| THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS |
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Parameterization for Neutrino Mixing Matrix with Deviated Unitarity |
| LU Lei, WANG Wen-Yu, XIONG Zhao-Hua |
| Institute of Theoretical Physics, Beijing University of Technology, Beijing 100124 |
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| Cite this article: |
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LU Lei, WANG Wen-Yu, XIONG Zhao-Hua 2009 Chin. Phys. Lett. 26 081401 |
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Abstract Neutrino oscillation experiments provide the first evidence on non-zero neutrino masses and indicate new physics beyond the standard model. With Majorana neutrinos introduced to acquire tiny neutrino masses, it leads to the existence of more than three neutrino species, implying that the ordinary neutrino mixing matrix is only a part of the whole extended unitary mixing matrix and thus no longer unitary. We give a parameterization for a non-unitary neutrino mixing matrix under seesaw framework and further present a method to test the unitarity of the ordinary neutrino mixing matrix.
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| Keywords:
14.60.Pq
14.60.St
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Received: 23 January 2009
Published: 30 July 2009
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| PACS: |
14.60.Pq
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(Neutrino mass and mixing)
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14.60.St
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(Non-standard-model neutrinos, right-handed neutrinos, etc.)
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