Intro

Just a collection of tools and classes for the Bs⁰ → DsK/Dsπ analysis. The different tree readers, readMCTree, readDataTree and lifetime inherit from a purely virtual class, readTree. There are several overloaded readTree::Loop() methods for different types of output.

Studies:

1. Bs⁰ time acceptance
2. Bs⁰ and bachelor particle opening angle as PID

Classes

Tree reader:

• Inherits from purely virtual readTree
• readDataTree reads data ntuples
• readMCTree reads Monte Carlo ntuples
• lifetime reads Monte Carlo ntuples for lifetime acceptance studies

Opening angle: oanglePID implements a DLL like PID variable from opening angle

Utilities

• accept.cc: an utility to select events using the lifetime tree reader for lifetime acceptance studies
• resolution.cc: make residual and pull plots from Monte Carlo
• ltFit.py: fit for the trigger lifetime acceptance function