We provide a systematic treatment of the previously discovered power- enhanced QED corrections to the leptonic decay B q → μ + μ − (q = d, s) in the frame- work of soft-collinear effective theory (SCET). Employing two-step matching on SCETI and SCETII, and the respective renormalization group equations, we sum the leading- logarithmic QED corrections and the mixed QED-QCD corrections to all orders in the couplings for the matrix element of the semileptonic weak effective operator Q 9. We pro- pose a treatment of the B-meson decay constant and light-cone distribution amplitude in the presence of process-specific QED corrections. Finally we include ultrasoft photon radiation and provide updated values of the non-radiative and radiative branching fractions of B q → μ + μ − decay that include the double-logarithmic QED and QCD corrections.
{ "_oai": { "updated": "2022-11-22T15:30:22Z", "id": "oai:repo.scoap3.org:50705", "sets": [ "JHEP" ] }, "authors": [ { "affiliations": [ { "country": "Germany", "value": "Physik Department T31, Technische Universit\u00e4t M\u00fcnchen, James-Franck-Stra\u00dfe 1, Garching, D-85748, Germany", "organization": "Technische Universit\u00e4t M\u00fcnchen" } ], "surname": "Beneke", "given_names": "Martin", "full_name": "Beneke, Martin" }, { "affiliations": [ { "country": "Germany", "value": "Physik Department T31, Technische Universit\u00e4t M\u00fcnchen, James-Franck-Stra\u00dfe 1, Garching, D-85748, Germany", "organization": "Technische Universit\u00e4t M\u00fcnchen" } ], "surname": "Bobeth", "email": "christoph.bobeth@tum.de", "full_name": "Bobeth, Christoph", "given_names": "Christoph" }, { "affiliations": [ { "country": "Germany", "value": "Physik Department T31, Technische Universit\u00e4t M\u00fcnchen, James-Franck-Stra\u00dfe 1, Garching, D-85748, Germany", "organization": "Technische Universit\u00e4t M\u00fcnchen" } ], "surname": "Szafron", "email": "robert.szafron@cern.ch", "full_name": "Szafron, Robert", "given_names": "Robert" } ], "titles": [ { "source": "Springer", "title": "Power-enhanced leading-logarithmic QED corrections to B q \u2192 \u03bc + \u03bc \u2212" } ], "dois": [ { "value": "10.1007/JHEP10(2019)232" } ], "publication_info": [ { "page_end": "64", "journal_title": "Journal of High Energy Physics", "material": "article", "journal_volume": "2019", "artid": "JHEP10(2019)232", "year": 2019, "page_start": "1", "journal_issue": "10" } ], "$schema": "http://repo.scoap3.org/schemas/hep.json", "acquisition_source": { "date": "2022-11-22T15:30:19.622717", "source": "Springer", "method": "Springer", "submission_number": "870dbe746a7a11eda33ab6e03099cfc1" }, "page_nr": [ 64 ], "license": [ { "url": "https://creativecommons.org/licenses//by/4", "license": "CC-BY-4" } ], "copyright": [ { "holder": "The Author(s)", "year": "2019" } ], "control_number": "50705", "record_creation_date": "2019-11-01T13:30:39.267519", "_files": [ { "checksum": "md5:1f2efbf4e99edcb67460c82ec2f69484", "filetype": "xml", "bucket": "b678f950-4c69-4d29-8e03-41014ad866e9", "version_id": "9903e703-5e9d-4c7a-aa12-2340746d8fa4", "key": "10.1007/JHEP10(2019)232.xml", "size": 12817 }, { "checksum": "md5:1bf61c775b1c437d7bfd2e1a763f9e09", "filetype": "pdf/a", "bucket": "b678f950-4c69-4d29-8e03-41014ad866e9", "version_id": "0774160c-9502-4307-89ff-b7c37115b0b6", "key": "10.1007/JHEP10(2019)232_a.pdf", "size": 1234363 } ], "collections": [ { "primary": "Journal of High Energy Physics" } ], "arxiv_eprints": [ { "categories": [ "hep-ph" ], "value": "1908.07011" } ], "abstracts": [ { "source": "Springer", "value": "We provide a systematic treatment of the previously discovered power- enhanced QED corrections to the leptonic decay B q \u2192 \u03bc + \u03bc \u2212 (q = d, s) in the frame- work of soft-collinear effective theory (SCET). Employing two-step matching on SCETI and SCETII, and the respective renormalization group equations, we sum the leading- logarithmic QED corrections and the mixed QED-QCD corrections to all orders in the couplings for the matrix element of the semileptonic weak effective operator Q 9. We pro- pose a treatment of the B-meson decay constant and light-cone distribution amplitude in the presence of process-specific QED corrections. Finally we include ultrasoft photon radiation and provide updated values of the non-radiative and radiative branching fractions of B q \u2192 \u03bc + \u03bc \u2212 decay that include the double-logarithmic QED and QCD corrections." } ], "imprints": [ { "date": "2019-10-22", "publisher": "Springer" } ] }