The new round of experiments, MEG II, COMET/Mu2e, and Mu3e, would soon start to push the , conversion, and frontier, while Belle II would probe and . In the general two Higgs doublet model with extra Yukawa couplings, we show that all these processes probe the lepton flavor violating (LFV) dipole transition that arises from the two loop mechanism, with scalar-induced contact terms subdominant. This is because existing data suggest the extra Yukawa couplings , while and , with the usual Yukawa coupling of the Standard Model (SM), where and enter the and two loop amplitudes, respectively. With the decay rate basically consistent with SM expectation, together with the mixing constraint, we show that would also be consistent with SM, while and decays would be out of reach of projected sensitivities, in strong contrast with some models motivated by the B anomalies.
{ "_oai": { "updated": "2021-08-29T15:39:52Z", "id": "oai:repo.scoap3.org:58714", "sets": [ "PRD" ] }, "authors": [ { "raw_name": "Wei-Shu Hou", "affiliations": [ { "country": "Taiwan", "value": "Department of Physics, National Taiwan University, Taipei 10617, Taiwan" } ], "surname": "Hou", "given_names": "Wei-Shu", "full_name": "Hou, Wei-Shu" }, { "raw_name": "Girish Kumar", "affiliations": [ { "country": "Taiwan", "value": "Department of Physics, National Taiwan University, Taipei 10617, Taiwan" } ], "surname": "Kumar", "given_names": "Girish", "full_name": "Kumar, Girish" } ], "titles": [ { "source": "APS", "title": "Muon flavor violation in two-Higgs-doublet model with extra Yukawa couplings" } ], "dois": [ { "value": "10.1103/PhysRevD.102.115017" } ], "publication_info": [ { "journal_volume": "102", "journal_title": "Physical Review D", "material": "article", "journal_issue": "11", "year": 2020 } ], "$schema": "http://repo.scoap3.org/schemas/hep.json", "acquisition_source": { "date": "2021-08-25T10:43:29.392671", "source": "APS", "method": "APS", "submission_number": "810b323c058f11ecb53772fd3742099d" }, "page_nr": [ 12 ], "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": "58714", "record_creation_date": "2020-12-10T17:30:07.029729", "_files": [ { "checksum": "md5:8b2234584baf1bfc1e5de48a5d3c2da8", "filetype": "pdf", "bucket": "c795a7a5-3f29-48be-9128-8c362a71f6a0", "version_id": "dfb6780d-c72e-44b2-af40-d5e975468f98", "key": "10.1103/PhysRevD.102.115017.pdf", "size": 469267 }, { "checksum": "md5:c9c238450ba41f9d809257da40abfb82", "filetype": "xml", "bucket": "c795a7a5-3f29-48be-9128-8c362a71f6a0", "version_id": "e32c2733-1602-4139-ac81-50be67bb3b29", "key": "10.1103/PhysRevD.102.115017.xml", "size": 315188 } ], "collections": [ { "primary": "HEP" }, { "primary": "Citeable" }, { "primary": "Published" } ], "arxiv_eprints": [ { "categories": [ "hep-ph" ], "value": "2008.08469" } ], "abstracts": [ { "source": "APS", "value": "The new round of experiments, MEG II, COMET/Mu2e, and Mu3e, would soon start to push the <math><mi>\u03bc</mi><mo>\u2192</mo><mi>e</mi><mi>\u03b3</mi></math>, <math><mi>\u03bc</mi><mi>N</mi><mo>\u2192</mo><mi>e</mi><mi>N</mi></math> conversion, and <math><mi>\u03bc</mi><mo>\u2192</mo><mn>3</mn><mi>e</mi></math> frontier, while Belle II would probe <math><mi>\u03c4</mi><mo>\u2192</mo><mi>\u03bc</mi><mi>\u03b3</mi></math> and <math><mi>\u03c4</mi><mo>\u2192</mo><mn>3</mn><mi>\u03bc</mi></math>. In the general two Higgs doublet model with extra Yukawa couplings, we show that all these processes probe the lepton flavor violating (LFV) dipole transition that arises from the two loop mechanism, with scalar-induced contact terms subdominant. This is because existing data suggest the extra Yukawa couplings <math><msub><mi>\u03c1</mi><mrow><mi>\u03bc</mi><mi>e</mi></mrow></msub><mo>,</mo><msub><mi>\u03c1</mi><mrow><mi>e</mi><mi>e</mi></mrow></msub><mo>\u2272</mo><msub><mi>\u03bb</mi><mi>e</mi></msub></math>, while <math><msub><mi>\u03c1</mi><mrow><mi>\u03c4</mi><mi>\u03bc</mi></mrow></msub><mo>,</mo><msub><mi>\u03c1</mi><mrow><mi>\u03c4</mi><mi>\u03c4</mi></mrow></msub><mo>\u2272</mo><msub><mi>\u03bb</mi><mi>\u03c4</mi></msub></math> and <math><msub><mi>\u03c1</mi><mrow><mi>t</mi><mi>t</mi></mrow></msub><mo>\u2272</mo><msub><mi>\u03bb</mi><mi>t</mi></msub></math>, with <math><msub><mi>\u03bb</mi><mi>i</mi></msub></math> the usual Yukawa coupling of the Standard Model (SM), where <math><msub><mi>\u03c1</mi><mrow><mi>\u03bc</mi><mi>e</mi></mrow></msub><msub><mi>\u03c1</mi><mrow><mi>t</mi><mi>t</mi></mrow></msub></math> and <math><msub><mi>\u03c1</mi><mrow><mi>\u03c4</mi><mi>\u03bc</mi></mrow></msub><msub><mi>\u03c1</mi><mrow><mi>t</mi><mi>t</mi></mrow></msub></math> enter the <math><mi>\u03bc</mi><mi>e</mi><mi>\u03b3</mi></math> and <math><mi>\u03c4</mi><mi>\u03bc</mi><mi>\u03b3</mi></math> two loop amplitudes, respectively. With the <math><msub><mi>B</mi><mi>s</mi></msub><mo>\u2192</mo><mi>\u03bc</mi><mi>\u03bc</mi></math> decay rate basically consistent with SM expectation, together with the <math><msub><mi>B</mi><mi>s</mi></msub></math> mixing constraint, we show that <math><msub><mi>B</mi><mi>s</mi></msub><mo>\u2192</mo><mi>\u03c4</mi><mi>\u03c4</mi></math> would also be consistent with SM, while <math><msub><mi>B</mi><mi>s</mi></msub><mo>\u2192</mo><mi>\u03c4</mi><mi>\u03bc</mi></math> and <math><mi>B</mi><mo>\u2192</mo><mi>K</mi><mi>\u03c4</mi><mi>\u03bc</mi></math> decays would be out of reach of projected sensitivities, in strong contrast with some models motivated by the B anomalies." } ], "imprints": [ { "date": "2020-12-10", "publisher": "APS" } ] }