We perform a model-independent analysis of the magnetic and electric dipole moments of the muon and electron. We give expressions for the dipole moments in terms of operator coefficients of the low-energy effective field theory (LEFT) and the Standard Model effective field theory (SMEFT). We use one-loop renormalization group improved perturbation theory, including the one-loop matching from SMEFT onto LEFT, and one-loop lepton matrix elements of the effective-theory operators. Semileptonic four-fermion operators involving light quarks give sizable non-perturbative contributions to the dipole moments, which are included in our analysis. We find that only a very limited set of the SMEFT operators is able to generate the current deviation of the magnetic moment of the muon from its Standard Model expectation.
{ "_oai": { "updated": "2021-10-24T00:47:47Z", "id": "oai:repo.scoap3.org:63510", "sets": [ "JHEP" ] }, "authors": [ { "affiliations": [ { "country": "USA", "value": "Department of Physics, University of California at San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0319, USA", "organization": "University of California at San Diego" } ], "surname": "Aebischer", "email": "jaebischer@physics.ucsd.edu", "full_name": "Aebischer, Jason", "given_names": "Jason" }, { "affiliations": [ { "country": "USA", "value": "Department of Physics, University of California at San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0319, USA", "organization": "University of California at San Diego" } ], "surname": "Dekens", "email": "wdekens@physics.ucsd.edu", "full_name": "Dekens, Wouter", "given_names": "Wouter" }, { "affiliations": [ { "country": "USA", "value": "Department of Physics, University of California at San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0319, USA", "organization": "University of California at San Diego" } ], "surname": "Jenkins", "email": "ejenkins@ucsd.edu", "full_name": "Jenkins, Elizabeth", "given_names": "Elizabeth" }, { "affiliations": [ { "country": "USA", "value": "Department of Physics, University of California at San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0319, USA", "organization": "University of California at San Diego" } ], "surname": "Manohar", "email": "amanohar@ucsd.edu", "full_name": "Manohar, Aneesh", "given_names": "Aneesh" }, { "affiliations": [ { "country": "USA", "value": "Department of Physics, University of California at San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0319, USA", "organization": "University of California at San Diego" } ], "surname": "Sengupta", "email": "disengupta@physics.ucsd.edu", "full_name": "Sengupta, Dipan", "given_names": "Dipan" }, { "affiliations": [ { "country": "USA", "value": "Department of Physics, University of California at San Diego, 9500 Gilman Drive, La Jolla, CA, 92093-0319, USA", "organization": "University of California at San Diego" }, { "country": "Austria", "value": "University of Vienna, Faculty of Physics, Boltzmanngasse 5, Vienna, 1090, Austria", "organization": "University of Vienna, Faculty of Physics" } ], "surname": "Stoffer", "email": "peter.stoffer@univie.ac.at", "full_name": "Stoffer, Peter", "given_names": "Peter" } ], "titles": [ { "source": "Springer", "title": "Effective field theory interpretation of lepton magnetic and electric dipole moments" } ], "dois": [ { "value": "10.1007/JHEP07(2021)107" } ], "publication_info": [ { "page_end": "31", "journal_title": "Journal of High Energy Physics", "material": "article", "journal_volume": "2021", "artid": "JHEP07(2021)107", "year": 2021, "page_start": "1", "journal_issue": "7" } ], "$schema": "http://repo.scoap3.org/schemas/hep.json", "acquisition_source": { "date": "2021-10-24T00:34:11.841774", "source": "Springer", "method": "Springer", "submission_number": "85bc469e346111ecaa1b7aa32592193b" }, "page_nr": [ 31 ], "license": [ { "url": "https://creativecommons.org/licenses//by/4.0", "license": "CC-BY-4.0" } ], "copyright": [ { "holder": "The Author(s)", "year": "2021" } ], "control_number": "63510", "record_creation_date": "2021-07-19T15:30:19.661310", "_files": [ { "checksum": "md5:32acc83734c4fad7f26a70f0d08cf521", "filetype": "xml", "bucket": "1acaec14-f5c5-475b-83d6-6963215bebd1", "version_id": "c4cb4dff-b17b-4a8e-8a6d-24c3a3817929", "key": "10.1007/JHEP07(2021)107.xml", "size": 12967 }, { "checksum": "md5:e355b0aad03b46c9a436da2117362d16", "filetype": "pdf/a", "bucket": "1acaec14-f5c5-475b-83d6-6963215bebd1", "version_id": "a633c7de-8880-4de6-8943-ce416444470c", "key": "10.1007/JHEP07(2021)107_a.pdf", "size": 603434 } ], "collections": [ { "primary": "Journal of High Energy Physics" } ], "arxiv_eprints": [ { "categories": [ "hep-ph", "hep-ex" ], "value": "2102.08954" } ], "abstracts": [ { "source": "Springer", "value": "We perform a model-independent analysis of the magnetic and electric dipole moments of the muon and electron. We give expressions for the dipole moments in terms of operator coefficients of the low-energy effective field theory (LEFT) and the Standard Model effective field theory (SMEFT). We use one-loop renormalization group improved perturbation theory, including the one-loop matching from SMEFT onto LEFT, and one-loop lepton matrix elements of the effective-theory operators. Semileptonic four-fermion operators involving light quarks give sizable non-perturbative contributions to the dipole moments, which are included in our analysis. We find that only a very limited set of the SMEFT operators is able to generate the current deviation of the magnetic moment of the muon from its Standard Model expectation." } ], "imprints": [ { "date": "2021-07-16", "publisher": "Springer" } ] }