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Dalitz plots and lineshape of $a_1(1260)$ from a relativistic three-body unitary approach
We formulate the final-state interaction of the a1(1260) resonance decay in a manifestly three-body unitary parametrization and fit it to the a1(1260) line shape measured by the ALEPH experiment. Dalitz plots calculated from this fit are presented. The work demonstrates the feasibility to numericall...
| Autores principales: | , , , |
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| Lenguaje: | eng |
| Publicado: |
2020
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevD.101.094018 https://dx.doi.org/10.1103/PhysRevD.103.019901 http://cds.cern.ch/record/2713261 |
| _version_ | 1780965326626750464 |
|---|---|
| author | Sadasivan, D. Mai, M. Akdag, H. Döring, M. |
| author_facet | Sadasivan, D. Mai, M. Akdag, H. Döring, M. |
| author_sort | Sadasivan, D. |
| collection | CERN |
| description | We formulate the final-state interaction of the a1(1260) resonance decay in a manifestly three-body unitary parametrization and fit it to the a1(1260) line shape measured by the ALEPH experiment. Dalitz plots calculated from this fit are presented. The work demonstrates the feasibility to numerically solve a previously derived amplitude and its generalization to isobars with spin and coupled channels. The model can also be applied to other meson decays and modified for the finite-volume problem as it arises in lattice QCD due to its manifest unitarity. |
| id | cern-2713261 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2020 |
| record_format | invenio |
| spelling | cern-27132612023-03-14T19:04:47Zdoi:10.1103/PhysRevD.101.094018doi:10.1103/PhysRevD.103.019901http://cds.cern.ch/record/2713261engSadasivan, D.Mai, M.Akdag, H.Döring, M.Dalitz plots and lineshape of $a_1(1260)$ from a relativistic three-body unitary approachnucl-exNuclear Physics - Experimenthep-phParticle Physics - Phenomenologynucl-thNuclear Physics - TheoryWe formulate the final-state interaction of the a1(1260) resonance decay in a manifestly three-body unitary parametrization and fit it to the a1(1260) line shape measured by the ALEPH experiment. Dalitz plots calculated from this fit are presented. The work demonstrates the feasibility to numerically solve a previously derived amplitude and its generalization to isobars with spin and coupled channels. The model can also be applied to other meson decays and modified for the finite-volume problem as it arises in lattice QCD due to its manifest unitarity.We formulate the final state interaction of the $a_1(1260)$ resonance decay in a manifestly three-body unitary parameterization and fit it to the $a_1(1260)$ lineshape measured by the ALEPH experiment. Dalitz plots calculated from this fit are presented. The work demonstrates the feasibility to numerically solve a previously derived amplitude and its generalization to isobars with spin and coupled channels. The model can also be applied to other meson decays and modified for the finite-volume problem as it arises in lattice QCD due to its manifest unitarity.arXiv:2002.12431oai:cds.cern.ch:27132612020-02-27 |
| spellingShingle | nucl-ex Nuclear Physics - Experiment hep-ph Particle Physics - Phenomenology nucl-th Nuclear Physics - Theory Sadasivan, D. Mai, M. Akdag, H. Döring, M. Dalitz plots and lineshape of $a_1(1260)$ from a relativistic three-body unitary approach |
| title | Dalitz plots and lineshape of $a_1(1260)$ from a relativistic three-body unitary approach |
| title_full | Dalitz plots and lineshape of $a_1(1260)$ from a relativistic three-body unitary approach |
| title_fullStr | Dalitz plots and lineshape of $a_1(1260)$ from a relativistic three-body unitary approach |
| title_full_unstemmed | Dalitz plots and lineshape of $a_1(1260)$ from a relativistic three-body unitary approach |
| title_short | Dalitz plots and lineshape of $a_1(1260)$ from a relativistic three-body unitary approach |
| title_sort | dalitz plots and lineshape of $a_1(1260)$ from a relativistic three-body unitary approach |
| topic | nucl-ex Nuclear Physics - Experiment hep-ph Particle Physics - Phenomenology nucl-th Nuclear Physics - Theory |
| url | https://dx.doi.org/10.1103/PhysRevD.101.094018 https://dx.doi.org/10.1103/PhysRevD.103.019901 http://cds.cern.ch/record/2713261 |
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