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Cabibbo Angle
Cabibbo is a surname. Notable people with the surname include: * Nicola Cabibbo (1935–2010), Italian physicist ** Cabibbo–Kobayashi–Maskawa matrix * Josef Samael (born 1974), American professional wrestler {{Short pages monitor ...
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Nicola Cabibbo
Nicola Cabibbo (10 April 1935 – 16 August 2010) was an Italian physicist best known for his work on the weak interaction, particularly his introduction of the Cabibbo angle. Interested in science from a young age, he studied physics at the Sapienza University of Rome, graduating in 1958 with a thesis completed under Bruno Touschek. Early life and education Nicola Cabibbo was born on 10 April 1935 in Rome, Italy to Silician parents; his father, Emanuele, was a lawyer and his mother was a housewife. He was interested in mathematics, physics and astronomy from an early age, and built his own radios. Despite growing up during World War II, his elementary school education ran uninterrupted, and he subsequently attended the Liceo Torquato Tasso. There, a textbook titled ''What Is Mathematics?'' sparked Cabibbo's interest in pursuing scientific studies. After the end of the war, Cabibbo also developed an interest in American literature and often frequented the library of the Unit ...
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Cabibbo–Kobayashi–Maskawa Matrix
In the Standard Model of particle physics, the Cabibbo–Kobayashi–Maskawa matrix, CKM matrix, quark mixing matrix, or KM matrix is a unitary matrix that contains information on the strength of the flavour-changing weak interaction. Technically, it specifies the mismatch of quantum states of quarks when they propagate freely and when they take part in the weak interactions. It is important in the understanding of CP violation. This matrix was introduced for three generations of quarks by Makoto Kobayashi and Toshihide Maskawa, adding one generation to the matrix previously introduced by Nicola Cabibbo. This matrix is also an extension of the GIM mechanism, which only includes two of the three current families of quarks. The matrix Predecessor – the Cabibbo matrix In 1963, Nicola Cabibbo introduced the Cabibbo angle () to preserve the universality of the weak interaction. Cabibbo was inspired by previous work by Murray Gell-Mann and Maurice Lévy, on the effectivel ...
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