In this episode, we are thrilled to host the renowned physicist, Dr. Kotwal, to explore the implications of the new and precise measurement of the W boson mass. The W boson, a mediator of the weak force between elementary particles, has its mass heavily constrained by the symmetries of the Standard Model (SM) of particle physics. Therefore, measuring the mass of the W boson poses a stringent test of the SM.

Dr. Kotwal discusses the Collider Detector at Fermilab (CDF) Collaboration's recent findings, which unexpectedly revealed that the mass of the W boson was significantly higher than the SM predicts. This discrepancy, measured at an impressive 7 standard deviations, is drawn from data collected in proton-antiproton collisions at the Tevatron particle accelerator.

Delving into the implications of this finding, Dr. Kotwal helps listeners understand the consequences of this significant tension with the SM expectation. He takes us through the exciting journey of how a sample of approximately 4 million W boson candidates was used to obtain the most precise measurement of the W boson mass to date.

Join us as we explore what this means for the future of particle physics and our understanding of the universe.

Keywords: Dr. Kotwal, W Boson, Collider Detector at Fermilab, Tevatron particle accelerator, Standard Model, Proton-Antiproton Collisions, Particle Physics.

W bosons mediate the weak interaction, one of the fundamental forces in physics. https://doi.org/10.1126/science.abk1781 High-precision measurement of the W boson mass with the CDF II detector