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. Login
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