Rare Decays in CMS
The CMS experiment at the LHC has advanced precision measurements of rare B-meson and charm decays, offering insights into phenomena beyond the Standard Model (SM). This paper highlights key results from Run 2 and Run 3 data, including the branching fraction and lifetime of <inline-formula><...
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2025-01-01
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| author | Giacomo Fedi |
| author_facet | Giacomo Fedi |
| author_sort | Giacomo Fedi |
| collection | DOAJ |
| description | The CMS experiment at the LHC has advanced precision measurements of rare B-meson and charm decays, offering insights into phenomena beyond the Standard Model (SM). This paper highlights key results from Run 2 and Run 3 data, including the branching fraction and lifetime of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>B</mi><mi>s</mi></msub><mo>→</mo><msup><mi>μ</mi><mo>+</mo></msup><msup><mi>μ</mi><mo>−</mo></msup></mrow></semantics></math></inline-formula>, angular analyses of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mi>B</mi><mn>0</mn></msup><mo>→</mo><msup><mi>K</mi><mrow><mo>*</mo><mn>0</mn></mrow></msup><msup><mi>μ</mi><mo>+</mo></msup><msup><mi>μ</mi><mo>−</mo></msup></mrow></semantics></math></inline-formula>, the first observation of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>J</mi><mo>/</mo><mi>ψ</mi><mo>→</mo><msup><mi>μ</mi><mo>+</mo></msup><msup><mi>μ</mi><mo>−</mo></msup><msup><mi>μ</mi><mo>+</mo></msup><msup><mi>μ</mi><mo>−</mo></msup></mrow></semantics></math></inline-formula>, and stringent limits on <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mi>D</mi><mn>0</mn></msup><mo>→</mo><msup><mi>μ</mi><mo>+</mo></msup><msup><mi>μ</mi><mo>−</mo></msup></mrow></semantics></math></inline-formula>. These findings provide tests of SM predictions while probing subtle hints of new physics. |
| format | Article |
| id | doaj-art-bdcfc71468584ffb8f81b50870afaa83 |
| institution | Kabale University |
| issn | 2571-712X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Particles |
| spelling | doaj-art-bdcfc71468584ffb8f81b50870afaa832025-08-20T03:43:40ZengMDPI AGParticles2571-712X2025-01-0181710.3390/particles8010007Rare Decays in CMSGiacomo Fedi0Department of Physics, Faculty of Natural Sciences, Imperial College London, Exhibition Road, London SW7 2AZ, UKThe CMS experiment at the LHC has advanced precision measurements of rare B-meson and charm decays, offering insights into phenomena beyond the Standard Model (SM). This paper highlights key results from Run 2 and Run 3 data, including the branching fraction and lifetime of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>B</mi><mi>s</mi></msub><mo>→</mo><msup><mi>μ</mi><mo>+</mo></msup><msup><mi>μ</mi><mo>−</mo></msup></mrow></semantics></math></inline-formula>, angular analyses of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mi>B</mi><mn>0</mn></msup><mo>→</mo><msup><mi>K</mi><mrow><mo>*</mo><mn>0</mn></mrow></msup><msup><mi>μ</mi><mo>+</mo></msup><msup><mi>μ</mi><mo>−</mo></msup></mrow></semantics></math></inline-formula>, the first observation of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>J</mi><mo>/</mo><mi>ψ</mi><mo>→</mo><msup><mi>μ</mi><mo>+</mo></msup><msup><mi>μ</mi><mo>−</mo></msup><msup><mi>μ</mi><mo>+</mo></msup><msup><mi>μ</mi><mo>−</mo></msup></mrow></semantics></math></inline-formula>, and stringent limits on <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mi>D</mi><mn>0</mn></msup><mo>→</mo><msup><mi>μ</mi><mo>+</mo></msup><msup><mi>μ</mi><mo>−</mo></msup></mrow></semantics></math></inline-formula>. These findings provide tests of SM predictions while probing subtle hints of new physics.https://www.mdpi.com/2571-712X/8/1/7particle physicsB physicsrare processes |
| spellingShingle | Giacomo Fedi Rare Decays in CMS Particles particle physics B physics rare processes |
| title | Rare Decays in CMS |
| title_full | Rare Decays in CMS |
| title_fullStr | Rare Decays in CMS |
| title_full_unstemmed | Rare Decays in CMS |
| title_short | Rare Decays in CMS |
| title_sort | rare decays in cms |
| topic | particle physics B physics rare processes |
| url | https://www.mdpi.com/2571-712X/8/1/7 |
| work_keys_str_mv | AT giacomofedi raredecaysincms |