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  • BBC Science Focus Magazine

    W BOSON: IS ABOUT TO BREAK PHYSICS?

    May 11, 2022 3 minutes
    by PROF JON BUTTERWORTH

    A new measurement from an old experiment may have just given us a huge clue to some big unanswered questions in physics.

    The Collider Detector at Fermilab (CDF), a particle accelerator experiment which operated until 2011, recently caused a stir by re-measuring the mass of a particle known as the ‘W boson’.

    Each of the four fundamental forces (the strong force, the weak force, electromagnetism and gravity) has associated particles which ‘carry’

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