A5103861008- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Dark Matter and Cosmic Phenomena
- Industrial Vision Systems and Defect Detection
- Advanced Materials Characterization Techniques
- Diatoms and Algae Research
- Black Holes and Theoretical Physics
- Particle Accelerators and Free-Electron Lasers
- Advanced Measurement and Detection Methods
- Optical Systems and Laser Technology
- Extraction and Separation Processes
- Nuclear physics research studies
- Neutrino Physics Research
Henan Normal University
2005-2014
Institute of High Energy Physics
2001-2014
Shanxi University
2013
Petersburg Nuclear Physics Institute
2011
University of Washington
2011
Iowa State University
2006
A broad peak is observed at low K+K− invariant mass in J/ψ→K+K−π0 decays found a sample of 5.8×107 J/ψ events collected with the BESII detector. The statistical significance resonance much larger than 5σ. partial wave analysis shows that JPC this structure 1--. Its pole position determined to be [1576−55+49(stat)−91+98(syst)] MeV/c2−i2[818−23+22(stat)−133+64(syst)] MeV/c2. These parameters are not compatible any known meson resonances.Received 21 June...
New data are presented on $J/ψ\to ωK^+K^-$ from a sample of 58M $J/ψ$ events in the upgraded BES II detector at BEPC. There is conspicuous signal for $f_0(1710) \to K^+K^-$ and peak higher mass which may be fitted with $f_2(2150) K\bar K$. From combined analysis $ωπ^+ π^-$ data, branching ratio $BR(f_0(1710)\toππ)/BR(f_0(1710) K)$ $< 0.11$ 95% confidence level.
The decay ψ′→π+π−π0 is analyzed using a sample of 14 million ψ′ events taken with the BESII detector at BEPC, and branching fraction measured to be B(ψ′→π+π−π0)=(18.1±1.8±1.9)×10−5. A partial wave analysis carried out helicity amplitude method. ψ′→ρ(770)π observed, B(ψ′→ρ(770)π)=(5.1±0.7±1.1)×10−5, where first error statistical second one systematic. high mass enhancement around 2.15 GeV/c2 also observed. Attributing this ρ(2150) resonance, B(ψ′→ρ(2150)π→π+π−π0)=(19.4±2.5−3.4+11.5)×10−5....
The role of periphyton in the transformation heavy metal pollutants has attracted extensive attention.This paper reviews research progress transformation, including its species and characteristics, mechanism, influencing factors, practical application, existing problems future development direction.The results showed that metals were effectively transformed by through adsorption, biotransformation biodegradation.The main factors affecting include quantity organisms, concentration...
The recent measurements of the $B_s$ mass difference $ΔM_s$ by CDF and DØ collaborations are roughly consistent with Standard Model predictions, therefore, these will afford an opportunity to constrain new physics scenarios beyond Model. We consider impact R-parity violating supersymmetry in $B^0_s-\bar{B}^0_s$ mixing, use latest experimental results size tree level couplings mixing. Then, using constrained parameter space from $ΔM_s$, we show effects on width $ΔΓ_{s}$.