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On the contribution of a heavy neutral particle to W-boson pair production in electron-positron annihilation

Maia, M.C.P.; Simoes, J.A.M.
Centro Brasileiro de Pesquisas Fisicas (CBPF), Rio de Janeiro, RJ (Brazil)1989

[en] The effect of a heavy neutral particle are obtained in the process e⁺e^-->W⁺W^- is studied. From the unitarity of the cross section limits on the mass and couplings of the N. Considering the contribution of this heavy particle to the anomalous magnetic moment of the electron a limit to the mixing angle between ordinary and excited (heavy) matter is inferred. (author)

Primary Subject

PHYSICS OF ELEMENTARY PARTICLES AND FIELDS (A2110)

Source

1989; 20 p

Record Type

Report

Report Number

CBPF-NF--016/89

Country of publication

Brazil

Descriptors (DEI)

ANNIHILATION, COUPLING CONSTANTS, CROSS SECTIONS, ELECTRON-POSITRON COLLISIONS, ELECTRONS, MAGNETIC MOMENTS, MASS, NEUTRINOS, PAIR PRODUCTION, UNITARITY, W MINUS BOSONS, W PLUS BOSONS

Descriptors (DEC)

BOSONS, COLLISIONS, ELECTRON COLLISIONS, ELEMENTARY PARTICLES, FERMIONS, INTERACTIONS, INTERMEDIATE BOSONS, INTERMEDIATE VECTOR BOSONS, LEPTONS, MASSLESS PARTICLES, PARTICLE INTERACTIONS, PARTICLE PRODUCTION, POSITRON COLLISIONS

Reference NumberReference Number

22017947

INIS VolumeINIS Volume

INIS IssueINIS Issue

META

New approach to test the hypothesis of compositeness

Epele, L.; Garcia Canal, C.A.; Sampayo, A.O.; Maia, M.C.P.; Lopes, J.H.; Martins Simoes, J.A.1988

AbstractAbstract

[en] We explore the possibility that composite weak vector bosons could behave accordingly to an SU/sub L//sup */(2)xU(1) group. New neutral-current effects are predicted in the 100--200-GeV region. We discuss the experimental consequences of this model for e⁺e^- colliders and compare possible excited-lepton decays with a fourth-generation lepton

Primary Subject

PHYSICS OF ELEMENTARY PARTICLES AND FIELDS (A2140)

Secondary Subject

CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS (A1140)

Record Type

Journal Article

Journal

Physical Review, D; ISSN 0556-2821;

; CODEN PRVDA; v. 38(7); p. 2129-2135

Country of publication

United States

Descriptors (DEI)

BOUND STATE, COMPOSITE MODELS, ELECTRON-POSITRON INTERACTIONS, EXCITED STATES, GEV RANGE 100-1000, ISOSPIN, LEPTONS, MASS SPECTRA, NEUTRAL CURRENTS, QUARKS, SPIN, STANDARD MODEL, STRING MODELS, SU-2 GROUPS, SYMMETRY BREAKING, TESTING, U-1 GROUPS, VECTOR MESONS

Reference NumberReference Number

20001326

INIS VolumeINIS Volume

INIS IssueINIS Issue

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