Determination of the spin of new resonances in electroweak gauge boson pair production at the LHC

Journal Article · Sun May 01 00:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.095014· OSTI ID:21541642

Eboli, O J. P.; Fong, Chee Sheng; Gonzalez-Fraile, J; Gonzalez-Garcia, M C ^[1]

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1. Instituto de Fisica, Universidade de Sao Paulo, Sao Paulo-SP (Brazil)

The appearance of spin-1 resonances associated with the electroweak symmetry breaking sector is expected in many extensions of the standard model. We analyze the CERN Large Hadron Collider potential to probe the spin of possible new charged and neutral vector resonances through the purely leptonic processes pp{yields}Z{sup '{yields}}l{sup +}l{sup '-}Ee{sub T}, and pp{yields}W{sup '{yields}}l{sup '{+-}l+}l{sup -}Ee{sub T}, with l, l{sup '}=e or {mu}. We perform a model-independent analysis and demonstrate that the spin of the new states can be determined with 99% C.L. in a large fraction of the parameter space where these resonances can be observed with 100 fb{sup -1}. We show that the best sensitivity to the spin is obtained by directly studying correlations between the final state leptons, without the need of reconstructing the events in their center-of-mass frames.

• OSTI ID: 21541642
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 9; Other Information: DOI: 10.1103/PhysRevD.83.095014; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CENTER-OF-MASS SYSTEM
CERN LHC
CORRELATIONS
GAUGE INVARIANCE
LEPTONIC DECAY
LEPTONS
PAIR PRODUCTION
RESONANCE
SENSITIVITY
SPIN
STANDARD MODEL
SYMMETRY BREAKING
WEINBERG-SALAM GAUGE MODEL
ACCELERATORS
ANGULAR MOMENTUM
BASIC INTERACTIONS
CYCLIC ACCELERATORS
DECAY
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
GRAND UNIFIED THEORY
INTERACTIONS
INVARIANCE PRINCIPLES
MATHEMATICAL MODELS
PARTICLE DECAY
PARTICLE MODELS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
QUANTUM FIELD THEORY
STORAGE RINGS
SYNCHROTRONS
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
WEAK INTERACTIONS
WEAK PARTICLE DECAY