Measurement of the Spin of the Omega- Hyperon at BABAR
The BABAR Collaboration, B. Aubert
Abstract
A measurement of the spin of the Omega- hyperon produced through the exclusive process Xic0 --> Omega- K+ is presented using a total integrated luminosity of 116 fb-1 recorded with the BABAR detector at the e+ e- asymmetric-energy B-Factory at SLAC. Under the assumption that the Xic0 has spin 1/2, the angular distribution of the Lambda from Omega- --> Lambda K- decay is inconsistent with all half-integer Omega- spin values other than 3/2. Lower statistics data for the process Omegac0 --> Omega- pi+ from a 230 fb-1 sample are also found to be consistent with Omega- spin 3/2. If the Xic0 spin were 3/2, an Omega- spin of 5/2 cannot be excluded.
Create a lesson
Related papers
Accelerating Optical Photon Simulation in DUNE with Opticks
Ilker Parmaksiz, Aaron Higuera, Laura Paulucci et al.
Search for high-mass resonances in photon-jet final states using 140 fb-1 of pp collisions at s = 13 TeV with the ATLAS detector
ATLAS Collaboration
Efficient binned profile likelihood minimization for precision measurements with RABBIT
David Walter, Josh Bendavid, Kenneth Long
A Weighting Method for Incorporating Mass Resolution Effects in Amplitude Analysis
Benhou Xiang, Wenqian Zheng, Hongxun Yang et al.
A High Performance Partial Wave Analysis Framework for Hadron Spectroscopy
Benhou Xiang, Shuangshi Fang, Beijiang Liu
Measurement of tZq inclusive and differential cross-sections in pp collisions at s = 13~TeV with the ATLAS detector
ATLAS Collaboration