[Brahms-l] Fw: New STAR paper on proton-lambda correlations

FYI
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Flemming Videbaek
Physics Department
Brookhaven National Laboratory

e
Subject: New STAR paper on proton-lambda correlations


> Dear Sam, Bill, Flemming, and Wit,
>
> I am pleased to announce STAR's intention to submit a new
> paper on "Proton-lambda correlations in central Au+Au collisions
> at sqrt{NN}= 200GeV" to Phys Rev C  one week from today. The
> title and abstract for the paper are enclosed.
>
>                    Sincerely,
>
>                     Tim
>
>
> "Proton-lambda correlations in central Au+Au collisions at sqrt (NN)=200
GeV"
>
> We report on p-Lambda, p-Lambda bar, p bar-Lambda and p bar-Lambda bar
> correlation functions constructed in central Au-Au collisiona at sqrt(NN)=
> 200GeV by the STAR experiment at RHIC.  The proton and lambda source
> size is inferred from the p-Lambda and p bar-Lambda bar correlation
functions.
> They are found to be smaller than the pion source size also measured by
the
> STAR detector.  This could be a consequence of the collision fireball's
> collective expansion. The p bar-Lambda bar and p bar-Lambda correlations,
> which are measured for the first time, exhibit a large anti-correlation.
Annihilation
> channels and/or a negative real part of the spin-averaged scattering
length must be
> included in the final-state interactions calculation to reproduce the
measured
> correlation function.
>

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