Three-body final state interaction in η→3π updated
In view of the recent high-statistic KLOE data for the η→π+π−π0 decay, a new determination of the quark mass double ratio has been done. Our approach relies on a dispersive model that takes into account rescattering effects between three pions via subenergy unitarity. The latter is essential to repr...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2017-08-01
|
| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269317304550 |
| _version_ | 1831636836633542656 |
|---|---|
| author | P. Guo I.V. Danilkin C. Fernández-Ramírez V. Mathieu A.P. Szczepaniak |
| author_facet | P. Guo I.V. Danilkin C. Fernández-Ramírez V. Mathieu A.P. Szczepaniak |
| author_sort | P. Guo |
| collection | DOAJ |
| description | In view of the recent high-statistic KLOE data for the η→π+π−π0 decay, a new determination of the quark mass double ratio has been done. Our approach relies on a dispersive model that takes into account rescattering effects between three pions via subenergy unitarity. The latter is essential to reproduce the Dalitz plot distribution. A simultaneous description of the KLOE and WASA-at-COSY data is achieved in terms of just two real parameters. From a global fit, we determine Q=21.6±1.1. The predicted slope parameter for the neutral channel α=−0.025±0.004 is in reasonable agreement with the PDG average value. |
| first_indexed | 2024-12-19T06:40:15Z |
| format | Article |
| id | doaj.art-93374016d72e427cae12357beb8ad66c |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-19T06:40:15Z |
| publishDate | 2017-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-93374016d72e427cae12357beb8ad66c2022-12-21T20:32:06ZengElsevierPhysics Letters B0370-26932017-08-01771497502Three-body final state interaction in η→3π updatedP. Guo0I.V. Danilkin1C. Fernández-Ramírez2V. Mathieu3A.P. Szczepaniak4Department of Physics and Engineering, California State University, Bakersfield, CA 93311, USAInstitut für Kernphysik and PRISMA Cluster of Excellence, Johannes Gutenberg Universität, D-55099 Mainz, Germany; SSC RF ITEP, Bolshaya Cheremushkinskaya 25, 117218 Moscow, Russia; Corresponding author.Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Ciudad de México 04510, MexicoCenter for Exploration of Energy and Matter, Indiana University, Bloomington, IN 47403, USA; Physics Department, Indiana University, Bloomington, IN 47405, USACenter for Exploration of Energy and Matter, Indiana University, Bloomington, IN 47403, USA; Physics Department, Indiana University, Bloomington, IN 47405, USA; Theory Center, Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USAIn view of the recent high-statistic KLOE data for the η→π+π−π0 decay, a new determination of the quark mass double ratio has been done. Our approach relies on a dispersive model that takes into account rescattering effects between three pions via subenergy unitarity. The latter is essential to reproduce the Dalitz plot distribution. A simultaneous description of the KLOE and WASA-at-COSY data is achieved in terms of just two real parameters. From a global fit, we determine Q=21.6±1.1. The predicted slope parameter for the neutral channel α=−0.025±0.004 is in reasonable agreement with the PDG average value.http://www.sciencedirect.com/science/article/pii/S0370269317304550 |
| spellingShingle | P. Guo I.V. Danilkin C. Fernández-Ramírez V. Mathieu A.P. Szczepaniak Three-body final state interaction in η→3π updated Physics Letters B |
| title | Three-body final state interaction in η→3π updated |
| title_full | Three-body final state interaction in η→3π updated |
| title_fullStr | Three-body final state interaction in η→3π updated |
| title_full_unstemmed | Three-body final state interaction in η→3π updated |
| title_short | Three-body final state interaction in η→3π updated |
| title_sort | three body final state interaction in η 3π updated |
| url | http://www.sciencedirect.com/science/article/pii/S0370269317304550 |
| work_keys_str_mv | AT pguo threebodyfinalstateinteractioninē3pupdated AT ivdanilkin threebodyfinalstateinteractioninē3pupdated AT cfernandezramirez threebodyfinalstateinteractioninē3pupdated AT vmathieu threebodyfinalstateinteractioninē3pupdated AT apszczepaniak threebodyfinalstateinteractioninē3pupdated |