UNIGE document Scientific Article
previous document  unige:90972  next document
add to browser collection
Title

Symmetries for vector and axial-vector mesons

Authors
Grazzini, M
Published in Physics Letters. B. 1995, vol. 349, no. 4, p. 533-540
Abstract We discuss the possible symmetries of the effective lagrangian describing interacting pseudoscalar-, vector-, and axial-vector mesons. Specific choices of the parameters give rise to an [SU(2) ⊗ SU(2)]3 symmetry. This symmetry can be obtained either á la Georgi, with all states in the spectrum remaining massless, or in a new realization, implying decoupling of the pseudoscalar bosons from degenerate vector and axial-vector mesons. This second possibility, when minimally coupled with SU(2) ⊗ U(1) electroweak gauge vector bosons, seems particularly appealing. All deviations in the low-energy electroweak parameters are strongly suppressed, and the vector and axial-vector states turn out to be quite narrow. A nearby strong electroweak sector would then be conceivable and in principle it could be explored with relatively low energy accelerators.
Identifiers
Full text
Structures
Citation
(ISO format)
CASALBUONI, Roberto et al. Symmetries for vector and axial-vector mesons. In: Physics Letters. B, 1995, vol. 349, n° 4, p. 533-540. https://archive-ouverte.unige.ch/unige:90972

33 hits

6 downloads

Update

Deposited on : 2017-01-11

Export document
Format :
Citation style :