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filename (at SLAC) |
| Begin event |
| End event |
| Event weight |
| process_id |
| 1st initial particle polarization if particle is e- or e+; beams/brems flag if photon |
| 2nd initial particle polarization if particle is e- or e+; beams/brems flag if photon |
|---|
FAQ
Whizard 1.40 has no gluon emission by default, leading to potentially incorrect multiplicity distributions.
This is true for WHIZARD but irrelevant for this sample since the parton showering was done with PYTHIA.
The WHIZARD version 1.40 that was used to generate this sample indeed did not include gluon emission. However gluon radiation was simulated using PYTHIA's parton showering algorithm. WHIZARD versions 1.50 and higher include gluon emission, and, starting with version 1.91, WHIZARD has its own parton showering code.
Whizard 1.40 Whizard has an incorrect implementation of the CKM matrix. Only diagonal terms of the matrix are present (and = 1!), giving wrong W decays.
Although true for the Whizard version 1.40 that was used to generate this data sample, it is extremely doubtful that this will have any effect on the current analyses. When we regenerate these datasets, we will be using the latest version of Whizard, which has corrected thisWHIZARD versions 1.51 and higher include the correct CKM matrix, and so future data samples will include the rarer W decays.
This sample has generator level cuts a la SiD, providing a potential bias when used for ILD.
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