10 - H1 - Desy

52 Event reconstruction and preselection
Year Beams Helicity Run Range
∫
Ldt [pb −1 ]
e + p + 367257 − 376562 16.7
2004
e + p − 376810 − 386696 23.7
e + p + 387537 − 392214 8.7
e − p + 396674 − 398679 0.16
e − p + 399629 − 402634 1.3
2005
e − p − 402993 − 414625 34.1
e − p + 415726 − 427474 30.0
e − p − 427872 − 436893 34.8
e − p − 444307 − 458154 35.6
e − p + 458841 − 466997 21.3
2006
e + p + 468531 − 485678 57.6
e + p − 485715 − 486072 1.06
e + p + 486073 − 490161 18.7
e + p − 490162 − 492541 10.3
2007 e + p − 492559 − 500611 45.9
Table 4.1: Summary of the data periods used in this analysis.
variations are caused by the changing trigger efficiency and variable beam qualities.
-1
Events / 12pb
700
600
500
400
300
200
100
2004
2005
2006
2007
350000 400000 450000 500000
Run number
Figure 4.1: Event yield for inclusive prompt photon selection. Each point corresponds
to the number of events selected per 12 pb −1 of integrated luminosity.