Back to today’s briefing

Story perspectives

Scientists Clash Over W Boson Mass Discovery

2/17/2025

32 5

Summary

Story summary

A groundbreaking discovery by Ashutosh Kotwal and his team at Fermilab revealed the W boson’s mass to be a staggering 77 million eV heavier than expected, challenging the foundations of the Standard Model of particle physics. Yet, a follow-up measurement from CERN matched predictions, igniting a quest to uncover possible errors in both experiments.

1 of 1

Story summary

A groundbreaking discovery by Ashutosh Kotwal and his team at Fermilab revealed the W boson’s mass to be a staggering 77 million eV heavier than expected, challenging the foundations of the Standard Model of particle physics. Yet, a follow-up measurement from CERN matched predictions, igniting a quest to uncover possible errors in both experiments.