From: Flemming Videbaek (videbaek@sgs1.hirg.bnl.gov)
Date: Mon Jul 14 2003 - 12:31:28 EDT
FYI I would guess it is now on the list server. /fv ------------------------------------------------------ Flemming Videbaek Physics Department Brookhaven National Laboratory tlf: 631-344-4106 fax 631-344-1334 e-mail: videbaek@bnl.gov ----- Original Message ----- From: "William A. Zajc" <zajc@nevis.columbia.edu> To: "'Thomas Kirk'" <tkirk@bnl.gov>; "'Wit Busza '" <busza@mit.edu>; "'Hallman, Timothy J'" <hallman@bnl.gov>; "'Videbaek, Flemming'" <videbaek@bnl.gov> Sent: Wednesday, July 02, 2003 3:51 PM Subject: New PHENIX paper on identified particles from Run-1 | Dear Friends: | | PHENIX intends to submit a comprehensive paper on our Run-1 identified | particle spectra in one week. Please find the title and abstract below. | The results have been presented many times at various conferences. | | Best regards, | | Bill | | ======================================================================== | ========================== | | Single Identified Hadron Spectra from $\sqrt{s_{NN}}= 130$ GeV Au+Au | Collisions at RHIC | | Transverse momentum spectra and yields of hadrons are measured by the | PHENIX collaboration in Au + Au collisions at $\sqrt{s_{NN}} = 130$ GeV | at RHIC. The time-of-flight resolution allows identification of pions | to transverse momenta of 2 GeV/c and protons and antiprotons to 4 | GeV/c. The yield of pions rises approximately linearly with the | number of nucleons participating in the collision, while the number of | kaons, protons, and antiprotons increases more rapidly. The shape of | the momentum distribution changes between peripheral and central | collisions. Simultaneous analysis of all the $p_T$ spectra indicates | radial collective expansion, consistent with | predictions of hydrodynamic models. Hydrodynamic analysis of the | spectra shows that the expansion velocity increases with collision | centrality and collision energy. This expansion boosts the particle | momenta, causing the yield from soft processes to exceed that for | hard to large transverse momentum, perhaps as large as 3 GeV/c. |
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