Charmed mesons in nuclei with heavy-quark spin symmetry

Abstract

We study the properties of charmed pseudoscalar and vector mesons in dense matter within a unitary meson-baryon coupled-channel model which incorporates heavy-quark spin symmetry. This is accomplished by extending the SU(3) Weinberg-Tomozawa Lagrangian to SU(8) spin-flavor symmetry and implementing a suitable flavor symmetry breaking. Several resonances with negative parity are generated dynamically by the s-wave interaction between pseudoscalar and vector meson multiplets with $1/2^{+}$ and $3/2^{+}$ baryons. Those states are then compared to experimental data as well as theoretical models. Next, Pauli-blocking effects and meson self-energies are introduced in a self-consistent manner to obtain the open-charm meson spectral functions in a dense nuclear environment. We finally discuss the formation of $D$-mesic nuclei.

8 pages, 5 figures, to appear in the proceedings of the 20th International IUPAP Conference on Few-Body Problems in Physics (FB20), Fukuoka, Japan, August 20th to 25th, 2012

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• Prediction of narrow $N^{\ast }$ and ${\Lambda }^{\ast }$ resonances with hidden charm above 4 GeV
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Cited by in corpus (1)

• Heavy Vector and Axial-Vector Mesons in Hot and Dense Asymmetric Strange Hadronic Matter