[Brahms-l] Fw: New PHENIX Paper on Single Muons at Forward Rapidity

FYI
Subject: New PHENIX Paper on Single Muons at Forward Rapidity


> Dear Wit, Tim, Flemming and Peter:
> 
> In one week's time PHENIX will submit to Physical Review D a new paper on
> single muona at forward rapidity in p+p collisions at 200 GeV. Please find
> the title and abstract below.
> 
> Best regards,
> 
> Bill
> 
> 
> TITLE: Measurement of Single Muons at Forward Rapidity in $p+p$
> Collisions at $\sqrt{s} = 200$\,GeV and Implications for Charm Production
> 
> 
> ABSTRACT:
> 
> Muon production at forward rapidity ($1.5 \le |\eta| \le 1.8$) has
> been measured by the PHENIX experiment over the transverse momentum
> range $1 \le p_T \le 3$\,GeV/c in $\sqrt{s} = 200$\,GeV $p+p$
> collisions at the Relativistic Heavy Ion Collider. After statistically
> subtracting contributions from light hadron decays an excess remains which
> is attributed to the semileptonic decays of hadrons carrying heavy
> flavor, {\it i.e.}  charm quarks or, at high $p_T$, bottom quarks. The
> resulting muon spectrum from heavy flavor decays is compared to PYTHIA
> and a next-to-leading order perturbative QCD calculation. PYTHIA is
> used to determine the charm quark spectrum that would produce the
> observed muon excess. The corresponding differential cross
> section for charm quark production at forward rapidity is determined
> to be $d\sigma_{c\bar{c}}/dy|_{y=1.6} = 0.243 \pm 0.013 {\rm (stat.)}
> \pm 0.105 {\rm (data~syst.)}~^{+0.049}_{-0.087}{\rm
> (PYTHIA~syst.)}$\,mb.
>
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