Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..aprk13011z&link_type=abstract
American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As
Astronomy and Astrophysics
Astrophysics
Scientific paper
Recently, the flavored fragmentation functions (FFs) for seperated positive and negative pions, D_u^π^±, D_d^π^± and D_s^π^± have been extracted without making any assumptions about favored and unfavored transitions [1]. We compare these FFs with the ones used earlier [2] based on Ref. [3], and apply them to the calculation of high-pT meson spectra at SPS and RHIC energies in both proton-proton and nucleus-nucleus collisions. The intrinsic transverse momentum distribution of partons is taken into account.Nucleus-nucleus reactions are addressed in the Glauber framework, with transeverse momentum broadening and shadowing incorporated in the calculation. Absolute hadron yields and certain particle ratios (K/π) are shown. [1ex] [1] S. Kretzer et. al., Eur. Phys. J. C 22, 269 (2001) [1ex] [2] Y. Zhang et. al., Phys. Rev. C 65 in print (2002) [1ex] [3] B. A. Kniehl et. al., Nucl. Phys. B 597, 337 (2001)
George Fai
Zhang Yi
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