[Brahms-l] Fwd: STAR new paper on light nuclei production and v2 in Au+Au collisions

FYI



> Subject: STAR new paper on light nuclei production and v2 in Au+Au  
> collisions
>
> Dear Barbara, Wit, Flemming and Steve,
>
> I am pleased to announce that the STAR collaboration will submit to  
> Physics Letters B,  in one week's time,  a new paper on on light  
> nuclei production and v2 in Au+Au collisions at RHIC. The title and  
> abstract are included below.
>
> Best regards,
>
> Nu Xu
>
> -----------------------------------------------------------------------
> Nu Xu
>
> Build. 510A, I-181	    Phone:  (631)344-3471
> P.O. Box 5000, BNL	    Fax:       (631)344-4206
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> -----------------------------------------------------------------------
>
> Title: "Yields and elliptic flow of $d$($\bar{d}) and 3$^He$(3$^ 
> \bar{He}$) in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV"
>
> Abstract: "We present the $p_{T}$ spectra, elliptic flow ($v_2$) and  
> coalescence parameters $B_{2}$ for $d$, $\overline{d}$ ($1<p_{T}<4$  
> GeV/c)
> and $B_{3}$ for $^{3}He$, $\overline{^{3}He}$ ($2<p_{T}<6$ GeV/c)  
> produced at mid-rapidity in Au+Au collisions at $\sqrt{s_{_{NN}}} =  
> 200$
> GeV. The results are measured in the STAR experiment at RHIC. The  
> light nuclei spectra show softer $p_T$ distributions than  
> calculations from a blast-wave model in which the parameters were  
> fixed from pion, Kaon and proton $v_2$($p_T$) and $p_T$  
> distributions. The coalescence volume is found to track with pion  
> HBT results for different collision geometries. The $v_2$  
> measurement for $d(\overline{d})$ as a function of transverse  
> momentum $p_T$ is found to follow an approximate atomic mass number  
> ($A$) scaling while that of $^{3}He(\overline{^{3}He})$ deviates  
> slightly from the scaling. A negative $v_{2}$ has been observed for $ 
> \overline{d}$ at low $p_{T}$, consistent with large radial flow in Au 
> +Au collisions."

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