This MR adds two new HLT1 lines to select hyperons. One looks for inclusive
\Omega\to\Lambda K^-; the other for
\Lambda\to p \pi^- that makes a good vertex with a detached track. The intention is to make use of the characteristic hyperon decay topology to select soft charm baryon decays to hyperons that have a relatively low efficiency with the generic lines.
This MR sits on top of !742 and heavily profits from the higher reconstruction efficiency at lower momenta.
Rates from standalone Allen on all
upgrade-magdown-sim10-up08-30000000-digi available on eos:
Hlt1DetachedLambdaLL: 12/ 6600, ( 54.55 +/- 15.73) kHz Hlt1XiOmegaLLL: 5/ 6600, ( 22.73 +/- 10.16) kHz
Their exclusive rate is
( 50.00 +/- 15.06) kHz w.r.t.