TY - JOUR
T1 - g=2 as the natural value of the tree-level gyromagnetic ratio of elementary particles
AU - Ferrara, Sergio
AU - Porrati, Massimo
AU - Telegdi, Valentine L.
PY - 1992
Y1 - 1992
N2 - We implement at the Lagrangian level a "natural" electromagnetic coupling prescription, different from the minimal one, and proposed a long time ago by Weinberg. This prescription yields, for elementary particles of arbitrary-spin, a gyromagnetic ratio g=2 at the tree level. This value is already known to arise in renormalizable theories for spin and spin 1, is suggested by the classical, relativistic equations of the spin polarization, and is also found for arbitrary-spin, charged excitations of the open string.
AB - We implement at the Lagrangian level a "natural" electromagnetic coupling prescription, different from the minimal one, and proposed a long time ago by Weinberg. This prescription yields, for elementary particles of arbitrary-spin, a gyromagnetic ratio g=2 at the tree level. This value is already known to arise in renormalizable theories for spin and spin 1, is suggested by the classical, relativistic equations of the spin polarization, and is also found for arbitrary-spin, charged excitations of the open string.
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U2 - 10.1103/PhysRevD.46.3529
DO - 10.1103/PhysRevD.46.3529
M3 - Article
AN - SCOPUS:0000202036
SN - 1550-7998
VL - 46
SP - 3529
EP - 3537
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
IS - 8
ER -