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Incorrect transverse mass mt2 definition #7

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Moelf opened this issue Mar 17, 2023 · 3 comments
Open

Incorrect transverse mass mt2 definition #7

Moelf opened this issue Mar 17, 2023 · 3 comments

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@Moelf
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Moelf commented Mar 17, 2023

mt2(lv::LorentzVector) = lv.t^2 - lv.z^2
mt(lv::LorentzVector) = mt2(lv)<0 ? -sqrt(-mt2(lv)) : sqrt(mt2(lv))

idk why we didn't do the naive px^2 + py^2, because that seems to be correct

@Moelf
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Moelf commented Mar 17, 2023

here our mt^2 is effectively

E^2 - pz^2 = m^2 + px^2 + py^2 + pz^2 - pz^2

which only gives me correct plot if particle is massless

@Moelf
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Moelf commented Mar 17, 2023

@Moelf
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Moelf commented Mar 17, 2023

I think we're missing a 2-particle version of mt2 and mt because that's apparently different from mt(vec1 + vec2), makes sense

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