Key Particle Weighs in a Bit Heavy, Confounding Physicists :

Result, if confirmed, would present one of the biggest problems yet with scientists' detailed rulebook for the cosmos

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Italy , California , United States , Texas , Italian , Claudio Campagnari , Santa Barbara , Giorgio Chiarelli , Seanm Carroll , Dave Toback , University Of California , Texasam University , Italian National Institute For Nuclear Physics , Duke University , Fermi National Accelerator Lab , Italian National Institute , California Santa Barbara , Science Health , Quantum Mechanics , Aw Boson , Subatomic Particles ,