I am drowing in e-mails; I do though not think this was forwarded to the Collaborations- The paper is for PRC Rapid Comm. not PRL Flemming ------------------------------------------------------ Flemming Videbaek Physics Department Brookhaven National Laboratory tlf: 631-344-4106 fax 631-344-1334 e-mail: videbaek@bnl.gov ----- Original Message ----- From: "Wit Busza" <busza@mit.edu> To: <tkirk@bnl.gov>; <hallman@bnl.gov>; <videbaek@bnl.gov>; <zajc@columbia.edu> Cc: <phobos@mit.edu> Sent: Tuesday, June 11, 2002 9:59 PM Subject: Phobos publication on particle ratios at 200GeV > Dear Colleagues: > I am pleased to be able to advise you that the Phobos collaboration has > completed its internal review of a paper on particle ratios at 200GeV. We > plan to > submit it to PRL on Tuesday June 18. Below you will find the abstract of > the paper. > All the best, > Wit > > Ratios of charged antiparticles to particles near mid-rapidity in > Au+Au collisions at sqrt(s_NN) = 200 GeV > > The ratios of charged antiparticles to particles have been obtained for > pions, kaons and protons near mid-rapidity in central Au+Au collisions > at sqrt(s_NN) = 200 GeV. > Ratios of <pi->/<pi+> = 1.025 +/- 0.006 (stat.) +/- 0.018 (syst.), > <K->/<K+> = 0.95 +/- 0.03 (stat.) +/- 0.03 (syst.) and > <\overline{p}>/<p> = 0.74 +/- 0.02 (stat.) +/- 0.03 (syst.)} have > been observed. > The <K->/<K+> and <\overline{p}>/<p> ratios are consistent with a > baryochemical potential \mu_B of 26 MeV, roughly a factor of 2 smaller > than in sqrt(s_NN) = 130 GeV collisions. The data are compared to results > from lower energies and model calculations. Our accurate measurements of > the particle ratios impose stringent constraints on current and future > models dealing with baryon production and transport. > >
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