Search for Technicolor Particles Produced in Association with a W Boson at CDF

Journal Article · Fri Mar 19 00:00:00 EDT 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.104.111802· OSTI ID:21386853

Aaltonen, T; Mehtala, P; Orava, R; Osterberg, K; Saarikko, H; Remortel, N van ^[1]; Adelman, J; Brubaker, E; Fedorko, W T; Grosso-Pilcher, C; Hurwitz, M; Ketchum, W; Kim, Y K; Krop, D; Kwang, S; Lee, H S; Schmidt, M A; Shiraishi, S; Shochet, M; Tang, J ^[2]

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1. Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki (Finland)
2. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States)

We present a search for the technicolor particles {rho}{sub T} and pi{sub T} in the process pp->{rho}{sub T}->W{pi}{sub T} at a center of mass energy of sq root(s)=1.96 TeV. The search uses a data sample corresponding to approximately 1.9 fb{sup -1} of integrated luminosity accumulated by the CDF II detector at the Fermilab Tevatron. The event signature we consider is W->l{nu} and {pi}{sub T}->bb, bc or bu depending on the {pi}{sub T} charge. We select events with a single high-p{sub T} electron or muon, large missing transverse energy, and two jets. Jets corresponding to bottom quarks are identified with multiple b-tagging algorithms. The observed number of events and the invariant mass distributions are consistent with the standard model background expectations, and we exclude a region at 95% confidence level in the {rho}{sub T}-{pi}{sub T} mass plane. As a result, a large fraction of the region m({rho}{sub T})=180-250 GeV/c{sup 2} and m({pi}{sub T})=95-145 GeV/c{sup 2} is excluded.

• OSTI ID: 21386853
• Journal Information: Physical Review Letters, Vol. 104, Issue 11; Other Information: DOI: 10.1103/PhysRevLett.104.111802; (c) 2010 The American Physical Society; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGORITHMS
B QUARKS
CENTER-OF-MASS SYSTEM
ELECTRONS
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
GEV RANGE
JETS
LUMINOSITY
MASS DISTRIBUTION
MUONS
PARTICLE PRODUCTION
REST MASS
STANDARD MODEL
TEV RANGE
TRANSVERSE ENERGY
W MINUS BOSONS
W PLUS BOSONS
ACCELERATORS
BEAUTY PARTICLES
BOSONS
CYCLIC ACCELERATORS
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY
ENERGY RANGE
FERMIONS
FIELD THEORIES
GRAND UNIFIED THEORY
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
KINETIC ENERGY
LEPTONS
MASS
MATHEMATICAL LOGIC
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
OPTICAL PROPERTIES
PARTICLE MODELS
PHYSICAL PROPERTIES
QUANTUM FIELD THEORY
QUARKS
RADIATION DETECTORS
SPATIAL DISTRIBUTION
SYNCHROTRONS
UNIFIED GAUGE MODELS