Results 1  10
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197
Gravity coupled with matter and the foundation of non commutative geometry
, 1996
"... We first exhibit in the commutative case the simple algebraic relations between the algebra of functions on a manifold and its infinitesimal length element ds. Its unitary representations correspond to Riemannian metrics and Spin structure while ds is the Dirac propagator ds = ×— × = D −1 where D i ..."
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Cited by 343 (17 self)
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work with Ali Chamseddine) to give the SM Lagrangian coupled to gravity. The internal fluctuations of the non commutative geometry are trivial in the commutative case but yield the full bosonic sector of SM with all correct quantum numbers in the slightly non commutative case. The group of local gauge
SM.
, 2005
"... In this paper transverse muon polarization in the µ+ → e + νµνe ¯ decay in the framework of SM is considered. It is shown that the final state interaction effect leads to nonzero transverse polarization. Numerical value of the considered effect proved to be negligible. Thus SM contribution to the tr ..."
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handed fermions. To go beyond Standard Model(SM) one introduces into the lagrangian scalar, vector and tensor interactions of right and lefthanded particles [1]. All these interactions can be parameterized by 10 complex constants or one common unphysical phase with nineteen independent real parameters. If some
SM.
, 2005
"... In this paper transverse positron polarization in the µ+ → e + νµνe ¯ decay in the framework of SM is considered. It is shown that the final state interaction effect leads to nonzero transverse polarization. Numerical value of the considered effect proved to be negligible. Thus SM contribution to th ..."
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lefthanded fermions. To go beyond Standard Model(SM) one introduces into the lagrangian scalar, vector and tensor interactions of right and lefthanded particles [1]. All these interactions can be parameterized by 10 complex constants or one common unphysical phase with nineteen independent real
Quark Lagrangian diagonalization versus nondiagonal kinetic terms
, 2008
"... Loop corrections induce a dependence on the momentum squared of the coefficients of the Standard Model Lagrangian, making highly nontrivial (or even impossible) the diagonalization of its quadratic part. Fortunately, the introduction of appropriate counterterms solves this puzzle. The Standard Mode ..."
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Cited by 6 (6 self)
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Model (SM) Lagrangian is determined by its field content and two requirements: local SU(3) × SU(2)L × U(1) gauge invariance and renormalizability. The kinetic terms of quarks are taken canonically normalized and diagonal in flavor, while their interactions with the Higgs doublet contain two 3 × 3
The low energy effective Lagrangian relevant for us is therefore
, 2001
"... In this paper we study the implications of the recent high precision measurement of (g −2)µ by BNL [1] on new heavy physics beyond the SM. The effect of two d=6 operators on the anomalous magnetic momment of the muon is considered and the new physics contribution to aµ reported by BNL has been used ..."
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In this paper we study the implications of the recent high precision measurement of (g −2)µ by BNL [1] on new heavy physics beyond the SM. The effect of two d=6 operators on the anomalous magnetic momment of the muon is considered and the new physics contribution to aµ reported by BNL has been used
Proof of the equivalence theorem in the chiral Lagrangian formalism, Phys
 arXiv:hepph/9403283]. – 30 – H.J. He and
, 1994
"... Mailing address. A general proof of the equivalence theorem in electroweak theories with the symmetry breaking sector described by the chiral Lagrangian is given in the Rξ gauge by means of the WardTakahashi identities. The precise form of the theorem contains a modification factor Cmod associated ..."
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Cited by 1 (1 self)
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Mailing address. A general proof of the equivalence theorem in electroweak theories with the symmetry breaking sector described by the chiral Lagrangian is given in the Rξ gauge by means of the WardTakahashi identities. The precise form of the theorem contains a modification factor Cmod associated
LOW ENERGY EFFECTIVE LAGRANGIAN OF THE BESS MODEL
, 1994
"... In this paper the low energy limit of the BESS model is studied in a systematic way. The method consists in eliminating the heavy vector field, by use of its classical equations of motion, in the infinite mass limit. After the elimination of the heavy degrees of freedom we get additional terms to th ..."
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to the Standard Model lagrangian. After a finite renormalization of the ordinary gauge bosons wave functions, and redefinition of the lagrangian couplings in terms of MZ, the fine structure constant and the Fermi constant, we can read directly the deviations from the Standard Model. By this procedure we can
1. ELECTROWEAK LOWENERGY EF FECTIVE THEORY
, 2006
"... The SM Lagrangian whithout physical scalars is rewritten as the LO of a LowEnergy Effective Theory invariant under a higher non linear symmetry Snat ⊃ SU(2)W × U(1)Y. Soft breaking of Snat defines a hierarchy of non standard effects dominated by universal couplings of right handed quarks to W. The ..."
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The SM Lagrangian whithout physical scalars is rewritten as the LO of a LowEnergy Effective Theory invariant under a higher non linear symmetry Snat ⊃ SU(2)W × U(1)Y. Soft breaking of Snat defines a hierarchy of non standard effects dominated by universal couplings of right handed quarks to W
Beyond the standard model with effective Lagrangians, SLACPUB12
"... An Effective Lagrangian description is useful for describing potential physics beyond the Standard Model. The method is illustrated by reference to interactions among the electroweak bosons (W ± & Z0). The resulting estimates of the magnitude of these corrections suggest that they would be at b ..."
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Cited by 1 (0 self)
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An Effective Lagrangian description is useful for describing potential physics beyond the Standard Model. The method is illustrated by reference to interactions among the electroweak bosons (W ± & Z0). The resulting estimates of the magnitude of these corrections suggest that they would
U(4)L ⊗ U(4)R Chiral Lagrangian Model
, 1997
"... The D 0 –D 0 mixing is analyzed in a weak gauged U(4)L⊗U(4)R chiral lagrangian model where the electroweak interaction is introduced as a gauge theory over the meson degrees of freedom. This model allows a particular realization of the G.I.M. mechanism and then could be useful in the study of proces ..."
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The D 0 –D 0 mixing is analyzed in a weak gauged U(4)L⊗U(4)R chiral lagrangian model where the electroweak interaction is introduced as a gauge theory over the meson degrees of freedom. This model allows a particular realization of the G.I.M. mechanism and then could be useful in the study
Results 1  10
of
197