A-A-Abdelhamid / LLP_Sleptons_RPV_SUSY

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Tuesday Dec 5th #24

Open A-A-Abdelhamid opened 10 months ago

A-A-Abdelhamid commented 10 months ago

I found an error in my earlier code regarding the number of accepted events. It only applied the ΔR to the leading and subleasing leptons, while ignoring other pairs. In my current version of the code this issue has been fixed. The resented numbers and rations are accurate (and were so in the last two weeks). The difference was ~ 20-30 events.

I generated another sample with the same parameters (400GeV mass and τ = 0.1 ns):

expected

Area under the histogram (number of surviving events):  2241.99365234375
Bin content:  2241.99365234375  error = +/-  26.01434167400309
Expected events:  8.135286956926269   +/-  0.09439551012657924  events

Thus we have an acceptance rate of 0.393 and % yield of 11.2%, my first sample had acceptance of 0.394 and % yield of 11.2% In the paper, the fraction of surviving events for the 0.1 ns 400-GeV smuons is:

acceptance X efficiency = 0.36 * 0.355 = 0.1278, thus a %yield of %12.78

I generated another sample with the same mass but different lifetime τ = 1 ns

image   with acceptance of 0.5492, the paper had 0.682

I will calculate the uncertainty in my calculation, this is a fresh result.

image