Determination of the structure of the K → πππ amplitudes from recent data
This Letter provides a new determination of the ten real coefficients that describe the structure of the K→πππ amplitudes in the limit where isospin is conserved and complex phases, due to either CP violation or final-state rescattering, are neglected. This determination is obtained through a fit to...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-12-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269322007286 |
| _version_ | 1798014205974020096 |
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| author | G. D'Ambrosio M. Knecht S. Neshatpour |
| author_facet | G. D'Ambrosio M. Knecht S. Neshatpour |
| author_sort | G. D'Ambrosio |
| collection | DOAJ |
| description | This Letter provides a new determination of the ten real coefficients that describe the structure of the K→πππ amplitudes in the limit where isospin is conserved and complex phases, due to either CP violation or final-state rescattering, are neglected. This determination is obtained through a fit to the data on the Dalitz-plot structures and partial-decay rates collected during the last twenty years by several high-precision experiments. The fitting procedure and the way the experimental data have been handled in the fit are discussed in detail. Our fit leads to a more precise determination of the coefficients describing the linear and quadratic slopes of the K→πππ amplitudes. |
| first_indexed | 2024-04-11T15:14:52Z |
| format | Article |
| id | doaj.art-5da1394646184f2fafd0a130d3174645 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-04-11T15:14:52Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-5da1394646184f2fafd0a130d31746452022-12-22T04:16:31ZengElsevierPhysics Letters B0370-26932022-12-01835137594Determination of the structure of the K → πππ amplitudes from recent dataG. D'Ambrosio0M. Knecht1S. Neshatpour2INFN-Sezione di Napoli, Complesso Universitario di Monte S. Angelo, Via Cintia Edificio 6, 80126 Napoli, ItalyCentre de Physique Théorique, CNRS/Aix-Marseille Univ./Univ. de Toulon (UMR 7332), CNRS-Luminy Case 907, 13288 Marseille Cedex 9, FranceINFN-Sezione di Napoli, Complesso Universitario di Monte S. Angelo, Via Cintia Edificio 6, 80126 Napoli, Italy; Corresponding author.This Letter provides a new determination of the ten real coefficients that describe the structure of the K→πππ amplitudes in the limit where isospin is conserved and complex phases, due to either CP violation or final-state rescattering, are neglected. This determination is obtained through a fit to the data on the Dalitz-plot structures and partial-decay rates collected during the last twenty years by several high-precision experiments. The fitting procedure and the way the experimental data have been handled in the fit are discussed in detail. Our fit leads to a more precise determination of the coefficients describing the linear and quadratic slopes of the K→πππ amplitudes.http://www.sciencedirect.com/science/article/pii/S0370269322007286 |
| spellingShingle | G. D'Ambrosio M. Knecht S. Neshatpour Determination of the structure of the K → πππ amplitudes from recent data Physics Letters B |
| title | Determination of the structure of the K → πππ amplitudes from recent data |
| title_full | Determination of the structure of the K → πππ amplitudes from recent data |
| title_fullStr | Determination of the structure of the K → πππ amplitudes from recent data |
| title_full_unstemmed | Determination of the structure of the K → πππ amplitudes from recent data |
| title_short | Determination of the structure of the K → πππ amplitudes from recent data |
| title_sort | determination of the structure of the k πππ amplitudes from recent data |
| url | http://www.sciencedirect.com/science/article/pii/S0370269322007286 |
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