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arXiv · 1311.4607

Study of the $D^*ρ$ system using QCD sum rules

A. Martinez Torres·K. P. Khemchandani·M. Nielsen·F. S. Navarra·E. Oset
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Abstract

In this talk I present a study of the $D^* ρ$ system made by using the method of QCD sum rules. Considering isospin and spin projectors, we investigate the different configurations and obtain three $D^*$ mesons with isospin $I=1/2$, spin $S=0$, $1$, $2$ and with masses $2500\pm 67$ MeV, $2523\pm60$ MeV, and $2439\pm119$ MeV, respectively. The last state can be related to $D^*_2(2460)$ (spin 2) listed by the Particle Data Group, while one of the first two might be associated with $D^*(2640)$, whose spin-parity is unknown. In the case of $I=3/2$ we also find evidences of three states with spin 0, 1 and 2, respectively, with masses $2467\pm82$ MeV, $2420\pm128$ MeV, and $2550\pm56$ MeV.

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A. Martinez Torres, K. P. Khemchandani, M. Nielsen, F. S. Navarra, E. Oset. 2013-11-19. Study of the $D^*ρ$ system using QCD sum rules. https://doi.org/10.1063/1.4901765

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