Sheldon+Glashow

= = ﻿ **Sheldon Glashow **

Nobel Prize in Physics 1979: "...awarded jointly to **Sheldon Lee Glashow,** Abdus Salam and Steven Weinberg //"for their contributions to the theory of the unified weak and electromagnetic interaction between elementary particles, including, inter alia, the prediction of the weak neutral current"//."

Backround Information
 * Glashow was born in Manhattan in 1932 after his parents moved from Bobruisk
 * He became interested in science at a young age; his older brother's taught him about the law of falling bodies and chemistry
 * Attended the Bronx High School of Science along with Steven Weinberg
 * Glashow then attended Cornell University and after, Harvard for graduate school

Charm Quark Theory
 * In the 1960s, Abdus Salam and Steven Weinberg proposed a theory that linked electromagnetic and weak forces.
 * One problem was that this theory only applied to leptons (one of two basic particles)
 * Glashow demonstrated that it could also apply to quarks (the second basic particle)
 * It was already known that there were three types of quarks: up, down and strange quarks
 * Glashow added charm quark
 * His prediction was confirmed by research at the European Center for Nuclear Research
 * In 1974, an antiparticle was found for the charm quark (anticharm quark)

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Quarks


 * A quark is an elemantary particle and a major component of matter
 * Combine to form particles called hadrons (more commonly known as protons and neutrons)
 * Quarks can only be found in hadrons [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Standard_Model_of_Elementary_Particles.svg/544px-Standard_Model_of_Elementary_Particles.svg.png width="379" height="387" align="right" caption="File:Standard Model of Elementary Particles.svg" link="http://upload.wikimedia.org/wikipedia/commons/0/00/Standard_Model_of_Elementary_Particles.svg"]]

 

Other Discoveries
 * 1974: Glashow and Howard Georgi to produce a theory that ties strong and electroweak theories.
 * Both tried to show that both forces can be thought of as versions of the same basic force
 * It's validity has not yet been confirmed



Sources

"Quark - Wikipedia, the free encyclopedia." //Wikipedia, the free encyclopedia//. N.p., n.d. Web. 8 June 2011. []

"Sheldon Glashow - Autobiography." //Nobelprize.org//. N.p., n.d. Web. 8 June 2011. [].

"Sheldon L. Glashow Biography | BookRags.com." //BookRags.com | Study Guides, Lesson Plans, Book Summaries and more//. N.p., n.d. Web. 8 June 2011.

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