[Brahms-l] Fwd: STAR new paper on longitudinal spin transfer

FYI



Flemming videbaek
videbaek @ bnl.gov
Brookhaven National Lab
Physics Department
Bldg 510D
Upton, NY 11973

phone: 631-344-4106
cell: 631-681-1596





> Subject: STAR new paper on longitudinal spin transfer
>
> Dear Barbara, Wit, Flemming and Steve,
>
> I am pleased to announce that the STAR collaboration will submit to  
> Physical Review D, Rapid Communications,  in one week's time,  a new  
> paper on longitudinal spin transfer to Lambda and anti-Lambda  
> Hyperons in Polarized Proton-Proton Collisions at RHIC. The title  
> and abstract are included below.
>
> Best regards,
>
> Nu Xu
>
> -----------------------------------------------------------------------
> Nu Xu
>
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> -----------------------------------------------------------------------
> *-- 
> = 
> = 
> = 
> ===================================================================--*
>
> Title: "Longitudinal Spin Transfer to Lambda and anti-Lambda  
> Hyperons in Polarized Proton-Proton Collisions at √s  = 200 GeV"
>
> Abstract: "The longitudinal spin transfer, DLL, from high energy  
> polarized protons to  lambda and anti-lambda hyperons has been  
> measured for the first time in proton-proton collisions at √s =  
> 200GeV with the STAR detector at RHIC. The measurements cover  
> pseudorapidity, eta, in the range |eta| < 1.2 and transverse  
> momenta, pT, up to 4GeV/c. The longitudinal spin transfer is found  
> to be DLL = −0.03+-0.13(stat)+-0.04(syst) for inclusive Lambda and  
> DLL = −0.12 +- 0.08(stat) +- 0.03(syst) for inclusive anti-Lambda  
> hyperons with <eta> = 0.5 and <pT> = 3.7GeV/c. The dependence on eta  
> and pT is presented."



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