Semileptonic transitions: B(s) → π(K); Ds → K; D → π,K; and K → π
Continuum Schwinger function methods for the strong-interaction bound-state problem are used to arrive at a unified set of parameter-free predictions for the semileptonic K→π, D→π,K and Ds→K, B(s)→π(K) transition form factors and the associated branching fractions. The form factors are a leading sou...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-01-01
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| Series: | Physics Letters B |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269321007334 |
| _version_ | 1818753654605217792 |
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| author | Zhao-Qian Yao Daniele Binosi Zhu-Fang Cui Craig D. Roberts |
| author_facet | Zhao-Qian Yao Daniele Binosi Zhu-Fang Cui Craig D. Roberts |
| author_sort | Zhao-Qian Yao |
| collection | DOAJ |
| description | Continuum Schwinger function methods for the strong-interaction bound-state problem are used to arrive at a unified set of parameter-free predictions for the semileptonic K→π, D→π,K and Ds→K, B(s)→π(K) transition form factors and the associated branching fractions. The form factors are a leading source of uncertainty in all such calculations: our results agree quantitatively with available data and provide benchmarks for the hitherto unmeasured Ds→K0, B¯s→K+ form factors. The analysis delivers a value of |Vcs|=0.974(10) and also predictions for all branching fraction ratios in the pseudoscalar meson sector that can be used to test lepton flavour universality. Quantitative comparisons are provided between extant theory and the recent measurement of BBs0→K−μ+νμ. Here, further, refined measurements would be useful in moving toward a more accurate value of |Vub|. |
| first_indexed | 2024-12-18T05:10:48Z |
| format | Article |
| id | doaj.art-db64de142a7f45a5ba2b35abd8ab815c |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-18T05:10:48Z |
| publishDate | 2022-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-db64de142a7f45a5ba2b35abd8ab815c2022-12-21T21:19:54ZengElsevierPhysics Letters B0370-26932022-01-01824136793Semileptonic transitions: B(s) → π(K); Ds → K; D → π,K; and K → πZhao-Qian Yao0Daniele Binosi1Zhu-Fang Cui2Craig D. Roberts3School of Physics, Nanjing University, Nanjing, Jiangsu 210093, China; Institute for Nonperturbative Physics, Nanjing University, Nanjing, Jiangsu 210093, ChinaEuropean Centre for Theoretical Studies in Nuclear Physics and Related Areas, Villa Tambosi, Strada delle Tabarelle 286, I-38123 Villazzano (TN), ItalySchool of Physics, Nanjing University, Nanjing, Jiangsu 210093, China; Institute for Nonperturbative Physics, Nanjing University, Nanjing, Jiangsu 210093, ChinaSchool of Physics, Nanjing University, Nanjing, Jiangsu 210093, China; Institute for Nonperturbative Physics, Nanjing University, Nanjing, Jiangsu 210093, China; Corresponding author at: School of Physics, Nanjing University, Nanjing, Jiangsu 210093, China.Continuum Schwinger function methods for the strong-interaction bound-state problem are used to arrive at a unified set of parameter-free predictions for the semileptonic K→π, D→π,K and Ds→K, B(s)→π(K) transition form factors and the associated branching fractions. The form factors are a leading source of uncertainty in all such calculations: our results agree quantitatively with available data and provide benchmarks for the hitherto unmeasured Ds→K0, B¯s→K+ form factors. The analysis delivers a value of |Vcs|=0.974(10) and also predictions for all branching fraction ratios in the pseudoscalar meson sector that can be used to test lepton flavour universality. Quantitative comparisons are provided between extant theory and the recent measurement of BBs0→K−μ+νμ. Here, further, refined measurements would be useful in moving toward a more accurate value of |Vub|.http://www.sciencedirect.com/science/article/pii/S0370269321007334Heavy-quark mesonsSemileptonic decaysCKM matrix elementsEmergence of hadron massNambu-Goldstone bosonsSchwinger function methods |
| spellingShingle | Zhao-Qian Yao Daniele Binosi Zhu-Fang Cui Craig D. Roberts Semileptonic transitions: B(s) → π(K); Ds → K; D → π,K; and K → π Physics Letters B Heavy-quark mesons Semileptonic decays CKM matrix elements Emergence of hadron mass Nambu-Goldstone bosons Schwinger function methods |
| title | Semileptonic transitions: B(s) → π(K); Ds → K; D → π,K; and K → π |
| title_full | Semileptonic transitions: B(s) → π(K); Ds → K; D → π,K; and K → π |
| title_fullStr | Semileptonic transitions: B(s) → π(K); Ds → K; D → π,K; and K → π |
| title_full_unstemmed | Semileptonic transitions: B(s) → π(K); Ds → K; D → π,K; and K → π |
| title_short | Semileptonic transitions: B(s) → π(K); Ds → K; D → π,K; and K → π |
| title_sort | semileptonic transitions b s π k ds k d π k and k π |
| topic | Heavy-quark mesons Semileptonic decays CKM matrix elements Emergence of hadron mass Nambu-Goldstone bosons Schwinger function methods |
| url | http://www.sciencedirect.com/science/article/pii/S0370269321007334 |
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