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BnoC BdsToKstzKstzb line reduce bandwidth

Matthew David Monk requested to merge mmonk_bnoc_tune into 2024-patches

Aims to reduce the bandwidth of the BdsToKstzKstzb line which was marked as problematic in issue #840 Short version this should reduce the bandwidth of the line by about a factor 2.

Running the bandwidth test myself from this snippet https://gitlab.cern.ch/-/snippets/3269 over 10 000 events:

  • Initially, bandwidth was 44.6 MB/s (table says 66.6 MB/s but different number of events)
  • I tightened up the vertex chi2 ndof cuts on the Ksts from 13 -> 9 and the B from 12 -> 9. I also increased the min pT sum of the B from 2500 -> 4000 and this altogether gave me a new bandwidth of 21.1 MB/s i.e. reduction of about factor 2

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