Abstract
The STAR collaboration at the BNL Relativistic Heavy-Ion Collider (RHIC) reports measurements of the inclusive yield of nonphotonic electrons, which arise dominantly from semileptonic decays of heavy flavor mesons, over a broad range of transverse momenta () in , , and collisions at . The nonphotonic electron yield exhibits an unexpectedly large suppression in central collisions at high , suggesting substantial heavy-quark energy loss at RHIC. The centrality and dependences of the suppression provide constraints on theoretical models of suppression.
- Received 11 July 2006
DOI:https://doi.org/10.1103/PhysRevLett.98.192301
©2007 American Physical Society