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  1. 19342

    In your article on experimental hints of a new subatomic particle, three values are quoted for a particular charge-parity violation, all with error bar. Given the large uncertainties in two of these, the three are undistinguishable. Yet you claim that they “don’t agree.” Does no one look at error bars any more? R.A. WilliamsLos Alamos, […]

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  2. Physics

    Particle decays hint at new matter

    A surprising disagreement between particle-physics theory and a Japan-based research team's measurement of decay rates of matter and antimatter hints that unknown, heavy subatomic particles may exist.

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  3. Widows show third-year rebound

    Women whose husbands die largely overcome their grief-related problems, including depression and social isolation, by about 3 years after their loss, according to a national study.