Neutral currents and Glashow-Iliopoulos-Maiani mechanism in SU(3)L

نویسندگان

  • Montero
  • Pisano
  • Pleitez
چکیده

We study the Glashow-Iliopoulos-Maiani mechanism for flavor-changing neutral-current suppression in both the gauge and Higgs sectors, for models with SU(3)z, Igt U(1)iv gauge symmetry. The models di6'er from one another only with respect to the representation content. The main features of these models are that in order to cancel the triangle anomalies the number of families must be divisible by three (the number of colors) and that the lepton number is violated by some lepton-gauge bosons and lepton-scalar interactions.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

DESY 08-207 Collider constraints on interactions of dark energy with the Standard Model

We study models in which a light scalar dark energy particle couples to the gauge fields of the electroweak force, the photon, Z, and W± bosons. Our analysis applies to a large class of interacting dark energy models, including those in which the dark energy mass can be adjusted to evade fifth-force bounds by the so-called “chameleon” mechanism. We conclude that—with the usual choice of Higgs s...

متن کامل

Experiments with high-energy neutrino beams.

Experiments in which high-energy neutrinos were used as projectiles have made substantial contributions to our understanding of both weak and strong interactions, as well as the structure of hadrons. This article offers some illustrations. It recalls the discovery of the neutral weak current and some experiments on its nature. The sections on charged-current inclusive scattering recall the impo...

متن کامل

A Gauge Model Based on Triplets

Recent observations of the new narrow resonances1), 2) and some anomalous phenomena3> are suggestive of the existence of a new quantum number of hadrons besides the well known isotopic spin and the strangeness. In unified gauge theories4l this kind of quantum number is required to cope with the absence of strangeness changing neutral current of the ordinary magnitude of weak interaction. In a p...

متن کامل

Topological amplitudes in D decays to two pseudoscalars: a global analysis with linear SU(3)F breaking

We study decays of D, D, and D s mesons into two pseudoscalar mesons by expressing the decay amplitudes in terms of topological amplitudes. Including consistently SU(3)F breaking to linear order, we show how the topological-amplitude decomposition can be mapped onto the standard expansion using reduced amplitudes characterized by SU(3) representations. The tree and annihilation amplitudes can b...

متن کامل

Unity of All Elementary-Particle Forces

We present a series of hypotheses and speculations leading inescapably to the conclusion that SU(5) is the gauge group of the world~hat all elementary particle forces (strong, weak, and electromagnetic) are different manifestations of the same fundamental interaction involving a single coupling strength, the fine-structure constant. Our hypotheses may be wrong and our speculations idle, but the...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Physical review. D, Particles and fields

دوره 47 7  شماره 

صفحات  -

تاریخ انتشار 1993