Measurement of the Z boson cross-section in - Harvard University ...

More documents

Recommendations

Info

Chapter 6: Event Selection 192 Figure 6.14: Additional smearing needed in simulation using Z → µµ events with both muons in the barrel (left) and both in the endcap (right). Red lines denote the fitted width and its statistical uncertainty in data. Black points denote the fitted width from Monte Carlo. C1 C2 All events 0.991 ± 0.005 0.055 ± 0.012 BB events 0.992 ± 0.010 0.031 ± 0.020 EE events 0.980 ± 0.012 0.063 ± 0.031 Table 6.12: Scale and extra resolution parameters measured in data by fitting the Z mass distribution and comparing with Monte Carlo events smeared according to Eq. 6.11. Errors are statistical only. Muon momentum scale and resolution from cosmic events During 2008-2009, ATLAS collected a substantial amount of cosmic muon events. A fraction of these muons traverse both the muon spectrometer (MS) and the inner detector (ID). We can derive an estimate of the muon momentum scale and resolution of the muon spectrometer by comparing the momentum measured in the MS with that measured in the ID. A detailed study to this effect can be found in [8]. We summarize below the measurement of muon momentum scale and resolution as a function of muon pT using matched ID and MS tracks in cosmic events.
Chapter 6: Event Selection 193 First, we produce distributions of a quantity Pdiff defined as: Pdiff = pMS T − p ID T p ID T , (6.12) in bins of p ID T . Fits of the Pdiff distributions will provide us with an estimate of the momentum resolution and scale. The selection criteria used for MS and ID tracks are as follows: • MS tracks: The motivations for these cuts can be found in [8], together with definitions of and motivations for ‘mirror’ and ‘shadow’ tracks: – track fit χ 2 /DoF < 10 – the track traverses all 3 muon stations – the track is in the top half of the detector – all MDT hits on the track are in the same sector – this sector is one of sectors 2-8 – the track has at least 4, 3, 3 hits in the MDT BI, BM, BO layers respectively – it has hits in at least 2 RPC φ layers – track p ≥ 2 GeV/c – there are no more than 10 segments in the sector containing the track – the mirror track has all hits in the same sector after efficiency corrections – it has at least 4, 3, 3 hits in the MDT BI, BM, BO layers respectively – it has hits in at least 2 RPC φ layers – the mirror and shadow tracks both confirm offline the RPC trigger algo- rithm used in the run
Page 1:
Measurement of the Z boson cross-se
Page 4 and 5:
Contents Title Page . . . . . . . .
Page 6 and 7:
Contents vi Electron reconstruction
Page 8 and 9:
List of Figures 1.1 Proton structur
Page 10 and 11:
List of Figures x 6.17 Muon pT scal
Page 12 and 13:
List of Tables xii 6.18 Decompositi
Page 14 and 15:
Acknowledgments xiv mate Niels van
Page 16 and 17:
Chapter 1: Introduction and Theoret
Page 18 and 19:
Page 20 and 21:
Page 22 and 23:
Page 24:
Page 28 and 29:
Page 30 and 31:
Page 32 and 33:
Page 34 and 35:
Page 36 and 37:
Page 38 and 39:
Page 40 and 41:
Page 42 and 43:
Page 44 and 45:
Page 46 and 47:
Page 48 and 49:
Chapter 2 The Accelerator and the E
Page 50:
Chapter 2: The Accelerator and the
Page 53 and 54:
Page 55 and 56:
Page 57:
Page 60 and 61:
Page 63:
Page 66 and 67:
Page 68 and 69:
Page 70 and 71:
Page 72 and 73:
Page 74 and 75:
Page 76 and 77:
Page 78 and 79:
Page 80:
Chapter 3 Luminosity Measurement at
Page 87 and 88:
Chapter 3: Luminosity Measurement a
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Chapter 4: Data Collection and Even
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135:
Page 140:
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156: Chapter 4: Data Collection and Even
Page 157: Chapter 4: Data Collection and Even
Page 162: Chapter 4: Data Collection and Even
Page 167 and 168: Chapter 5: Monte Carlo Simulation 1
Page 169 and 170: Chapter 5: Monte Carlo Simulation 1
Page 171: Chapter 5: Monte Carlo Simulation 1
Page 174 and 175: Chapter 6 Event Selection After eve
Page 177 and 178: Chapter 6: Event Selection 163 - In
Page 179 and 180: Chapter 6: Event Selection 165 Figu
Page 181 and 182: Chapter 6: Event Selection 167 with
Page 183 and 184: Chapter 6: Event Selection 169 Entr
Page 185 and 186: Chapter 6: Event Selection 171 Entr
Page 187 and 188: Chapter 6: Event Selection 173 T p
Page 191: Chapter 6: Event Selection 177 6.2.
Page 199: Chapter 6: Event Selection 185 are
Page 203 and 204: Chapter 6: Event Selection 189 Reco
Page 205: Chapter 6: Event Selection 191 smea
Page 211 and 212: Chapter 6: Event Selection 197 Para
Page 213 and 214: Chapter 6: Event Selection 199 the
Page 217: Chapter 6: Event Selection 203 Para
Page 222 and 223: Chapter 7: Background Estimation 20
Page 238 and 239: Chapter 8: Properties of Z bosons a
Page 248: Chapter 8: Properties of Z bosons a
Page 253 and 254: Chapter 9: Discussion and Outlook 2
Page 255 and 256: Chapter 9: Discussion and Outlook 2
Page 257 and 258:
Chapter 9: Discussion and Outlook 2
Page 259 and 260:
Appendix A: Event list 245 Candidat
Page 261 and 262:
Appendix A: Event list 247 Candidat
Page 263 and 264:
Appendix B: Comparison of muon curv
Page 265 and 266:
Bibliography 251 [13] S. Ask. Statu
Page 267 and 268:
Bibliography 253 [44] S. Frixione,
Page 269 and 270:
Bibliography 255 [75] N. E. Adam an
Page 271:
Bibliography 257 [102] The TOTEM Co
show all

Measurement of the Z boson cross-section in - Harvard University ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?