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On Omega CUTs 1: /star/u/wangxb/ucla/omega_try (see Slide 2) 2: /star/u/wangxb/ucla/omega_t2 (see Slide 3) 3: /star/u/wangxb/ucla/omega_t3/output (running, part see Slide 4)
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On Omega CUTs • 1: /star/u/wangxb/ucla/omega_try (see Slide 2) • 2: /star/u/wangxb/ucla/omega_t2 (see Slide 3) • 3: /star/u/wangxb/ucla/omega_t3/output (running, part see Slide 4) • 4: /star/u/wangxb/ucla/omega_t3/CuCu200y5 (Cu+Cu@200GeV) • 4X3 Cut Grid ---- 4 Centrality bins X 3 Pt bins • Pt----- 1.5 2.5 7 • V0_dca = x0*pv0x + y0*pv0y + z0*pv0z • cut_v0dca 3.5 3.0 3.3 • Hyperon reconstruction : • rec[i].dca_v0 0.15 0.2 0.3 • helix_ka[j].dca 0.5 0.75 1.0 • r2=sqrt(x0*x0+y0*y0) < rcut • rcut 2.0 2.2
CUT list : cut_v0dca = 3.0 rcut = 2.0 rec[i].dca_v0 = 0.15 helix_ka[j].dca = 0.5
CUT list : cut_v0dca = 3.3 rcut = 2.0 rec[i].dca_v0 = 0.2 helix_ka[j].dca = 0.75
CUT list : cut_v0dca = 3.3 rcut = 2.2 rec[i].dca_v0 = 0.2 helix_ka[j].dca = 0.75
Questions: 1: Events No. of AuAu 200GeV , y4 RUN, Minibias FullField+ReversedFullField? 25M? 22M? ~14M (ΦV2, Xiangzhou Cai’s talk @ QM2005 Budapest) 2: CuCu 200GeV Omega Rec. Failed ….. even failed to rec. Lambda and read Events No. 3: Omega Raw yield ? ~8,000 ? Or ~3,000 ?