Related Experiment Video
Updated: May 8, 2025

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
Published on: May 3, 2019
Evidence of h_{b}(2P)→ϒ(1S)η Decay and Search for h_{b}(1P,2P)→ϒ(1S)π^{0} with the Belle Detector
Abstract:
We report the first evidence for the h_{b}(2P)→ϒ(1S)η transition with a significance of 3.5 standard deviations. The decay branching fraction is measured to be B[h_{b}(2P)→ϒ(1S)η]=(7.1_{-3.2}^{+3.7}±0.8)×10^{-3}, which is noticeably smaller than expected. We also set upper limits on π^{0} transitions of B[h_{b}(2P)→ϒ(1S)π^{0}]<1.8×10^{-3}, and B[h_{b}(1P)→ϒ(1S)π^{0}]<1.8×10^{-3}, at the 90% confidence level. These results are obtained with a 131.4 fb^{-1} data sample collected near the ϒ(5S) resonance with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider.
More Related Videos
05:51Isotopic Effect in Double Proton Transfer Process of Porphycene Investigated by Enhanced QM/MM Method
Published on: July 19, 2019
14:11Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
Published on: March 29, 2016
Related Concept Videos
¹³C NMR: ¹H–¹³C Decoupling
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
Molecular Orbital Theory II
Double Resonance Techniques: Overview
Spin decoupling is usually achieved by...
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)
Hybridization of Atomic Orbitals II
Nuclear Overhauser Enhancement (NOE)