Tails of Instability and Decay: a Hydrodynamic Perspective
In the context of quantum field theory (QFT), unstable particles are associated with complex-valued poles of two-body scattering matrices in the unphysical sheet of rapidity space. The Breit-Wigner formula relates this pole to the mass and life-time of the particle, observed in scattering events....
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| Format: | Article |
| Language: | English |
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SciPost
2022-03-01
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| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.12.3.115 |