QED-Corrections to Weak Decays
Important aspects of QED-corrections to hadronic decays are reviewed with emphasis on conceptual points such as infrared divergences and structure dependence. These matter are illustrated for the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Symmetry |
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| Online Access: | https://www.mdpi.com/2073-8994/13/11/2036 |
| _version_ | 1797508399879946240 |
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| author | Roman Zwicky |
| author_facet | Roman Zwicky |
| author_sort | Roman Zwicky |
| collection | DOAJ |
| description | Important aspects of QED-corrections to hadronic decays are reviewed with emphasis on conceptual points such as infrared divergences and structure dependence. These matter are illustrated for the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mi>e</mi><mo>+</mo></msup><msup><mi>e</mi><mo>−</mo></msup><mo>→</mo><mi>h</mi><mi>a</mi><mi>d</mi><mi>r</mi><mi>o</mi><mi>n</mi><mi>s</mi></mrow></semantics></math></inline-formula>, the leptonic decay <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mi>π</mi><mo>+</mo></msup><mo>→</mo><msup><mo>ℓ</mo><mo>+</mo></msup><mover accent="true"><mi>ν</mi><mo>¯</mo></mover></mrow></semantics></math></inline-formula> and the semileptonic decay <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>B</mi><mo>→</mo><mi>π</mi><msup><mo>ℓ</mo><mo>+</mo></msup><mover accent="true"><mi>ν</mi><mo>¯</mo></mover></mrow></semantics></math></inline-formula>. Aspects of structure dependence include the (non)-cancellation of hard-collinear logs (e.g., <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo form="prefix">ln</mo><msub><mi>m</mi><mo>ℓ</mo></msub></mrow></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo form="prefix">ln</mo><msub><mi>m</mi><mi>π</mi></msub></mrow></semantics></math></inline-formula>) of charged final states. |
| first_indexed | 2024-03-10T05:01:33Z |
| format | Article |
| id | doaj.art-d6f87654c15d40ac8bd7128ac4c6fe93 |
| institution | Directory Open Access Journal |
| issn | 2073-8994 |
| language | English |
| last_indexed | 2024-03-10T05:01:33Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Symmetry |
| spelling | doaj.art-d6f87654c15d40ac8bd7128ac4c6fe932023-11-23T01:43:48ZengMDPI AGSymmetry2073-89942021-10-011311203610.3390/sym13112036QED-Corrections to Weak DecaysRoman Zwicky0Higgs Centre for Theoretical Physics, School of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ, UKImportant aspects of QED-corrections to hadronic decays are reviewed with emphasis on conceptual points such as infrared divergences and structure dependence. These matter are illustrated for the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mi>e</mi><mo>+</mo></msup><msup><mi>e</mi><mo>−</mo></msup><mo>→</mo><mi>h</mi><mi>a</mi><mi>d</mi><mi>r</mi><mi>o</mi><mi>n</mi><mi>s</mi></mrow></semantics></math></inline-formula>, the leptonic decay <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mi>π</mi><mo>+</mo></msup><mo>→</mo><msup><mo>ℓ</mo><mo>+</mo></msup><mover accent="true"><mi>ν</mi><mo>¯</mo></mover></mrow></semantics></math></inline-formula> and the semileptonic decay <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>B</mi><mo>→</mo><mi>π</mi><msup><mo>ℓ</mo><mo>+</mo></msup><mover accent="true"><mi>ν</mi><mo>¯</mo></mover></mrow></semantics></math></inline-formula>. Aspects of structure dependence include the (non)-cancellation of hard-collinear logs (e.g., <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo form="prefix">ln</mo><msub><mi>m</mi><mo>ℓ</mo></msub></mrow></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo form="prefix">ln</mo><msub><mi>m</mi><mi>π</mi></msub></mrow></semantics></math></inline-formula>) of charged final states.https://www.mdpi.com/2073-8994/13/11/2036QED-correctionsweak decays |
| spellingShingle | Roman Zwicky QED-Corrections to Weak Decays Symmetry QED-corrections weak decays |
| title | QED-Corrections to Weak Decays |
| title_full | QED-Corrections to Weak Decays |
| title_fullStr | QED-Corrections to Weak Decays |
| title_full_unstemmed | QED-Corrections to Weak Decays |
| title_short | QED-Corrections to Weak Decays |
| title_sort | qed corrections to weak decays |
| topic | QED-corrections weak decays |
| url | https://www.mdpi.com/2073-8994/13/11/2036 |
| work_keys_str_mv | AT romanzwicky qedcorrectionstoweakdecays |