Anomalous quartic electroweak gauge-boson Interactions

Authors:

• O.J.P. Eboli (eboli AT fma.if.usp.br)

• M.C. Gonzalez-Garcia (concha AT max2.physics.sunysb.edu)

Description of the models:

We concentrate on anomalous quartic interaction among the electroweak gauge bosons that do not have a triple vertex associated to it. We describe these interactions using dimension eight effective operators assuming that the recently observed Higgs boson belongs to a SU(2) doublet; see the file quartic.pdf for further details.

The model labeled SM_LS0_LS1 contains the standard model interactions supplemented by the dimension eight operators L_{S,0} and L_{S,1} defined in the file "quartic.pdf". These dimension eight effective operators modify the vertices WWWW, WWZZ, and WWZZ that can be a simple re-scaling of the SM quartic interaction for a suitable choice of couplings.

The model labeled SM_LT8_LT9 contains the standard model interactions supplemented by the dimension eight operators L_{T,8} and L_{T,9} defined in the file "quartic.pdf". These dimension eight effective operators give rise to anomalous AAAA, AAAZ, AAZZ, AZZZ, and ZZZZ vertices.

References

• Strongly interacting vector bosons at the CERN LHC: Quartic anomalous couplings , A.S. Belyaev et al, Phys.Rev. D59 (1999) 015022

• p p ---> j j e+- mu+- nu nu and j j e+- mu-+ nu nu at order ... for the study of the quartic electroweak gauge boson vertex at CERN LHC, O.J.P. Eboli, M.C. Gonzalez-Garcia , and J.K. Mizukoshi, Phys.Rev. D74 (2006) 073005 [the dimension eight operators are from this reference]

• Anomalous quartic gauge boson couplings at hadron colliders, Oscar J.P. Eboli, M.C. Gonzalez-Garcia, S.M. Lietti, and S.F. Novaes., Phys.Rev. D63 (2001) 075008

• Bosonic quartic couplings at CERN LHC, O.J.P. Eboli, M.C. Gonzalez-Garcia, and S.M. Lietti, Phys.Rev. D69 (2004) 095005.

Instructions

The model files include the quartic and SM vertices in the unitary gauge.