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Title page for ETD etd-08302011-143520

Type of Document Dissertation
Author Florez Bustos, Carlos Andres
URN etd-08302011-143520
Title Search for high mass resonances decaying to tau pairs at the CMS experiment
Degree PhD
Department Physics
Advisory Committee
Advisor Name Title
Will E. Johns Committee Chair
Andreas Berlind Committee Member
Paul Sheldon Committee Member
Robert Weller Committee Member
Thomas Kephart Committee Member
  • Z prime to taus
  • LHC taus
  • CMS taus
Date of Defense 2011-08-26
Availability unrestricted
High-mass states such as heavy gauge bosons (Z'), Kaluza-Klein resonances, and

gravitons, all of which decay into di-lepton states, are predicted by several physics

models. In this thesis a general search for high mass resonances decaying to tau lepton

pairs at the Large Hadron Collider (LHC) is performed. We use a Z' particle with

standard model couplings as a high mass benchmark in order to develop and tune the

analysis. Taus that decay either to an electron or a single charged hadron in the final

state are used to reconstruct the Z' (high mass particle), and the results of this search

are combined with other tau decay analyses to increase sensitivity. The combined

result from the Compact Muon Solenoid (CMS) experiment 2010 data taking exceeds

the sensitivity achieved by a previous search carried out by the CDF experiment at

the Fermi National Accelerator Laboratory in Batavia Illinois. Analyses performed

with the 2011 data will also be discussed.

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