Complex-Mass Definition and the Structure of Unstable Particle’s Propagator
The propagators of unstable particles are considered in framework of the convolution representation. Spectral function is found for a special case when the propagator of scalar unstable particle has Breit-Wigner form. The expressions for the dressed propagators of unstable vector and spinor fields a...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2015/490238 |
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| _version_ | 1832549832096481280 |
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| author | Vladimir Kuksa |
| author_facet | Vladimir Kuksa |
| author_sort | Vladimir Kuksa |
| collection | DOAJ |
| description | The propagators of unstable particles are considered in framework of the convolution representation. Spectral function is found for a special case when the propagator of scalar unstable particle has Breit-Wigner form. The expressions for the dressed propagators of unstable vector and spinor fields are derived in an analytical way for this case. We obtain the propagators in modified Breit-Wigner forms which correspond to the complex-mass definition. |
| format | Article |
| id | doaj-art-f295282afc114db78e65c7401eef044a |
| institution | Kabale University |
| issn | 1687-7357 1687-7365 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in High Energy Physics |
| spelling | doaj-art-f295282afc114db78e65c7401eef044a2025-02-03T06:08:28ZengWileyAdvances in High Energy Physics1687-73571687-73652015-01-01201510.1155/2015/490238490238Complex-Mass Definition and the Structure of Unstable Particle’s PropagatorVladimir Kuksa0Research Institute of Physics, Southern Federal University, Pr. Stachky 194, Rostov-on-Don 344090, RussiaThe propagators of unstable particles are considered in framework of the convolution representation. Spectral function is found for a special case when the propagator of scalar unstable particle has Breit-Wigner form. The expressions for the dressed propagators of unstable vector and spinor fields are derived in an analytical way for this case. We obtain the propagators in modified Breit-Wigner forms which correspond to the complex-mass definition.http://dx.doi.org/10.1155/2015/490238 |
| spellingShingle | Vladimir Kuksa Complex-Mass Definition and the Structure of Unstable Particle’s Propagator Advances in High Energy Physics |
| title | Complex-Mass Definition and the Structure of Unstable Particle’s Propagator |
| title_full | Complex-Mass Definition and the Structure of Unstable Particle’s Propagator |
| title_fullStr | Complex-Mass Definition and the Structure of Unstable Particle’s Propagator |
| title_full_unstemmed | Complex-Mass Definition and the Structure of Unstable Particle’s Propagator |
| title_short | Complex-Mass Definition and the Structure of Unstable Particle’s Propagator |
| title_sort | complex mass definition and the structure of unstable particle s propagator |
| url | http://dx.doi.org/10.1155/2015/490238 |
| work_keys_str_mv | AT vladimirkuksa complexmassdefinitionandthestructureofunstableparticlespropagator |