Charge density of positively charged vector boson may be negative.

Journal Article · Fri May 04 04:00:00 EDT 2007 · Phys. Rev. Lett.

DOI:https://doi.org/10.1103/PhysRevLett.98.181805· OSTI ID:944035

Flambaum, V V; Kuchiev, M Yu

The charge density of vector particles, for example W{sup {+-}}, may change sign. The effect manifests itself even for a free propagation, when the energy of the W-boson satisfies {var_epsilon} > {radical}2m and the standing wave is considered. The charge density of W also changes sign in a vicinity of a Coulomb center. For an arbitrary vector boson (e.g., for spin 1 mesons), this effect depends on the g-factor. An origin of this surprising effect is traced to the electric quadrupole moment and spin-orbit interaction of vector particles; their contributions to the current have a polarization nature. The corresponding charge density equals {rho}{sub Pol} = {del} {center_dot} P, where P is an effective polarization vector that depends on the quadrupole moment and spin-orbit interaction. This density oscillates in space, producing zero contribution to the total charge.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC; Australian Research Council
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 944035
• Report Number(s): ANL/PHY/JA-57974
• Journal Information: Phys. Rev. Lett., Journal Name: Phys. Rev. Lett. Journal Issue: May 4, 2007 Vol. 98; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
CHARGE DENSITY
INTERMEDIATE BOSONS
L-S COUPLING
MESONS
ORIGIN
POLARIZATION
QUADRUPOLE MOMENTS
SPIN
STANDING WAVES
VECTORS