RD developments towards 14 April

Goals

Final final changes in RD modules for 2025 datataking including fixes and reductions for highest-bandwidth lines

Contributing

DO NOT PUSH directly to the branch of this MR (rd-devel-april25) unless you are instructed to do so by the coordinators. Additions for the start of 2025 data-taking should happen in independent branches.

All the additions need to be tested locally following these instructions

Do not rebase or force-push to this branch since this might lead to losses on the changes

The source branch of this merge request should work on LCG106c with Gaudi/v39r4 and all other projects on master. You may need to make purge before you can successfully make (please let us know if you have problems)

Changes

Reductions in radiative lines !4721 (merged)

@fibishop

• Cut tighter on hadron IPCHI2 to reduce rates for b2xgamma lines made necessary after changes in neutral reconstruction
• Adding CALO raw banks for radiative and btoxll lines

Reductions in inclusive radiative lines !4726 (merged)

@martorel

• BDT cuts to reduce rates for lines made necessary after changes in neutral reconstructions

Reduce combinatorics in Xi0->Lambda0Pi0 builder !4650 (merged)

@jherdiec

• Delta mass and cone cut to reduce combinatorics

Fix identification of RD lines in Full !4740 (merged)

@jagoodin

• Change regex string in Hlt/Hlt2Conf/python/Hlt2Conf/sprucing_settings/Sprucing_production_pp.py to correctly identify RD full lines

Improve signal efficiency of rare tau line !4741 (merged)

@driccard

• Improved selection of Hlt2RD_TauToPhiMu line

Improvements to hadronic tau selection !4710 (merged)

@fpolci

• The tau mass cuts (both on three pions and in particular on two pion combination) are too strong and reduce the efficiency. They are relaxed and, to compensate, the ownpvvdrho_min is increased

Remove duplication from charge descriptors with CC !4717 (merged)

@mtat

• Several CCs in the decay descriptors that are self-conjugate have been removed
• Fixed missing CC in def make_rd_prompt_mue in rdbuilder_thor.py

Add B0 -> Lambda p pi gamma lines !4597 (merged)

@nsahoo

• Added B0 -> Lambda p pi gamma lines with photon conversion to sprucing

Single-prong b to s tau tau lines

@achenhu @htilquin

• Finetuned existing B0 -> Kpi tautau, Bs -> KK tautau, Lb -> pK tautau decays, where the tau decays to a muon or an electron and neutrinos.
• For the above decays, included end states with tau -> pi (pi0) (pi0) nu, combined with another tau decay to pi (pi0) nu or to a lepton.