AP for qqbar2ll to run on Collision23 data set

Same qqbar2ll channels as before:

1. Upsilon(1S) -> mu+ mu-
2. J/psi(1S) -> mu- e+
3. J/psi(1S) -> e- e+
4. phi(1020) -> mu- e+

Output root files can be found here:https://lhcb-analysis-productions.web.cern.ch/pipelines/?id=6205935&prod=rd_run3_qqbar2ll&job=TurboPass_MagDown_2023_v1_Tuple

Instructions

When creating your merge request:

• Add a label for your WG
• Mark as "Draft:" until you're happy with the CI results
• If the merge request supersedes a previous one, add a comment at the end of the header: (supersedes !<MR number>). Please state explicitly in the description if the superseded ntuples can be deleted immediately, or after the new merge request is finalised

When ready:

• Remove the "Draft:" from the title:
• Assign the merge request to you working group's DPA/RTA liaison

To find your working group's DPA/RTA liaison, see this page:

https://twiki.cern.ch/twiki/bin/viewauth/LHCbPhysics/LHCbWGLiaisons