Mixing of two-level unstable systems
| ISSN: |
1434-6052
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Physics
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| Notes: |
Abstract. Unstable particles can be consistently described in the framework of quantum field theory. Starting from the full S matrix amplitudes of $B^+ \rightarrow (2\pi, 3\pi) l^+ \nu$ decays as examples of processes where the $\rho-\omega$ resonances dominate, we propose a prescription for the mixing of two “quasi-physical” unstable states that differs from the one obtained from the diagonalization of the $M-\mathrm{i}\Gamma/2$ non-Hermitian Hamiltonian. We discuss some important consequences for CP violation in the $K_L-K_S$ system.
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| Type of Medium: |
Electronic Resource
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| URL: |