TY  - JOUR
AU  - Yu, Q. X.
AU  - Liang, W. H.
AU  - Bayar, M.
AU  - Oset, E.
PY  - 2019
DA  - 2019//
TI  - Line shape and D-(*())(D)over-bar(()*()) probabilities of psi(3770) from the e(+) e(-) -> D(D)over-bar reaction
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 076002
EP  - 17pp
VL  - 99
IS  - 7
PB  - Amer Physical Soc
AB  - We have performed a calculation of the D (D) over bar, D (D) over bar*, D*(D) over bar, D*(D) over bar* components in the wave function of the psi(3770). For this we make use of the P-3(0) model to find the coupling of psi(3770) to these components, that with an elaborate angular momentum algebra can be obtained with only one parameter. Then we use data for the e(+)e(-) -> D (D) over bar reaction, from where we determine a form factor needed in the theoretical framework, as well as other parameters needed to evaluate the meson-meson self-energy of the psi(3770). Once this is done we determine the Z probability to still have a vector core and the probability to have the different meson components. We find Z about 80%-85%, and the individual meson-meson components are rather small, providing new empirical information to support the largely q (q) over bar component of vector mesons, and the psi(3770) in particular. A discussion is done of the meaning of the terms obtained for the case of the open channels where the concept of probability cannot be strictly used.
SN  - 2470-0010
UR  - https://arxiv.org/abs/1901.09862
UR  - https://doi.org/10.1103/PhysRevD.99.076002
DO  - 10.1103/PhysRevD.99.076002
LA  - English
N1  - WOS:000463892700005
ID  - Yu_etal2019
ER  -