[Brahms-l] Fwd: New PHENIX paper on neutral meson spectra in p+p collisions

FYI

:

> From: Barbara Jacak <jacak_at_skipper.physics.sunysb.edu>
> Date: May 11, 2010 10:17:02 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 neutral meson spectra in p+p collisions
>
> 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. D
> on the topic indicated in the subject line. Please find the
> title and abstract below.
>
> best regards,
> Barbara
>
> -----------------------------------------------------
> Title:
> Measurement of neutral mesons in p + p collisions at
> √s = 200 GeV and scaling properties of hadron production
>
> Abstract:
> The PHENIX experiment at the Relativistic Heavy Ion Collider has  
> measured
> the invariant differential cross section for production of K^0_S ,  
> \omega,
> \eta prime, and \phi mesons in p + p collisions at √s = 200 GeV.  
> Measurements
> \omega and \phi production in different decay channels give  
> consistent results.
> New results for the \phi are in agreement with previously published  
> data and
> extend the measured pT coverage. The spectral shapes of all hadron  
> transverse
> momentum distributions measured by PHENIX are well described by a  
> Tsallis
> distribution functional form with only two parameters, n and T,  
> determining the
> high-pT and characterizing the low-pT regions of the spectra,  
> respectively. The
> values of these parameters are very similar for all analyzed meson  
> spectra, but
> with a lower parameter T extracted for protons. The integrated  
> invariant cross
> sections calculated from the fitted distributions are found to be
> consistent with
> existing measurements and with statistical model predictions.



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