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Bill Barr siblings: Meet his brother Stephen Barr

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Bill Barr

Bill Barr is an American attorney who served as the 77th and 85th United States attorney general.

Bill Barr siblings: Meet his brother Stephen Barr

Bill Barr is the son of Donald Barr.

Stephen Barr is the younger brother of Bill Barr. He is an American physicist who is a professor emeritus of physics at the University of Delaware.

He is a member of the Bartol Research Institute at the University of Delaware Bartol Research Institute. He was elected a Fellow of the American Physical Society in 2011. The citation for his election read “for original contributions to grand unified theories, CP violation, and baryogenesis.”

In addition, he is the author of the article on “Grand Unified Theories” for the Encyclopedia of Physics. Most of his notable work includes co-discovering the much-studied flipped SU(5) scheme of unification, identifying the Barr–Zee diagram as an important source of electric dipole moment for basic particles such as the electron and neutron in many theories, and proposing the so-called Nelson–Barr mechanism as a solution to the strong CP problem.

Stephen Barr is married to Kathleen Whitney Barr and they have five children.

Does Bill Barr have a sister?

Bill Barr is one of four children and has three brothers.

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