[Brahms-l] Fw: Release of PHENIX paper on eta's and pi0's

FYI

/fv

Subject: Release of PHENIX paper on eta's and pi0's


> Dear Wit, Tim, Flemming and Sam:
> 
> I am pleased to announce that the PHENIX Collaboration will submit in one
> week's time to Physical Review Letters a new manuscript on high pT eta's and
> pi0's in Au+Au collisions at 200 GeV. The title and abstract are enclosed
> below.
> 
> Best regards,
> 
> Bill
> 
> ----------------------------------------------------------------------------
> -------------
> 
> Title: Common suppression pattern of eta and pi0 mesons at high transverse
> momentum in Au+Au collisions at \sqrt{s_{NN}}=200 GeV
> 
> Abstract: Inclusive transverse momentum spectra of eta mesons have been
> measured within pT = 2-10 GeV/c at midrapidity by the PHENIX experiment in
> Au+Au collisions at \sqrt{s_{NN}} = 200 GeV. In central Au+Au the eta yields
> are significantly suppressed compared to peripheral Au+Au, d+Au and p+p
> yields scaled by the corresponding number of nucleon-nucleon collisions. The
> magnitude, centrality and pT dependence of the suppression is common, within
> errors, for eta and pi0. The ratio of eta to pi0 spectra at high pT amounts
> to 0.40 < R(eta/pi0) < 0.48 for the three systems in agreement with the
> world average measured in hadronic and nuclear reactions and, at large
> scaled momentum, in e+e collisions.
>
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