The ratio of decay widths of X(3872) to ψ′γ \psi^{\prime}\gamma and J/ψγ J/\psi\gamma as a test of the X(3872) dynamical structure

Radiative decays of X(3872) with $J^{PC}=1^{++}$ are studied in the coupled-channel approach, where the $c\bar c$ states are described by relativistic string Hamiltonian, while for the decay channels $DD^*$ a string breaking mechanism is used. Within this method a sharp peak and correct mass shift of the $2 {}^3P_1$ charmonium state just to the $D^0D^{*0}$ threshold was already obtained for a prescribed channel coupling to the $DD^*$ decay channels. For the same value of coupling the normalized wave function (w.f.) of X(3872) acquires admixture of the $1 {}^3P_1$ component with the w.f. fraction $c_1=0.153 (\theta=8.8^\circ$), which increases the transition rate $\Gamma(X(3872)\rightarrow J/\psi\gamma)$ up to 50-70 keV, making the ratio $R=\frac{\mathcal{B}(X(3872)\rightarrow \psi^{\prime}\gamma)}{\mathcal{B}(X(3872)\rightarrow J/\psi \gamma)}=0.8\pm 0.20 (th)$ significantly smaller, as compared to $R\simeq 5$ for X(3872) as a purely $2 {}^3P_1$ state.Comment: 14 pages,2 Table

Estimation of variants of the pancreatic gland pathology in patients, suffering complicated forms of chronic pancreatitis in late postoperative period

Objective. Estimation of variants of the pancreatic gland pathology and rate of the unfavorable results occurrence in late postoperative period in patients, suffering  complicated forms of chronic pancreatitis, depending on the procedures of surgical treatment. Materials and methods. Results of surgical treatment of complicated forms of chronic pancreatitis in department of the gut surgery in 2007 - 2017 yrs were studied in 107 patients, who were divided into two groups: the Group I – 67 (62.7%) patients, in whom pancreato- and virsungodigestive operations were performed, and the Group II – 40 (37.4%) patients, in whom duodenum—preserving resection-drainage surgical interventions were done. Results. Unfavorable variants of pancreatic pathology were observed significantly more frequently in patients of the Group I – in 34/67 (50.7%) in comparison with patients of the Group II – in 6/40 (15.0%) (χ2=9.49, p=0.002). Conclusion. Analysis of rate of the unfavorable results occurrence in late postoperative period, depending on surgical tactics appled, have shown a trustworthy advantage of the resection-drainage operations