Spin/Polarization per particle in HepMC

[dirkzerwas]

Whizard running pol (DiFermion_Polarized, but turning off Beamstrahlung) results in the following hepmc output:
WhizardPolarized.txt

From the description of HepMC I would have expected two attributes per polarized particle:
theta and phi, but from the file I see no information.

In the Whizard converter to HepMC the theta and phi attributes are filled here:
https://gitlab.tp.nt.uni-siegen.de/whizard/public/-/blob/master/src/hepmc/HepMC3Wrap.cpp?ref_type=heads#L383
but it's not in the output? Never called/filled?

[apricePhy]

Very odd, they are normaly quite reliable when it comes to polarization On 22. Apr 2024, at 17:50, Dirk Zerwas ***@***.***> wrote: UWAGA: Wiadomość pochodzi od zewnętrznego nadawcy. Whizard running pol (DiFermion_Polarized, but turning off Beamstrahlung) results in the following hepmc output: WhizardPolarized.txt<https://github.com/key4hep/k4GeneratorsConfig/files/15065370/WhizardPolarized.txt> From the description of HepMC I would have expected two attributes per polarized particle: theta and phi, but from the file I see no information. In the Whizard converter to HepMC the theta and phi attributes are filled here: https://gitlab.tp.nt.uni-siegen.de/whizard/public/-/blob/master/src/hepmc/HepMC3Wrap.cpp?ref_type=heads#L383 but it's not in the output? Never called/filled? — Reply to this email directly, view it on GitHub<#12>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/BC3NHSDL2UCPT5J2IIB7KWTY6UWS7AVCNFSM6AAAAABGTBTHIKVHI2DSMVQWIX3LMV43ASLTON2WKOZSGI2TMOBZGY2TSNQ>. You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[dirkzerwas]

Hi @apricePhy,

do you have a SHERPA output hepmc3 with polarization? 10 events are enough. It's just to test the decoding in the Writer while I wait for Juergen's answer.

Cheers,
Dirk

[apricePhy]

Hi Dirk, I do not. It seems we do not write out polarization information. I will iterate with the other sherpas Cheers, Alan On 23. Apr 2024, at 11:51, Dirk Zerwas ***@***.***> wrote: UWAGA: Wiadomość pochodzi od zewnętrznego nadawcy. Hi @apricePhy<https://github.com/apricePhy>, do you have a SHERPA output hepmc3 with polarization? 10 events are enough. It's just to test the decoding in the Writer while I wait for Juergen's answer. Cheers, Dirk — Reply to this email directly, view it on GitHub<#12 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/BC3NHSARH3G7CSUHD5HZTVDY6YVL5AVCNFSM6AAAAABGTBTHIKVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDANZRHA4DKNJYGE>. You are receiving this because you were mentioned.Message ID: ***@***.***>