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Neutrino masses in SU(2) ⊗ U(1) theories
We analyze SU(2)×U(1) theories, denoted by (n, m), in which there are n neutrinos belonging to isodoublets and m neutrino isosinglets. The charged-current weak interactions are described by a…
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Neutrino decay and spontaneous violation of lepton number
The orders of magnitude of decay rates for relatively light neutrinos are studied in the framework of the SU(2)\ifmmode\times\else\texttimes\fi{}U(1) gauge group. The assumption is made that a…
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Neutrinoless Double beta Decay in SU(2) x U(1) Theories
It is shown that gauge theories give contributions to neutrinoless double-$\ensuremath{\beta}$ decay [${(\ensuremath{\beta}\ensuremath{\beta})}_{0\ensuremath{\nu}}$] which are not covered by the…
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Canonical Neutral Current Predictions From the Weak Electromagnetic Gauge Group SU(3) X $u$(1)
A straightforward SU(3) x U(1) model in which there is effectively one new neutral-current parameter (denoted by R) is shown to give the canonical neutrino neutral-current predictions for all values…
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Is the Effective Lagrangian for QCD a Sigma Model
A fully interacting effective chiral Lagrangian obeying the anomalous axial-baryon-current conservation law is constructed. This Lagrangian is a generalization of one implied by the 1/N…
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The Hunt for New Physics at the Large Hadron Collider
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Exploring pi pi scattering in the 1/Nc picture.
TLDR
The introduction of the \ensuremath{\rho} meson in a chirally invariant manner substantially delays the onset of drastic unitarity violation which would be present for the current algebra term alone, which suggests a possibility of local (in energy) cancellation.
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Non-Abelian anomaly and vector-meson decays
We propose an extension of the old, fairly successful, phenomenological prescription for adding spin-1 fields to the chiral Lagrangian of pseudoscalar mesons to the case where the Wess-Zumino term is…
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Eta-prime ---> eta pi pi decay as a probe of a possible lowest lying scalar nonet
We study the eta' to eta pi pi decay within an effective chiral Lagrangian approach in which the lowest lying scalar meson candidates sigma(560) and kappa(900) together with the f0(980) and a0(980)…
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Mechanism for a next-to-lowest lying scalar meson nonet
Recent work suggests the existence of a nonconventional lowest-lying scalar nonet containing the a{sub 0}(980). Then the a{sub 0}(1450) and also the K{sub 0}{sup *}(1430) are likely candidates to…
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