Upsilon cross-section in p+p collisions at sqrt(sNN) = 200 GeV, 2009 data - Yield Extraction

Note: All plots are currently using -1.8 < nσ_e < 3 which is not optimized for this analysis!
Note: All plots are using every run using Trigger ID 240641; run-by-run QA has not yet been completed or implemented!

• Invariant mass distributions
  • Unlike-sign and Like-sign inv. mass (Drew)
    • 
  • Like-sign subtracted inv. mass (Drew)
    • 
    • Fit is from 5 GeV/c² to 16 GeV/c²
  • Crystal-Ball shapes from embedding/simulation. (Kurt)
  0<pt<10 & 0<|y|<1

  Param	1S	2S	3S
  alpha	1.21	1.21	1.27
  n	1.85	1.96	1.89
  mu	9.46	10.02	10.35
  sigma	0.124	0.145	0.154

  •  0<pt<10 & 0<|y|<0.5
    

    Param	1S	2S	3S
    alpha	1.18	1.16	1.21
    n	1.83	2.06	2.04
    mu	9.46	10.02	10.35
    sigma	0.125	0.143	0.150

    0<pt<10 & 0.5<|y|<1

  • Param	1S	2S	3S
    alpha	1.21	1.21	1.27
    n	1.85	1.96	1.89
    mu	9.46	10.02	10.35
    sigma	0.124	0.145	0.154

  • 0<pt<2 & 0<|y|<0.5

  • Param	1S	2S	3S
    alpha	1.30	1.43	1.12
    n	1.81	1.65	2.78
    mu	9.46	10.02	10.35
    sigma	0.119	0.139	0.141

  • 0<pt<2 & 0.5<|y|<1

  • Param	1S	2S	3S
    alpha	1.72	1.53	1.25
    n	1.23	1.86	2.37
    mu	9.46	10.02	10.35
    sigma	0.141	0.151	0.163

  • 2<pt<4 & 0<|y|<0.5

  • Param	1S	2S	3S
    alpha	1.30	1.14	1.31
    n	1.72	2.12	1.85
    mu	9.46	10.02	10.35
    sigma	0.126	0.134	0.155

    2<pt<4 & 0.5<|y|<1

  • Param	1S	2S	3S
    alpha	1.59	1.25	1.65
    n	1.52	2.13	1.23
    mu	9.46	10.02	10.35
    sigma	0.135	0.139	0.159

  • 4<pt<6 & 0<|y|<0.5

  • Param	1S	2S	3S
    alpha	1.11	1.22	1.30
    n	1.97	2.17	2.07
    mu	9.46	10.02	10.35
    sigma	0.117	0.152	0.155

  • 4<pt<6 & 0.5<|y|<1

  • Param	1S	2S	3S
    alpha	1.17	1.60	1.30
    n	2.20	1.46	1.66
    mu	9.46	10.02	10.35
    sigma	0.136	0.179	0.162

  • 6<pt<8 & 0<|y|<0.5

  • Param	1S	2S	3S
    alpha	1.08	1.11	.984
    n	2.07	2.18	2.82
    mu	9.46	10.02	10.35
    sigma	0.138	0.154	0.154

  • 6<pt<8 & 0.5<|y|<1

  • Param	1S	2S	3S
    alpha	1.06	1.22	1.03
    n	2.16	2.16	2.75
    mu	9.46	10.02	10.35
    sigma	0.133	0.166	0.165

  • 0<pt<2 & 0<|y|<1

  • Param	1S	2S	3S
    alpha	1.39	1.46	1.18
    n	1.66	1.63	2.42
    mu	9.46	10.02	10.35
    sigma	0.124	0.142	0.146

  • 2<pt<4 & 0<|y|<1

  • Param	1S	2S	3S
    alpha	1.33	1.16	1.35
    n	1.72	2.10	1.78
    mu	9.46	10.02	10.35
    sigma	0.128	0.135	0.152

  • 4<pt<6 & 0<|y|<1

  • Param	1S	2S	3S
    alpha	1.10	1.25	1.32
    n	2.06	1.90	1.93
    mu	9.46	10.02	10.35
    sigma	0.121	0.157	0.157

  • 6<pt<8 & 0<|y|<1

  • Param	1S	2S	3S
    alpha	1.08	1.25	1.00
    n	2.06	2.18	2.71
    mu	9.46	10.02	10.35
    sigma	0.138	0.156	0.156

  • Crystal-ball parameters to be used in fit (Drew)
• Fit to Like-sign subtracted inv. mass, using CB, DY, b-bbar.
  • Contour plot (1sigma and 2sigma) of b-bbar cross section vs. DY cross section. (Drew)
    • 
      • This plot is flawed -- using 2006 background fit and integrated luminocity
  • Upsilon yield estimation and stat. + fit error. (Drew)
• (2S+3S)/1S
  • Method 1
    • Fix the 1S, 2S, and 3S to PDG ratios
    • f = (CB1 + (CB2+CB3)*B ) / N
    • B = (pp2009 2S+3S) / (PDG 2S+3S)
  • Method 2
    • Fix the 1S, 2S, and 3S to PDG ratios
    • f = (CB1 + CB2*B2 + CB3*B3) / N
    • Need to think more about what B2 and B3 are
      • B2 = pp2009(2S / 1S)?
      • B3 = pp2009(3S / 1S)?