Lb2pkg

[IlyaSegal]

I prepared a JSON file and a Julia test file for reading the LbpKg model. For now, the test failed, throwing an error: ERROR: DomainError with -Inf. Do you have any suggestions on what can be the reason? Also, for now, I have excluded non-resonant poles since it is not possible to leave the "parametrization" field empty. But, probably, I can try to add a function for the non-resonant poles (it is simply an exponent) based on the example of Breit-Wigner. I inserted all the resonances with the L-S recoupling type. Am I right? Am I missing something else, what can cause this divergence?

Closes #2

[mmikhasenko]

Also, for now, I have excluded non-resonant poles since it is not possible to leave the "parametrization" field empty.

For now, additional lineshapes are living in src/HadronicLineshapesIO.jl. E.g. you find there an implementation of BreitWignerWidthExp: one needs three blocks: structure, call, and a constructor of wrapper for parsing.

[mmikhasenko]

For now, the test failed, throwing an error: ERROR: DomainError with -Inf. Do you have any suggestions on what can be the reason?

It was my issue, I've broken the test on Friday. Should be fixed now

[mmikhasenko]

I inserted all the resonances with the L-S recoupling type.

I think that is right.

[mmikhasenko]

well done!! 👍

• test agains gitlab implementation the repository contains implementation of the model from scratch, no hs3.

It can be done by matching the value of the unpolarized_intensity for the build model against the reference in a single kinematic point.

A simple way to call unpolarized_intensity on a decay chain is unpolarized_intensity(model[3:3], sigma_test)

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[mmikhasenko]

@IlyaSegal have a look to minor updates of json file 8101c1059ff2dabbd467b9984de452657ae2f86a 1d583a4419a2526b8a26b7d57656a677bc7ca917

I've added validation step to tests. It passes now for Lc2ppiK, and fails for your decay. The value for the cross check is made up. To put correct value, evaluate the notebook in https://gitlab.cern.ch/mimikhas/Lb2pKg.jl at the appropriate point

[mmikhasenko]

Solved on https://github.com/RUB-EP1/amplitude-serialization/pull/34 and https://github.com/RUB-EP1/amplitude-serialization/pull/39