Constituent quark masses and the electroweak standard model
نویسندگان
چکیده
منابع مشابه
Constituent Quark Masses and the Electroweak Standard Model
Constituent quark masses can be determined quite well from experimental data in several ways and one can obtain fairly accurate values for all six mq. The strong quark-meson coupling g = 2π/ √ 3 arises from the quark-level linear σ model, whereas e and sin θw arise from weak interactions when the heavy MW and MZ are regarded as resonances in analogy with the strong KSFR relation. The Higgs boso...
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Prompted by the recent surprising results in QCD spectroscopy, we extend to heavy flavors the hadron mass relations showing that the constituent quark mass differences and ratios have the same values when obtained from mesons and baryons. We obtain several new successful relations involving heavy quarks and provide some related predictions. We discuss in detail the apparent sharp decrease in ms...
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We calculate the electroweak properties of nucleons and hyperons in a relativistic constituent quark model using the light-front formalism. The parameters of the model, namely the constituent quark mass and the confinement scale, can be uniquely chosen for both the electromagnetic and weak experimental data. A consistent physical picture of the qqq system appears in this work with a symmetric n...
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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...
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We explore further the idea that the lattice QCD data for hadron properties in the region mπ > 0.2GeV 2 can be described by the constituent quark model. This leads to a natural explanation of the fact that nucleon excited states are generally stable for pion masses greater than their physical excitation energies. Finally we apply these same ideas to the problem of how pentaquarks might behave i...
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ژورنال
عنوان ژورنال: Journal of Physics G: Nuclear and Particle Physics
سال: 2006
ISSN: 0954-3899,1361-6471
DOI: 10.1088/0954-3899/32/5/009