LONGITUDINAL PART OF THE RESONANCE W-BOSON PROPAGATOR

Authors
ATWOOD D EILAM G SONI A MENDEL RR MIGNERON R
Citation
D. Atwood et al., LONGITUDINAL PART OF THE RESONANCE W-BOSON PROPAGATOR, Physical review. D. Particles and fields, 49(1), 1994, pp. 289-292
Citations number
26
Categorie Soggetti
Physics, Particles & Fields
Journal title
Physical review. D. Particles and fields → ACNP
ISSN journal
05562821
Volume
49
Issue
1
Year of publication
1994
Pages
289 - 292
Database
ISI
SICI code
0556-2821(1994)49:1<289:LPOTRW>2.0.ZU;2-E
Abstract
We prove that the coefficient of the longitudinal part of the W-boson propagator close to resonance is equal to 1/(M(W)2 +iepsilon(L)), wher e epsilon(L) is proportional to squares of masses of those fermions th at the W can decay to. Consequently, the full propagator has a non-g(m unu) part that differs from the commonly used form, even in the limit of vanishingly small fermion masses.