From: Flemming Videbaek (videbaek@sgs1.hirg.bnl.gov)
Date: Thu Jun 12 2003 - 08:43:14 EDT
A different kind of Star paper. You can expect many papers in the near terms future, apperently thay have a backlog of several Flemming ------------------------------------------------------ Flemming Videbaek Physics Department Brookhaven National Laboratory tlf: 631-344-4106 fax 631-344-1334 e-mail: videbaek@bnl.gov ----- Original Message ----- From: "Tim Hallman" <hallman@bnl.gov> To: <tkirk@bnl.gov>; <zajc@nevis.columbia.edu>; <busza@mit.edu>; <videbaek@bnl.gov> Sent: Wednesday, June 11, 2003 10:12 PM Subject: Release of STAR Paper on proton/anti-proton production | Title and Abstract: | | | Dear Tom, Bill, Wit, and Flemming, | | This message is to let you know that STAR intends to submit a paper | to PRL on the centrality dependence of proton/anti-proton production | at roots_NN = 130 GeV in about 1 week's time. (This will be submitted | at least a day after the d+Au paper on the 18th to avoid any confusion). | The title and abstract are enclosed. | | | Sincerely, | | Tim | | | ------------------- | | Rapidity and Centrality Dependence of Proton and Anti-proton | Production from $^{197}$Au+$^{197}$Au Collisions at $\rts = 130$~GeV | | We report on the rapidity and centrality dependence of proton | and anti-proton transverse mass distributions from | $^{197}$Au+$^{197}$Au collisions at $\rts = 130$~GeV as measured by | the STAR experiment at RHIC. Our results are from the rapidity and | transverse momentum range of $|y|<0.5$ and 0.35 $<p_t<$1.00~GeV/$c$. | For both protons and anti-protons, transverse mass distributions | become more convex from peripheral to central collisions | demonstrating characteristics of collective expansion. The | measured rapidity distributions and the mean transverse momenta | versus rapidity are flat within $|y|<0.5$. Comparisons of our data | with results from model calculations indicate that in order to obtain | a consistent picture of the proton(anti-proton) yields and transverse | mass distributions the possibility of pre-hadronic collective expansion | may have to be taken into account.
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