FYI ---------------------------------------------------------------- Flemming Videbaek Physics Department Brookhaven National Laboratory e-mail: videbaek@bnl.gov phone: 631-344-4106 ----- Original Message ----- From: "W.A. Zajc" <zajc@nevis.columbia.edu> To: "'Aronson, Samuel'" <samaronson@bnl.gov>; "'Busza, Wit'" <busza@mit.edu>; "'Hallman, Timothy J'" <hallman@bnl.gov>; "'Videbaek, Flemming'" <videbaek@bnl.gov> Sent: Saturday, October 08, 2005 10:49 AM Subject: New PHENIX paper on electron spectra and R_AA > Dear Sam, Wit, Tim and Flemming: > > In one week's time, PHENIX plans to submit a paper to Physical Review > Letters on the energy spectra and R_AA for non-photonic electrons. Title and > abstract are included below. > > Best regards, > > Bill > > -------------------------------------------------------------------------- -- > --------------------- > > > Title: Nuclear Modification of Electron Spectra and Implications for > Heavy Quark Energy Loss in Au+Au Collisions at \sqrts_NN = 200 GeV > > > Abstract: > > The PHENIX experiment has measured mid-rapidity transverse momentum spectra > ($0.4 < p_T < 5. $~GeV/$c$) of electrons as a function of centrality in > Au+Au collisions at \sqrts_NN = 200 GeV. > Contributions from photon conversions and from light hadron decays, mainly > Dalitz decays of $\pi^ $ and $\eta$ mesons, were removed. The resulting > non-photonic electron spectra are primarily due to the semi-leptonic decays > of hadrons carrying heavy quarks. Nuclear modification factors were > determined by comparison to non-photonic electrons in p+p collisions. A > significant suppression of electrons at high p_T is observed in central > Au+Au collisions, indicating substantial energy loss of heavy quarks. > _______________________________________________ Brahms-l mailing list Brahms-l@lists.bnl.gov http://lists.bnl.gov/mailman/listinfo/brahms-lReceived on Sat Oct 8 11:05:37 2005
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