[Brahms-l] Fw: New PHENIX paper on single electrons in 200 GeV p+p collisions

FYI
----------------------------------------------------------------
Flemming Videbaek
Physics Department
Brookhaven National Laboratory


Subject: New PHENIX paper on single electrons in 200 GeV p+p collisions


> Dear Wit, Tim, Flemming and Sam:
>
> In one week's time the PHENIX Collaboration will submit to Physical Review
> Letters a manuscript on single electron measurements in 200 GeV p+p
> collisions. The title and abstract appear below.
>
> Best regards,
>
> Bill
>
> Title: Single Electrons from Heavy Flavor Decays in p+p Collisions at
> \sqrt{s} = 200 GeV.
>
> Abstract: The invariant differential cross section for inclusive electron
> production in p+p collisions at \sqrt{s} = 200 GeV have been measured by
the
> PHENIX experiment at the Relativistic Heavy Ion Collider over the
transverse
> momentum range 0.4 \le p_T \le 5.0 GeV/c at midrapidity (|\eta| \le 0.35).
> The contribution to the inclusive electron spectrum from semileptonic
decays
> of hadrons carrying heavy flavor, i.e., charm quarks or, at high p_T,
bottom
> quarks, is determined via three independent methods. The resulting
electron
> spectrum for heavy flavor decays is compared to recent leading and
> next-to-leading order perturbative QCD calculations. The total cross
section
> of charm quark-antiquark pair production is determined as \sigma_{c-cbar}
=
> 0.92 \pm 0.15(stat) \pm 0.54(sys.) mb.
>


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