Search for Charged Higgs in t$$\bar{t}$$ Decay Products from Proton-Antiproton Collisions at √s = 1.96 TeV

Thesis/Dissertation · Sat Oct 01 00:00:00 EDT 2005

DOI:https://doi.org/10.2172/879047· OSTI ID:879047

Eusebi, Ricardo ^[1]

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1. Univ. of Rochester, NY (United States)

This dissertation reports the results of a search for charged Higgs bosons in the decays of t$$\bar{t}$$ pairs produced in p$$\bar{p}$$ collisions at a center-of-mass energy of 1.96 TeV. The search is performed on a data sample recorded by the upgraded Collider Detector at Fermilab and corresponding to an integrated luminosity of 193 pb^-1. The search is based on the relative rates of events in the different t$$\bar{t}$$ decay channels. Results are obtained in the context of different models. In the context of the minimal supersymmetric extension of the Standard Model (MSSM), for which they fully account for radiative and Yukawa coupling corrections, regions in the (m_H^±, tan (β)) plane are excluded. In the Tauonic Higgs Model in which the charged Higgs is assumed to decay exclusively to $$\bar{τ}$$, the BR(t → H⁺b) is constrained to be less than 0.4 at 95% C.L. If no assumption is made on the charged Higgs decay, the BR(t → H⁺b) is constrained to be less than 0.90 at 95% C.L. No evidence for charged Higgs production is found.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 879047
• Report Number(s): FERMILAB-THESIS-2005-33; TRN: US200711%%60
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DAUGHTER PRODUCTS
DECAY
FERMILAB COLLIDER DETECTOR
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HIGGS MODEL
LUMINOSITY
PRODUCTION
STANDARD MODEL
Experiment-HEP