Standard Model of particles (IMAGE) DOE/Fermi National Accelerator Laboratory Caption The W boson is the messenger particle of the weak nuclear force. It is responsible for the nuclear processes that make the sun shine and particles decay. CDF scientists are studying the properties of the W boson using data they collected at the Tevatron Collider at Fermilab. Credit Fermilab Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.