Opened 5 years ago
Last modified 2 years ago
#1406 new Task
Contribution to MissingET, calculating dPhi and M_T
Reported by: | SAUMYEN KUNDU | Owned by: | |
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Priority: | critical | Milestone: | |
Component: | Delphes code | Version: | Delphes 3 |
Keywords: | MissingET, dPhi, M_T, | Cc: |
Description
Hi,
I am working in an effective model with processes like : e-e+ -> photon + (new particle pair). Now the 'new particle pair's are massive and contributes to missing energy.
Now as my summary suggests, I have three queries or confusions.
- To include the new particles as the missing energy I added the following line in module ECal and HCal:
add EnergyFraction {6000005} {0.0 0.0}
and in the module Neutrino Filter, the following lines:
add PdgCode {6000005} add PdgCode {-6000005}
But the output is the same as without modifying the card. Is it normal or I am missing something?
- Since the new particles are massive, I will be interested in the quantity M_{T}. Now how do I measure the quantity?
- I am particularly interested in the quantity E{miss}_{T}*Cos(dPhi(E{miss}_{T},P{photon}_{T})). Is it possible to get this quantity from the ROOT file generated by Delphes?
I am using the ILD card on the hepMC file.
It will be very helpful if you can give some idea on these.
Regards,
Saumyen
Attachments (1)
Change History (3)
by , 5 years ago
Attachment: | Screenshot from 2019-09-27 13-48-50.png added |
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Difference between the two output.
comment:2 by , 2 years ago
The work of Implementation of Track based MET algorithm in official MissingET reconstuction package is on going. https://www.yourtexasbenefits.ltd/
Hi,
In case the third point was not clear enough. The quantity I mentioned is the same as the one reported in https://arxiv.org/pdf/1211.6096.pdf (page-11) or https://arxiv.org/pdf/1212.3352.pdf (page-3) with needful modifications. Is the argument of cosine function just the difference between the Phi's, like (MissingET.Phi-Photon.Phi) or something else?
And, regarding the first point, by 'same' what I meant is depicted in the screenshot attached herewith.
Regards,
Saumyen