Towards an understanding of the RHIC single electron data
| dc.creator | Gossiaux, P. B. | |
| dc.creator | Aichelin, J. | |
| dc.date | 2008-02-18 | |
| dc.date | 2008-06-18 | |
| dc.date.accessioned | 2026-07-07T10:16:10Z | |
| dc.date.available | 2026-07-07T10:16:10Z | |
| dc.description | High transverse momentum ($p_T$) single non-photonic electrons which have been measured in the RHIC experiments come dominantly from heavy meson decay. The ratio of their $p_T$ spectra in pp and AA collisions ($R_{AA}(p_T)$) reveals the energy loss of heavy quarks in the environment created by AA collisions. Using a fixed coupling constant and the Debye mass ($m_D\approx gT$) as infrared regulator perturbative QCD (pQCD) calculations are not able to reproduce the data, neither the energy loss nor the azimuthal $(v_2)$ distribution. Employing a running coupling constant and replacing the Debye mass by a more realistic hard thermal loop (HTL) calculation we find a substantial increase of the collisional energy loss which brings the $v_2(p_T)$ distribution as well as $R_{AA}(p_T)$ to values close to the experimental ones without excluding a contribution from radiative energy loss. | |
| dc.description | Accepted for publication in Physical Review C | |
| dc.identifier | https://arxiv.org/abs/0802.2525 | |
| dc.identifier | http://arxiv.org/abs/0802.2525 | |
| dc.identifier | Phys.Rev.C78:014904,2008 | |
| dc.identifier | doi:10.1103/PhysRevC.78.014904 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/173411 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Towards an understanding of the RHIC single electron data | |
| dc.type | text |