in p+p collisions, paving the way for the tomographic study of the matter produced in central Au+Au via gamma-jet measurements. | |
| dc.description | 8 pages, 4 figures. Proceedings of "Quark Matter 2006", 19th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions | |
| dc.identifier | https://arxiv.org/abs/nucl-ex/0701059 | |
| dc.identifier | http://arxiv.org/abs/nucl-ex/0701059 | |
| dc.identifier | J.Phys.G34:S225-S232,2007 | |
| dc.identifier | doi:10.1088/0954-3899/34/8/S07 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/201556 | |
| dc.subject | Nuclear Experiment | |
| dc.title | STAR Results on High Transverse Momentum, Heavy Flavor and Electromagnetic Probes | |
| dc.type | text |