W radiative decays and the determination of magnetic dipole and electric quadrupole moments of the W

Journal Article · Tue Oct 01 04:00:00 EDT 1991 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.44.2064· OSTI ID:5150582

Samuel, M A ^[1]; Sinha, N; Sinha, R; Sundaresan, M K ^[2]

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1. Department of Physics, Oklahoma State University, Stillwater, Oklahoma (USA)
2. Ottawa-Carleton Institute for Physics, Carleton University, Ottawa (Canada)

The magnetic dipole moment of the {ital W} boson is given by {mu}={ital e}(1+{kappa}+{lambda})/2{ital M}{sub {ital W}} and its electric quadrupole moment is given by {ital Q}={minus}{ital e}({kappa}{minus}{lambda})/{ital M}{sub {ital W}}{sup 2}. A nonstandard magnetic dipole moment and a nonstandard electric quadrupole moment lead to different differential decay distributions in the radiative decays of {ital W}{sup {plus minus}}, {ital W}{sup {minus}}{r arrow}{ital e}{bar {nu}}{gamma} and {ital W}{sup {minus}}{r arrow}{ital d{bar u}}{gamma}. While hard photons are characteristic signatures of {kappa}{ne}1 there is no such explicit signal for {lambda}{ne}0. We present a technique for the determination of the values of {kappa} and {lambda} by measuring the total number of events in two regions of phase space. This experiment could be done at the CERN {ital e}{sup +}{ital e{minus}} collider LEP II, where a clean source of {ital W} bosons will be available.

• DOE Contract Number: FG05-85ER40215
• OSTI ID: 5150582
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 44:7; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTILEPTONS
ANTIMATTER
ANTINEUTRINOS
ANTIPARTICLES
BOSONS
DECAY
DIPOLE MOMENTS
ELECTRIC MOMENTS
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
INTERMEDIATE BOSONS
INTERMEDIATE VECTOR BOSONS
LEP STORAGE RINGS
LEPTONS
MAGNETIC DIPOLE MOMENTS
MAGNETIC MOMENTS
MASSLESS PARTICLES
MATHEMATICAL SPACE
MATTER
NEUTRINOS
PARTICLE DECAY
PHASE SPACE
QUADRUPOLE MOMENTS
RADIATIVE DECAY
SPACE
STORAGE RINGS
W MINUS BOSONS
W PLUS BOSONS