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Title:
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Proton Decay in higher dimensions
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Author:
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Turbasu Biswas
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Advisor:
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Balachandran, Sathiapalan |
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Degree:
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M.Sc |
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Main Subjects:
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Physics
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Institution:
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Anna University |
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Year:
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2004 |
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Pages:
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viii; 28p. |
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Abstract:
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Proton decay is used as a guiding principle for the search of a Grand unified theory. As a starting point minimal nonsupersymmetric SU(5) model is taken as it is the simplest possible grand unified model. Then modifications are discussed which ultimately leads to a supersymmetric GUT in 5 dimension. The extra dimension in this theory is compactified on a S1 / (Z2 x Z'2)orbifold. A new U(1)R symmetry is discussed which forces all 4 dimensional and five dimensional proton decay operators to be absent. But when supersymmetry breaks U(1)R symmetry breaks to R-Parity and hence makes the five dimensional operators nonzero. An estimate of proton lifetime based on this 5 dimensional operator is calculated which constraints the magnitude of the radius of compactification of the extra dimension. |
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URI:
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http://hdl.handle.net/123456789/135
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