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Lifetime of Polarized Fermions in Flight |
| SHI Zhi-Qiang1;NI Guang-Jiong2,3 |
| 1Faculty of Science, Xi’an Jiaotong University, Xi’an
710049
2Department of Physics, Fudan University, Shanghai 200433
3Department of Physics, Portland State University, Portland, OR 97207 USA |
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| Cite this article: |
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SHI Zhi-Qiang, NI Guang-Jiong 2002 Chin. Phys. Lett. 19 1427-1429 |
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Abstract Based on the parity violation in the standard model, we study the dependence of the lifetime on the helicity of an initial-state fermion in weak interactions. It is pointed out that if initial fermions in decays are longitudinally polarized, then the lifetime of right-handed polarized fermions is greater than that of left-handed polarized fermions in flight with the same speed in any one of inertial systems.
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| Keywords:
11.30.Er
11.30.Rd
12.15.-y
13.30.-a
13.35.Bv
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Published: 01 October 2002
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| PACS: |
11.30.Er
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(Charge conjugation, parity, time reversal, and other discrete symmetries)
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11.30.Rd
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(Chiral symmetries)
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12.15.-y
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(Electroweak interactions)
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13.30.-a
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(Decays of baryons)
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13.35.Bv
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(Decays of muons)
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