π0-η-η′ mixing from V → Pγ and P → Vγ decays
An enhanced phenomenological model that includes isospin-symmetry breaking is presented in this letter. The model is then used in a number of statistical fits to the most recent experimental data for the radiative transitions VPγ (V=ρ, K⁎, ω, ϕ and P=π, K, η, η′) and estimations for the mixing angle...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-08-01
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| Series: | Physics Letters B |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269320303385 |
| _version_ | 1818059531998986240 |
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| author | Rafel Escribano Emilio Royo |
| author_facet | Rafel Escribano Emilio Royo |
| author_sort | Rafel Escribano |
| collection | DOAJ |
| description | An enhanced phenomenological model that includes isospin-symmetry breaking is presented in this letter. The model is then used in a number of statistical fits to the most recent experimental data for the radiative transitions VPγ (V=ρ, K⁎, ω, ϕ and P=π, K, η, η′) and estimations for the mixing angles amongst the three pseudoscalar states with vanishing third-component of isospin are obtained. The quality of the performed fits is good, e.g. χmin2/d.o.f=1.9. The current experimental uncertainties allow for isospin-symmetry violations with a confidence level of approximately 2.5σ. |
| first_indexed | 2024-12-10T13:18:01Z |
| format | Article |
| id | doaj.art-fac61d1b90be40fbb827ffdd9382e7e1 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-10T13:18:01Z |
| publishDate | 2020-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-fac61d1b90be40fbb827ffdd9382e7e12022-12-22T01:47:28ZengElsevierPhysics Letters B0370-26932020-08-01807135534π0-η-η′ mixing from V → Pγ and P → Vγ decaysRafel Escribano0Emilio Royo1Grup de Física Teòrica, Departament de Física, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Barcelona, Spain; Institut de Física d'Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra, Barcelona, SpainGrup de Física Teòrica, Departament de Física, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Barcelona, Spain; Corresponding author.An enhanced phenomenological model that includes isospin-symmetry breaking is presented in this letter. The model is then used in a number of statistical fits to the most recent experimental data for the radiative transitions VPγ (V=ρ, K⁎, ω, ϕ and P=π, K, η, η′) and estimations for the mixing angles amongst the three pseudoscalar states with vanishing third-component of isospin are obtained. The quality of the performed fits is good, e.g. χmin2/d.o.f=1.9. The current experimental uncertainties allow for isospin-symmetry violations with a confidence level of approximately 2.5σ.http://www.sciencedirect.com/science/article/pii/S0370269320303385Radiative decaysMixing anglesFlavour symmetryIsospin symmetryU(1)A anomaly |
| spellingShingle | Rafel Escribano Emilio Royo π0-η-η′ mixing from V → Pγ and P → Vγ decays Physics Letters B Radiative decays Mixing angles Flavour symmetry Isospin symmetry U(1)A anomaly |
| title | π0-η-η′ mixing from V → Pγ and P → Vγ decays |
| title_full | π0-η-η′ mixing from V → Pγ and P → Vγ decays |
| title_fullStr | π0-η-η′ mixing from V → Pγ and P → Vγ decays |
| title_full_unstemmed | π0-η-η′ mixing from V → Pγ and P → Vγ decays |
| title_short | π0-η-η′ mixing from V → Pγ and P → Vγ decays |
| title_sort | π0 η η mixing from v pγ and p vγ decays |
| topic | Radiative decays Mixing angles Flavour symmetry Isospin symmetry U(1)A anomaly |
| url | http://www.sciencedirect.com/science/article/pii/S0370269320303385 |
| work_keys_str_mv | AT rafelescribano p0ēēmixingfromvpgandpvgdecays AT emilioroyo p0ēēmixingfromvpgandpvgdecays |