Spin and Flavor Strange Quark Content of the Nucleon
| Autor: | Dahiya, Harleen, Gupta, Manmohan |
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| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Phys.Rev.D78:014001,2008 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevD.78.014001 |
| Popis: | Several spin and flavor dependent parameters characterizing the strangeness content of the nucleon have been calculated in the chiral constituent quark model with configuration mixing (\chiCQM_{config}) which is known to provide a satisfactory explanation of the ``proton spin crisis'' and related issues. In particular, we have calculated the strange spin polarization \Delta s, the strangeness contribution to the weak axial vector couplings \Delta_8 etc., strangeness contribution to the magnetic moments \mu(p)^s etc., the strange quark flavor fraction f_s, the strangeness dependent quark flavor ratios \frac{2 \bar s}{u+d} and \frac{2 \bar s}{\bar u+ \bar d} etc.. Our results are consistent with the recent experimental observations. Comment: 15 pages, 3 tables, to appear in PRD |
| Databáze: | arXiv |
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