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arXiv · 0910.5428

The Isgur-Wise Function within a Modified Heavy-Light Chiral Quark Model

Jan O. Eeg·Kresimir Kumericki
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Abstract

We consider the Isgur-Wise function xi(omega) within a new modified version of a heavy-light chiral quark model. While early versions of such models gave too small absolute value of the slope, namely xi'(1) of about -0.4 to -0.3, we show how extended version(s) may lead to values around -1, in better agreement with recent measurements. This is obtained by introducing a new mass parameter in the heavy quark propagator. We also shortly comment on the consequences for the decay modes B --> D D-bar.

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Jan O. Eeg, Kresimir Kumericki. 2009-10-28. The Isgur-Wise Function within a Modified Heavy-Light Chiral Quark Model. https://doi.org/10.1103/physrevd.81.074015

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