# First observation and branching fraction measurement of the rare decay ∧$$^0$$$$_b$$ → pKμ$$^+$$μ$$^-$$ at the LHCb experiment, CERN

Griffith, Peter Noel (2017). First observation and branching fraction measurement of the rare decay ∧$$^0$$$$_b$$ → pKμ$$^+$$μ$$^-$$ at the LHCb experiment, CERN. University of Birmingham. Ph.D.

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## Abstract

The analysis for the first observation and branching fraction measurement of the rare decay ∧$$^0$$$$_b$$ → pKμ$$^+$$μ$$^-$$ with respect to the control channel ∧$$^0$$$$_b$$ → J/ψ pK was performed. The analysis was kept blind in ∧$$^0$$$$_b$$ → pKμ$$^+$$μ$$^-$$ to avoid selection bias as this decay is unobserved. The data is from proton-proton collisions recorded by the LHCb experiment in 2011 and 2012, corresponding to an integrated luminosity of 1 fb$$^-$$$$^1$$ at 7 TeV and 2 fb$$^-$$$$^1$$ at 8 TeV respectively. A corrected yield of (7.83 ± 0.131 ± 0.648) x 10$$^6$$ ∧$$^0$$$$_b$$ → J/ψ Pk candidates was measured for the full 3 fb$$^-$$$$^1$$ and the analysis is currently under review by the LHCb Collaboration, awaiting approval to un-blind for the branching fraction measurement of ∧$$^0$$$$_b$$ → pKμ$$^+$$μ$$^-$$.

Type of Work: Thesis (Doctorates > Ph.D.)
Award Type: Doctorates > Ph.D.
Supervisor(s):
Supervisor(s)EmailORCID
Watson, NigelUNSPECIFIEDUNSPECIFIED
Licence:
College/Faculty: Colleges (2008 onwards) > College of Engineering & Physical Sciences
School or Department: School of Physics and Astronomy
Funders: None/not applicable
Subjects: Q Science > QC Physics
URI: http://etheses.bham.ac.uk/id/eprint/7446

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