In the present work some hadronic properties of the scalar &kappa / meson are studied.
Using the QCD sum rules approach, which is a nonperturbative method, the
mass and the overlap amplitude of this meson are calculated. As well as the
mass and the overlap amplitude, &kappa / &rarr / K^+&pi / ^&minus / decay is also studied. For this
decay the coupling constant g_&kappa / K^+&pi / ^&minus / is obtained using light cone QCD sum rules
which is an extension of the QCD sum rules method. Moreover, the coupling
constant is calculated using the experimental decay width and it is compared
with the value obtained in light cone QCD sum rules approach. The result of
the calculation of g_&kappa / K^+&pi / ^&minus / , the one obtained from light cone QCD sum rules
approach, is also applied to acquire the f_0 &minus / &sigma / scalar mixing angle, &theta / s, using
the ratio g^2 (&kappa / &rarr / K^+&pi / ^&minus / )/g^2 (&sigma / &rarr / &pi / &pi / ) obtained from experimental decay width.
The value of scalar mixing angle is also compared with its experimental results.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12613672/index.pdf |
| Date | 01 September 2011 |
| Creators | Baytemir, Gulsen |
| Contributors | Yilmaz, Osman |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for METU campus |
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