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Removed global event cut from inclusive detached dilepton trigger lines

Martin Tat requested to merge rd-devel-gec-remove-mtat into rd-devel

The global event cut (GEC) is removed to improve signal efficiency in b->xll modes of the inclusive detached dilepton lines (IDDL) and cut-based lines.

Total rates of all RD full stream lines:

Before change: 11.1 kHz

After removing GEC for IDDL only: 12.8 kHz

After removing GEC for IDDL and cut-based lines: 13.8 kHz

Attached are the rates for each line:

Before change

After removing GEC for IDDL only

After removing GEC for IDDL and cutbased lines

In !4168 (merged), some acceptance cuts for dielectrons were added. These cuts reduces the rate significantly by rejecting candidates where electrons are outside the ECAL acceptance or don't have ECAL information. Since these changes were merged into rd-btoxll-dev, I have rebased this branch on top of rd-btoxll-dev, and I have also put the same cuts into the muon-electron builder.

After this change, the rate is: 10.8 kHz

After removing GEC and putting in ECAL acceptance cuts

Note that in order to put these ECAL acceptance cuts into the cut-based lines, the make_detached_dielectron and make_detached_mue_with_brem builders had to be replaced with make_rd_detached_dielectron and make_rd_detached_mue builders, with some minor changes.

Update: It looks like removing GEC for the cut-based lines without increasing the bandwidth significantly will be challenging, so I will leave the GEC in for these lines. This reduces the rate to 10.0 kHz, and it only increases the bandwidth by 2.7%.

Removing GEC for IDDL only, but with ECAL acceptance cuts for all electron lines

Edited by Martin Tat

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