Quark masses: An environmental impact statement
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منابع مشابه
Quark Masses: An Environmental Impact Statement by
We investigate how the requirement that organic chemistry be possible constrains the values of the quark masses. Specifically, we choose a slice through the parameter space of the Standard Model in which quark masses vary so that as many as three quarks play a role in the formation of nuclei, while keeping fixed the average mass of the two lightest baryons (in units of the electron mass) and th...
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A. Introduction This note discusses some of the theoretical issues relevant for the determination of quark masses, which are fundamental parameters of the Standard Model of particle physics. Unlike the leptons, quarks are confined inside hadrons and are not observed as physical particles. Quark masses therefore cannot be measured directly, but must be determined indirectly through their influen...
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The authors of ref.[1], using QCD plus approximate chiral symmetry show that the " perfect " prediction 3/2 for |µ(p)/µ(n)| is coincidental. I agree; infact this was discussed in [2b,3,5] on the basis of the general QCD parameterization (GP). The argument in [2,3] is more general than that in [1], but [1] is of interest, because it exemplifies an explicit mechanism that may produce the coincide...
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