Dynamically generated 1+ heavy mesons

By using a heavy chiral unitary approach, we study the S wave interactions between heavy vector meson and light pseudoscalar meson. By searching for poles of the unitary scattering amplitudes in the appropriate Riemann sheets, several 1+ heavy states are found. In particular, a D∗K bound state with...

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Bibliographic Details
Published in:Physics letters. B 2007-04, Vol.647 (2-3), p.133-139
Main Authors: Guo, Feng-Kun, Shen, Peng-Nian, Chiang, Huan-Ching
Format: Article
Language:English
Subjects:
Dynamically generated states
Exact sciences and technology
formula omitted
Heavy chiral unitary approach
Nuclear physics
Physics
The physics of elementary particles and fields
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Summary:By using a heavy chiral unitary approach, we study the S wave interactions between heavy vector meson and light pseudoscalar meson. By searching for poles of the unitary scattering amplitudes in the appropriate Riemann sheets, several 1+ heavy states are found. In particular, a D∗K bound state with a mass of 2.462±0.010 GeV which should be associated with the recently observed Ds1(2460) state is obtained. In the same way, a B∗K¯ bound state (Bs1) with mass of 5.778±0.007 GeV in the bottom sector is predicted. The spectra of the dynamically generated D1 and B1 states in the I=1/2 channel are also calculated. One broad state and one narrow state are found in both the charmed and bottom sectors. The coupling constants and decay widths of the predicted states are further investigated.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2007.01.050