[Brahms-l] Fw: STAR Paper on Identified Hadron Spectra in pp and dAu

FYI
--------------------------------------------
Flemming Videbaek
Physics Department
Bldg 510-D
Brookhaven National Laboratory
Upton, NY11973

phone: 631-344-4106
fax:        631-344-1334
e-mail: videbaek @ bnl.gov
----- Original Message ----- 
From: "Hallman, Timothy J" <hallman@bnl.gov>
To: <Aronsons@bnl.gov>; "Zajc, William" <zajc@nevis.columbia.edu>; "Wit Busza" <busza@MIT.EDU>; "Videbaek, Flemming" 
<videbaek@bnl.gov>
Sent: Wednesday, January 18, 2006 1:54 PM
Subject: STAR Paper on Identified Hadron Spectra in pp and dAu


> Dear Sam, Bill, Flemming, and Wit:
>
> It is my pleasure to announce STAR's intention to submit the
> following paper to Physics Letters B in one week's time.
>
> Identified hadron spectra at large transverse momentum
>         in p+p and d+Au collisions at sqrt(s_NN) = 200 GeV
>
> The abstract is enclosed.
>
>
>                              Sincerely,
>
>                              Tim Hallman
>
>
> Abstract :
>
> We present the transverse momentum (p_{T}) spectra for
> identified charged pions, protons and anti-protons from p+p
> and d+Au collisions at sqrt{s_{{NN}}} = 200 GeV. The spectra
> are measured around midrapidity (|y|<0.5) over the range of
> p_{T} 0.3 GeV/c to 10 GeV/c with particle identification from
> the ionization energy loss and its relativistic rise in
> the Time Projection Chamber and Time-of-Flight in STAR. The
> charged pion and proton+anti-proton spectra at high p_{T} in
> p+p and d+Au collisions are in good agreement with a
> phenomenological model (EPOS) and with the next-to-leading order
> perturbative quantum chromodynamic (NLO pQCD) calculations with
> a specific fragmentation scheme and factorization scale.
> We found that all proton, anti-proton and charged pion spectra
> in p+p collisions follow x_{T}-scalings for the momentum range where
> particle production is dominated by hard processes (p_{T} >~ 2 GeV/c).
> The identified particle Cronin effects around midrapidity are found
> to be significantly non-zero for charged pions and to be even larger
> for protons at intermediate p_{T} (2 < p_{T} < 5 GeV/c).
>
>
>
>
>
>
> 

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