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- W2076168073 abstract "It is well known that configuration mixed three quark wavefunctions can explain many aspects of baryons like their spectroscopy, size and structure, decay properties, etc. However, in this work we show that this picture cannot be applied to explain GA of protons simultaneously with the integrated spin-dependent structure function glP. In fact, accepting a value of 1.26 for GAl) we get a lower limit for glP which is quite similar to the one obtained by Preparata and Soffer Z ) and which exceeds the EMC result of 0.114. 3 ) Configuration mixing is essential to explain many facets of baryons. One of its earliest applications was to reproduce the negative mean square charge radius of neutron. 4 ) Glashow has shown 5 ) that an adequate admixture of D-states (~0.25) could reproduce the GA of proton. Semileptonic decays of baryons can also be obtained with similar D-state admixtures. Also Isgur and co-workers have shown that the observed Ez/Ml ratio of the LJ-> Ny transition requires D-state admixtures for theoretical explanations. 6 ) Similarly, the observed value of g/ can also be re produced if one uses a large D-state admixture (~0.6). It is also shown that theoreti cal estimates of these observables can be made to agree with their experimental values (separately) if one uses relativistic corrections. 7 ) Keeping in view the above successes, several workers have attempted to reproduce GA and g/ within the frame work of a single non-relativistic quark model. However, they have failed. In the present work we take a closer look at this problem and show for the first time that it is impossible to reproduce these two quantities simultaneously using a single NRQM. The problem is non-trivial and the interest in these two quantities stems from the fact that they do not depend upon the space wavefunctions. Hence their theoretical estimates are relatively free of the uncertainties due to the choice of the model. In fact, the following analysis is completely free of any such choice and depends only on the standard assumptions of all NRQM. The total wavefunction of three quarks in a nucleon can be written as 8 ),9)" @default.
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- W2076168073 date "1991-11-01" @default.
- W2076168073 modified "2023-09-23" @default.
- W2076168073 title "Incompatibility of GA and Spin of Nucleon with Configuration Mixing" @default.
- W2076168073 doi "https://doi.org/10.1143/ptp/86.5.969" @default.
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