A ug 1 99 8 Electromagnetic properties of hadrons via the u − d mass difference and direct photon exchange
نویسنده
چکیده
We demonstrate that a u − d quark mass difference (which we estimate to be about 5 MeV) within quantum loops, can reproduce the effects of the Coleman-Glashow electromagnetic tadpole operator. 13.40.Dk, 13.40.Ks, 12.50.Lr Typeset using REVTEX
منابع مشابه
Fe b 19 99 Electromagnetic properties of hadrons via the u − d mass difference and direct photon exchange
We demonstrate that a u − d quark mass difference (which we estimate to be about 4 MeV) within quantum loops, can reproduce the effects of the Coleman-Glashow electromagnetic tadpole operator. 13.40.Dk, 13.40.Ks, 12.50.Lr Typeset using REVTEX
متن کاملHypercentral Constituent Quark Model and Isospin for the Baryon Static Properties
So far the static properties of hadrons have been introduced in various models. The static properties of hadrons (charge radius, magnetic moment, etc.) are useful for understanding the quark structure of hadron. In this work we have introduced the hypercentral constituent quark and isospin dependent potentials. Here constituent quarks interact with each other via a potential in which we have ta...
متن کاملar X iv : h ep - p h / 96 08 37 8 v 1 2 0 A ug 1 99 6 PHOTOPRODUCTION OF JETS AT NLO
The production of jets with large transverse momenta by photon beams differs in a number of ways from the corresponding hadroproduction case. These differences can be used to further investigate the interactions of the underlying hadronic constituents as well as to study the interactions between photons and hadrons. It has become conventional to describe jet photoproduction in terms of two comp...
متن کامل- th / 9 90 80 45 v 1 1 2 A ug 1 99 9 1 The quark - photon vertex and meson electromagnetic form factors
The ladder Bethe–Salpeter solution for the dressed photon-quark vertex is used to study the low-momentum behavior of the pion electromagnetic and the γ ⋆ π 0 γ transition form factors. With model parameters previously fixed by light meson masses and decay constants, the low-momentum slope of both form factors is in excellent agreement with the data. In comparison, the often-used Ball–Chiu Ansat...
متن کاملMass hierarchy of leptons and hadrons within the framework of electrodynamics
Structure of leptons and hadrons within the framework of electrodynamics is considered. Muon and tau-lepton have the structure of 3 electrons. The mass of muon is defined by the section of two-photon annihilation. The mass of tau-lepton is defined by the section of three-photon annihilation. Hadrons are characterized by the structure of 5 electrons. The masses of hadrons are defined via the mas...
متن کامل