Nobel-winning physicist Martin Perl dies at age 87

Martin Perl, a Nobel Prize-winning physicist from Stanford University who discovered a subatomic particle known as the tau lepton, has died at age 87.

The university said the retired professor, one of two American scientists who shared the Nobel Prize for physics in 1995, died at Stanford Hospital on Tuesday.
He was recognized for work he did during the 1970s at the Stanford Linear Accelerator Center, a federally funded laboratory where scientists investigate the tiniest pieces of nature.

At the time Perl discovered the tau lepton, many physicists doubted the particle that would turn out to be a heavyweight cousin of the electron existed.

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