The nature of ZbZ_b states from a combined analysis of Υ(5S)→hb(mP)π+π−\Upsilon(5S)\rightarrow h_b(mP) \pi^+ \pi^- and Υ(5S)→B(∗)Bˉ(∗)π\Upsilon(5S)\rightarrow B^{(\ast)}\bar B^{(\ast)}\pi

With a combined analysis of data on $\Upsilon(5S)\rightarrow h_b(1P,2P)\pi^+\pi^-$ and $\Upsilon(5S)\rightarrow B^{(\ast)}\bar B^{(\ast)}\pi$ in an effective field theory approach, we determine resonance parameters of $Z_b$ states in two scenarios. In one scenario we assume that $Z_b$ states are pure molecular states, while in the other one we assume that $Z_b$ states contain compact components. We find that the present data favor that there should be some compact components inside $Z_b^{(\prime)}$ associated with the molecular components. By fitting the invariant mass spectra of $\Upsilon(5S)\rightarrow h_b(1P,2P)\pi^+\pi^-$ and $\Upsilon(5S)\rightarrow B^{(\ast)}\bar B^{\ast}\pi$, we determine that the probability of finding the compact components in $Z_b$ states may be as large as about $40\%$.Comment: Discussions added, version published in EPJ

Risk Factors for Artificial Kidney Failure During Continuous Renal Replacement Therapy

Objective To explore the influencing factors of artificial kidney failure (AKF) during continuous renal replacement therapy (CRRT). Methods We conducted a retrospective observational study on 70 patients undergoing 199740 minutes of CRRT comprising 143 circuits at the Department of Intensive Care Medicine of First Affiliated Hospital of Chongqing Medical University from August 2021 to August 2022. Results The occurrence rate and total time of access outflow dysfunction (AOD) in AKF group increased significantly than those in nAKF group. Receiver Operating Characteristic (ROC) Curve analysis showed the optimal cutoff value of AOD total time (AODTT) was 7 minutes. Logistic regression analysis further showed that AODTT≥7 min was an independent predictor of AKF. Conclusion The presence of AOD was related to AKF. AODTT≥7 min during CRRT was an independent risk factor for AKF