Home » Groups » STAR Protected

Run-11 Transverse Jets: Thoughts on an Embedding Request

Updated on Mon, 2013-03-25 20:34. Originally created by drach09 on 2013-03-25 16:51.

The Run-11 p+p 500 GeV transverse jet analysis has progressed to the point that it is time to discuss what will be needed for an embedding request. Currently, there is some amount of embedding available for Run-9 p+p 500 GeV with a di-jet filter. While this may suffice for high-pT (e.g. pT > 20 GeV/c), likely, this will not suffice at low pT (e.g. pT < 10 GeV/c). The presence of VPDMB data gives us the opportunity to perform data-driven trigger-bias and reconstruction-bias estimation. Thus, this is likely to be a relatively small sample.

Timescale

My goal is to have this analysis ready for MENU 2013 as well as the DNP 2013 fall meeting. Additionally, I would like to have an embedding sample ready by the end of May for possible summer undergraduate projects. Thus, I would like to have a request discussed and assembled within the next 2-3 weeks.

Target Measurements

The embedding will be used to measure the following:

  • Resolution of φS vs. pT
  • Resolution of φh vs. z and jT
  • Detector-jet to particle-jet and Detector-jet to parton-jet pT-shift
  • Lower limit on hadron ΔR (related to φh resolution)
  • Other ideas?

For my purposes ultra-high precision on the pT-shifts is not necessary (~0.5 GeV/c).

Trigger Mix

I will need to have some idea of the jet distributions for the following triggers:

  • VPDMB (320001)
  • JP0 (320600)
  • JP1 (320601)
  • JP2*L2JetHigh (320602)
  • AJP (320603).

Specifically, it will be useful to compare the different triggers as they depend on pT. I am in the process of rebinning at higher pT. For the time being, I have the following jet yields:

Bin Range [GeV/c] Raw Jet Yield (all Triggers) Raw Jet Yield (VPDMB) Raw Jet Yield (JP0) Raw Jet Yield (JP1) Raw Jet Yield (JP2*L2JetHigh) Raw Jet Yield (AJP)
6.0-7.1 968135 968135 0 0 0 0
7.1-8.4 1422185 440078 982107 0 0 0
8.4-9.9 1192145 185178 1006967 0 0 0
9.9-11.7 1706454 78946 868719 758789 0 0
11.7-13.8 1502171 32589 616926 852656 0 0
13.8-16.3 1172521 13859 387025 771637 0 0
16.3-19.2 3210082 6145 212229 559661 2167294 264753
19.2-22.7 3017605 2887 109570 357249 2320545 227354
22.7-26.8 2236954 1209 51100 190987 1844661 148997
26.8-31.6 1369088 814 22195 91890 1180230 73959
31.6-37.3 714207 511 9396 40587 635028 28685
37.3-45.0 340707 194 3917 17767 310168 8661
45.0-50.0 80742 57 887 4177 74330 1291
50.0-55.0 39326 32 458 1931 36470 435
55.0-60.0 20170 26 263 977 18745 159
60.0-65.0 10441 14 133 550 9671 73
65.0-70.0 5916 16 89 317 5445 49
70.0-75.0 3503 15 49 201 3202 36
75.0-80.0 2216 11 37 116 2029 23
80.0-85.0 1455 9 26 91 1307 22
85.0-90.0 1021 8 23 77 898 15
90.0-95.0 736 11 23 52 630 20
95.0-100.0 586 6 19 52 500 9

Recent Jet Embedding Requests

Groups: