[Brahms-l] Fwd: New PHENIX Paper on Kaon Interferometry in Au+Au at 200 GeV

FYI

Begin forwarded message:

> From: Barbara Jacak <jacak_at_skipper.physics.sunysb.edu>
> Date: March 21, 2009 11:32:01 AM EDT
> To: Nu Xu <NXu_at_lbl.gov>, Wit Busza <busza_at_mit.edu>, "Videbaek,  
> Flemming" <videbaek_at_bnl.gov>, "Vigdor, Steven" <vigdor_at_bnl.gov>
> Subject: New PHENIX Paper on Kaon Interferometry in Au+Au at 200 GeV
>
> Dear Nu, Wit, Flemming and Steve,
>
>    I am happy to announce that in one week's time, the
> PHENIX Collaboration will submit a paper to Phys. Rev.
> Lett. on kaon interferometry in Au+Au at 200 GeV
>
> Please find the title and abstract below.
>
> best regards,
> Barbara
>
> --
> Title:
>
> Kaon interferometric probes of space-time evolution
> in Au+Au collisions at sqrt(s_NN) = 200 GeV
>
> Abstract:
>
> Bose-Einstein correlations of charged kaons are used to probe
> Au+Au collisions at sqrt(s_NN) = 200 GeV, and compared to
> charged pion probes which have a larger hadronic scattering
> cross section. Three dimensional Gaussian source radii are
> extracted, along with a one-dimensional kaon emission source
> function. The three centrality dependences of the three Gaussian
> radii are well described by a single linear function of N_part^(1/3)
> with zero intercept. Imaging analysis shows a deviation from a
> Gaussian tail at r > 10 fm, although the bulk emission at lower
> radius is well-described by a Gaussian. The presence of a
> non-Gaussian tail in the kaon source reaffirms that the particle
> emission region in a heavy ion collision is extended, and that
> similar measurements with pions are not solely due to the decay
> of long-lived resonances.

Flemming videbaek
videbaek @ bnl.gov
Brookhaven National Lab
631-344-4106
cell: 631-681-1596



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