[Brahms-l] Fw: New STAR PRC on K* Resonance Production

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

e-mail: videbaek@bnl.gov
phone: 631-344-4106

Sent: Wednesday, December 01, 2004 11:26 PM
Subject: New STAR PRC on K* Resonance Production


> Dear Tom, Bill, Flemming, and Wit,
>
> I am pleased to announce STAR's intention to submit a new
> paper on:
>
> "K(892)* Resonance Production in Au+Au and p+p Collisions
> at Roots_NN = 200 GeV at RHIC"
>
> to Physical Review C one week from today. The title and
> abstract for the paper are enclosed.
>
>                        Sincerely,
>
>                             Tim
>
>
>
>
>
> Title:     "K(892)* Resonance Production in Au+Au and p+p Collisions
>             at Roots_NN = 200 GeV at RHIC"
>
> Abstract:   The short-lived K(892)* resonance provides an efficient tool
>             to probe the properties of the hot and dense medium produced
>             in relativistic heavy-ion collisions. We report measurements
>             of K* in roots_NN = 200 GeV Au+Au and p+p collisions
> reconstructed
>             via its hadronic decay channels k(892)*(zero) --> K pi and
>             K(892)*(+/-) --> Kzero_short pi+/- using the STAR detector at
>             RHIC. The K*(zero) mass has been studied as a function of pt
>             in minimum bias p+p and central Au+Au collisions. The K*
>             pt spectra from minimum bias p+p interactions and for Au+Au
>             collisions in different centralities are presented. The K*/K
>             ratios for all centralities in Au+Au collisions are found to
be
>             significantly lower than the ratio in minimum bias p+p
> collisions,
>             indicating the importance of hadronic interactions between
>             chemical and kinetic freeze-outs. The nuclear modification
> factor
>             of K* at intermediate pt is similar to that of Kzero_short,
but
>             different from lambda. This establishes a baryon-meson effect
>             over a mass effect in the particle production at intermediate
>             pt (2 < pt .le. 4 GeV/c). A significant non-zero K*_zero
> elliptic
>             flow (v2) is observed in Au+Au collisions and compared to the
>             Kzero_short and lambda v2.
>


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