Isgur-Wise function within a modified heavy-light chiral quark model

Eeg, Jan O. and Kumerički, Krešimir (2010) Isgur-Wise function within a modified heavy-light chiral quark model. Physical Review D, 81 (7). pp. 74015-10. ISSN 1550-7998

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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.

Item Type: Article
Keywords: B mesons, D mesons, Quark models, Chiral Lagrangians
Date: April 2010
Subjects: NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
Additional Information: Copyright (2010) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 119-0982930-1016
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 31 May 2014 21:47
Last Modified: 24 Feb 2016 15:35

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