Proposal for a Simulation at PHENIX Computing Center in Japan (CC-J) Date: 13/05/04 To: the Planning and Coordination Office of CC-J Title : Precision Measurements of Fragmentation Functions at the Belle PWG : PHENIX Spin Physics Working Group/ Belle Charm Working Group Liaison: Name : Matthias Grosse Perdekamp & K. Hasuko Tel/Fax : +1 217 333 6544/1215 E-mail : matthias@bnl.gov Person responsible for the job submission: Name : Dominik Gabbert Tel/Fax : +1 217 224 9663 E-mail : dgabbert@uiuc.edu Person responsible for the quality assurance: Name : Akio Ogawa Tel/Fax : +1 631 344 5293 E-mail : akio@bnl.gov Estimated CPU time required : 5000 hours (with PentiumIII 450MHz) Estimated disk space usage required : 500 GB Estimated HPSS space usage required : Target date for completion : 30/09/04 Purpose and merit of the simulation including kinds of events being simulated : In the available world data on the the normalized hadronic cross sections (fragmentation functions), data at high z is limited. In particular, at low sqrt(s), precise fragmentation function data are not available. We have investigated the possibility of re-measuring fragmentation functions at the Belle utilizing the highly integrated luminosity available at the KEKB and the excellent particle identification capabilities of the Belle detector. Precision fragmentation functions would serve as input to a global QCD analysis of longitudinal spin asymmetries in inclusive hadron production at RHIC in polarized pp collisions. We propose to carry out the data analysis using all the available off-resonance data of 40 fb^-1 and three times more MC samples. We expect that this analysis requires 5400 h of 450MHz Pentium III CPU time and 500 GB disk space. --------------------------------------------------------------------------- --------------------------------------------------------------------------- ML archives: http://www.rarf.riken.go.jp/rarf/rhic/ml/nmlist/phenix-ccj-admin/