PHENIX Measurement of High-pT Hadron-hadron and Photon-hadron Azimuthal Correlations
نویسنده
چکیده
High-pT hadron-hadron correlations have been measured with the PHENIX experiment in Cu + Cu and p + p collisions at √ sNN = 200 GeV. A comparison of the jet widths and yields between the two colliding systems allows us to study the medium effect on jets. We also present a first measurement of direct photon-hadron correlations in Au + Au and p + p collisions. We find that the near-side yields are consistent with zero in both systems. By comparing the jet yields on the away side, we observe a suggestion of the expected suppression of hadrons associated with photons in Au + Au collisions.
منابع مشابه
Direct Photons at RHIC
sNN = 200GeV with the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) is given. Direct-photon yields for pT & 4GeV/c and photon-hadron azimuthal correlations were determined with the aid of an electromagnetic calorimeter. By detecting ee pairs from the internal conversion of virtual photons direct-photon yields were measured between 1 . pT . 4GeV/c. In Au+Au collisions thermal p...
متن کاملMeasurement of high-pT hadrons at RHIC-PHENIX
Measurements from the RHIC experiments show a strong suppression in the yield of high-pT single hadrons and a clear reduction in strength of the di-jet signal in two-hadron azimuthal-angle correlation functions in central Au+Au collisions at RHIC. These measurements should provide direct information on the properties of the medium within which hard-scattered par-tons propagate. The PHENIX preli...
متن کاملMeasurement of high-pT hadrons at RHIC-PHENIX
Measurements from the RHIC experiments show a strong suppression in the yield of high-pT single hadrons and a clear reduction in strength of the di-jet signal in two-hadron azimuthal-angle correlation functions in central Au+Au collisions at RHIC. These measurements should provide direct information on the properties of the medium within which hard-scattered par-tons propagate. The PHENIX preli...
متن کاملHigh pT Probes of Dense Matter Created in Heavy Ion Collisions at RHIC
An overview of recent high-pT hadron and photon measurements at RHIC is presented with a focus on the evolution of hadron/photon production from intermediate pT (. 5 GeV/c) to high pT (> 10 GeV/c). Addressed topics include single high-pT hadron production, azimuthal anisotropy of π production, di-jet modification at intermediate pT and inclusive photon-hadron correlations. The understanding of ...
متن کاملAn investigation of using hump in the Cherenkov photon lateral distribution for Gamma-Hadron separation
Simulation of gamma and hadron showers in the energy range 100GeV- 25TeV has been carried out. For a big ideal Cherenkov light array, characteristics of lateral distribution of Cherenkov photon density have been studied. Results from this ideal detector are compared with those simulated for a real TUNKA- like array to investigate experimental potential of using existence of a hump in lateral di...
متن کامل