# W$$^{\pm}$$ $$\to$$ J/$$\Psi$$ + D$$_{s}$$$$^{\pm}$$

Author/​Artist:
McMahan, Joseph [Browse]
Format:
Senior thesis
Language:
English
Advisor(s):
Marlow, Daniel [Browse]
Contributor(s):
Olsen, James [Browse]
Department:
Princeton University. Department of Physics [Browse]
Class year:
2013
Description:
62 pages
Restrictions note:
Walk-in Access. This thesis can only be viewed on computer terminals at the Mudd Manuscript Library.
Summary note:
Leptonic decay modes of the W boson have been well-explored in data from the LHC. However, W hadronic decay modes are thought to make up over two thirds of all W decays, but are avoided because of the difficulty of W reconstruction through these channels. This thesis attempts to reconstruct W bosons through the J/$$\Psi$$ + D$$_s$$ decay mode, a channel more likely to produce results compared to other hadronic modes. This decay mode has never been experimentally explored. By making a series of cuts on a data set taken at the Compact Muon Solenoid (CMS), and then maximizing the signal-to-noise ratio of the reconstruction through analysis on Monte Carlo generated data, we arrive at a point where an experimental limit can be placed on the branching coefficient for this decay mode.