Axion models with generation-dependent Peccei-Quinn charges can lead to flavor-changing neutral currents, thus motivating QCD axion searches at precision flavor experiments. We rigorously derive limits on the most general effective flavor-violating couplings from current measurements and assess their discovery potential. For two-body decays, we use available experimental data to derive limits on decay rates for all flavor transitions. Axion contributions to neutral-meson mixing are calculated in a systematic way using chiral perturbation theory and operator product expansion. We also discuss in detail baryonic decays and three-body meson decays, which can lead to the best search strategies for some of the couplings. For instance, a strong limit on the transition can be derived from the supernova SN 1987A. In the near future, dedicated searches for decays at ongoing experiments could potentially test Peccei-Quinn breaking scales up to at NA62 or KOTO and up to at Belle II or BES III.
{ "_oai": { "updated": "2021-08-29T10:09:44Z", "id": "oai:repo.scoap3.org:55920", "sets": [ "PRD" ] }, "authors": [ { "raw_name": "Jorge Martin Camalich", "affiliations": [ { "country": "Spain", "value": "Instituto de Astrof\u00edsica de Canarias, s/n, E-38205, La Laguna, Tenerife, Spain" }, { "country": "Spain", "value": "Departamento de Astrof\u00edsica, Universidad de La Laguna, E-38206, La Laguna, Tenerife, Spain" } ], "surname": "Camalich", "given_names": "Jorge Martin", "full_name": "Camalich, Jorge Martin" }, { "raw_name": "Maxim Pospelov", "affiliations": [ { "country": "USA", "value": "School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA" }, { "country": "USA", "value": "William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA" } ], "surname": "Pospelov", "given_names": "Maxim", "full_name": "Pospelov, Maxim" }, { "raw_name": "Pham Ngoc Hoa Vuong", "affiliations": [ { "country": "France", "value": "Laboratoire de Physique Subatomique et de Cosmologie, Universit\u00e9 Grenoble-Alpes, CNRS/IN2P3, Grenoble INP, 38000 Grenoble, France" } ], "surname": "Vuong", "given_names": "Pham Ngoc Hoa", "full_name": "Vuong, Pham Ngoc Hoa" }, { "raw_name": "Robert Ziegler", "affiliations": [ { "country": "CERN", "value": "Theoretical Physics Department, CERN, 1 Esplanade des Particules, 1211 Geneva 23, Switzerland" }, { "country": "Germany", "value": "Institut f\u00fcr Theoretische Teilchenphysik (TTP), Karlsruher Institut f\u00fcr Technologie (KIT), 76131 Karlsruhe, Germany" } ], "surname": "Ziegler", "given_names": "Robert", "full_name": "Ziegler, Robert" }, { "raw_name": "Jure Zupan", "affiliations": [ { "country": "USA", "value": "Department of Physics, University of Cincinnati, Cincinnati, Ohio 45221, USA" } ], "surname": "Zupan", "given_names": "Jure", "full_name": "Zupan, Jure" } ], "titles": [ { "source": "APS", "title": "Quark flavor phenomenology of the QCD axion" } ], "dois": [ { "value": "10.1103/PhysRevD.102.015023" } ], "publication_info": [ { "journal_volume": "102", "journal_title": "Physical Review D", "material": "article", "journal_issue": "1", "year": 2020 } ], "$schema": "http://repo.scoap3.org/schemas/hep.json", "acquisition_source": { "date": "2021-08-25T10:41:47.407332", "source": "APS", "method": "APS", "submission_number": "810b323c058f11ecb53772fd3742099d" }, "page_nr": [ 24 ], "license": [ { "url": "https://creativecommons.org/licenses/by/4.0/", "license": "CC-BY-4.0" } ], "copyright": [ { "statement": "Published by the American Physical Society", "year": "2020" } ], "control_number": "55920", "record_creation_date": "2020-07-27T16:30:05.612120", "_files": [ { "checksum": "md5:8583d8e518374bad7e5f49fe37a29c18", "filetype": "pdf", "bucket": "12cbfc46-cbe9-4da5-961f-63e4086a4fdf", "version_id": "3e801a62-01b5-4b11-8c2f-e8d5bcbdfdd9", "key": "10.1103/PhysRevD.102.015023.pdf", "size": 649586 }, { "checksum": "md5:a51cd1820d9a4048a2386ada26737cb0", "filetype": "xml", "bucket": "12cbfc46-cbe9-4da5-961f-63e4086a4fdf", "version_id": "064d90fe-16f3-4e4c-8a10-c5f250d26055", "key": "10.1103/PhysRevD.102.015023.xml", "size": 648255 } ], "collections": [ { "primary": "HEP" }, { "primary": "Citeable" }, { "primary": "Published" } ], "arxiv_eprints": [ { "categories": [ "hep-ph", "hep-ex" ], "value": "2002.04623" } ], "abstracts": [ { "source": "APS", "value": "Axion models with generation-dependent Peccei-Quinn charges can lead to flavor-changing neutral currents, thus motivating QCD axion searches at precision flavor experiments. We rigorously derive limits on the most general effective flavor-violating couplings from current measurements and assess their discovery potential. For two-body decays, we use available experimental data to derive limits on <math><mi>q</mi><mo>\u2192</mo><msup><mi>q</mi><mo>\u2032</mo></msup><mi>a</mi></math> decay rates for all flavor transitions. Axion contributions to neutral-meson mixing are calculated in a systematic way using chiral perturbation theory and operator product expansion. We also discuss in detail baryonic decays and three-body meson decays, which can lead to the best search strategies for some of the couplings. For instance, a strong limit on the <math><mi>\u039b</mi><mo>\u2192</mo><mi>n</mi><mi>a</mi></math> transition can be derived from the supernova SN 1987A. In the near future, dedicated searches for <math><mi>q</mi><mo>\u2192</mo><msup><mi>q</mi><mo>\u2032</mo></msup><mi>a</mi></math> decays at ongoing experiments could potentially test Peccei-Quinn breaking scales up to <math><msup><mn>10</mn><mn>12</mn></msup><mtext> </mtext><mtext> </mtext><mi>GeV</mi></math> at NA62 or KOTO and up to <math><msup><mn>10</mn><mn>9</mn></msup><mtext> </mtext><mtext> </mtext><mi>GeV</mi></math> at Belle II or BES III." } ], "imprints": [ { "date": "2020-07-27", "publisher": "APS" } ] }