TY  - JOUR
AU  - Carames, T. F.
AU  - Valcarce, A.
AU  - Vijande, J.
PY  - 2012
DA  - 2012//
TI  - Too many X's, Y's and Z's?
T2  - Phys. Lett. B
JO  - Physics Letters B
SP  - 358
EP  - 361
VL  - 709
IS  - 4-5
PB  - Elsevier Science Bv
AB  - A large number of new states have been reported during the last few years in charmonium spectroscopy above the charmed meson production threshold. They have been called X's, Y's, and Z's. We reflect on the influence of thresholds on heavy meson spectroscopy comparing different flavor sectors and quantum numbers. The validity of a quark-model picture above open-flavor thresholds would severely restrict the number of channels that may lodge meson-meson molecules.
SN  - 0370-2693
UR  - http://arxiv.org/abs/1203.1123
UR  - https://doi.org/10.1016/j.physletb.2012.02.020
DO  - 10.1016/j.physletb.2012.02.020
LA  - English
N1  - WOS:000302454700005
ID  - Carames_etal2012
ER  -