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PHOBOS Phi Physics Mark D. Baker. Phi Rates. Assumptions: 15 f K K / central event 100 Hz central events (15% central & vtx cut) Yields: 9x10 f K K /nominal week Reconstructed f K K 1 nominal week (15% central cut) Si-extended + TOF: 230,000
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PHOBOS Phi Physics Mark D. Baker PHOBOS Review Mark D. Baker
Phi Rates • Assumptions: • 15 f K K / central event • 100 Hz central events (15% central & vtx cut) • Yields: 9x10 f K K /nominal week • Reconstructed f K K • 1 nominal week (15% central cut) • Si-extended + TOF: 230,000 • Si-only conservative PID: 50,000 + - 8 + - + - PHOBOS Review Mark D. Baker
Phi Resolution • Resolution: s(Minv) = 1.6 MeV • Dominated by momentum resolution • Calculated 2 ways: • Fast Simulation • Analytic propagation of errors • Error on Width (after 1 nominal week) • 0.7 MeV (extended-dE/dx + TOF) • 1.0 MeV (conservative-dE/dx only) PHOBOS Review Mark D. Baker