[Brahms-l] Fw: New PHENIX paper on \omega production in p+p and d+Au collisions

Well , Phenix slow down yesterday, but here is another paper.

Flemming

--------------------------------------------
Flemming Videbaek
Physics Department 
Bldg 510-D
Brookhaven National Laboratory
Upton, NY11973

Sent: Saturday, November 11, 2006 6:02 PM
Subject: New PHENIX paper on \omega production in p+p and d+Au collisions


> Dear Wit, Tim, Flemming and Peter:
> 
> In one week's time the PHENIX Collaboration will submit to Physical Review
> Letters a new paper on \omega production in p+p and d+Au collisions at 200
> GeV. The title and abstract are included below.
> 
> Best regards,
> 
> Bill
> 
> ----------------------------------------------------------------------------
> ----------------------
> 
> 
> TITLE: Production of \omega mesons at Large Transverse Momenta in p+p and
> d+Au Collisions at\sqrt{s_{{NN}} = 200 GeV
> 
> 
> ABSTRACT: 
> 
> The PHENIX experiment at RHIC has measured the invariant cross section for
> \omega-meson production
> at mid-rapidity in the transverse momentum range 2.5 < pT < 9.25 GeV/c in
> p+p and d+Au
> collisions at \sqrt{s_{{NN}} = 200 GeV. Measurements in two decay channels
> (\omega --> \pi^0 \pi^+ \pi^- and \omega --> \pi^0 \gamma) yield consistent
> results, and the reconstructed \omega mass agrees with the accepted value
> within the pT range of the measurements. The \omega/\pi^0 ratio is found to
> be 0:85 \pm 0.05(stat.) \pm 0.09(syst.) and 0.94 \pm 0.08(stat.) \pm
> 0.12(syst.) in p+p and d+Au collisions respectively, independent of pT . The
> nuclear modification factor R_dA is 1.03 \pm 0.12(stat.) \pm 0.21(syst.) and
> 0.83 \pm 0.21 (stat.) \pm 0.17(syst.) in minimum bias and central (0-20%)
> d+Au collisions respectively.
>
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