Charge asymmetry in decays B → D D ¯ K $$ D\overline{D}K $$
Abstract We discusses the charge asymmetry in B → D D ¯ K $$ D\overline{D}K $$ decays with an invariant mass of the D D ¯ $$ D\overline{D} $$ pair near the Ψ(3770) resonance. Unlike Ψ(3770) decays in e + e − annihilation, in B + decays the probability of D 0 D ¯ 0 $$ {D}^0{\overline{D}}^0 $$ product...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-12-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP12(2020)015 |
| _version_ | 1827793612809699328 |
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| author | A. E. Bondar A. I. Milstein |
| author_facet | A. E. Bondar A. I. Milstein |
| author_sort | A. E. Bondar |
| collection | DOAJ |
| description | Abstract We discusses the charge asymmetry in B → D D ¯ K $$ D\overline{D}K $$ decays with an invariant mass of the D D ¯ $$ D\overline{D} $$ pair near the Ψ(3770) resonance. Unlike Ψ(3770) decays in e + e − annihilation, in B + decays the probability of D 0 D ¯ 0 $$ {D}^0{\overline{D}}^0 $$ production is almost three times higher than D + D − . In B 0 decays, the ratio of these probabilities will be opposite. The effect is explained by the fact that, in B-meson decays, the D D ¯ $$ D\overline{D} $$ pair is produced in a superposition of isoscalar and isovector states, and only in combination with K-mesons the total state has 1/2 isospin. We present a simple model in which the interference of the nonresonant isovector amplitude with the resonant isoscalar amplitude explains the experimental data. |
| first_indexed | 2024-03-11T18:20:59Z |
| format | Article |
| id | doaj.art-47b114af7f0746e6a1ed41f8b5e4293a |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-03-11T18:20:59Z |
| publishDate | 2020-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-47b114af7f0746e6a1ed41f8b5e4293a2023-10-15T11:04:42ZengSpringerOpenJournal of High Energy Physics1029-84792020-12-0120201211010.1007/JHEP12(2020)015Charge asymmetry in decays B → D D ¯ K $$ D\overline{D}K $$A. E. Bondar0A. I. Milstein1Budker Institute of Nuclear Physics of SB RASBudker Institute of Nuclear Physics of SB RASAbstract We discusses the charge asymmetry in B → D D ¯ K $$ D\overline{D}K $$ decays with an invariant mass of the D D ¯ $$ D\overline{D} $$ pair near the Ψ(3770) resonance. Unlike Ψ(3770) decays in e + e − annihilation, in B + decays the probability of D 0 D ¯ 0 $$ {D}^0{\overline{D}}^0 $$ production is almost three times higher than D + D − . In B 0 decays, the ratio of these probabilities will be opposite. The effect is explained by the fact that, in B-meson decays, the D D ¯ $$ D\overline{D} $$ pair is produced in a superposition of isoscalar and isovector states, and only in combination with K-mesons the total state has 1/2 isospin. We present a simple model in which the interference of the nonresonant isovector amplitude with the resonant isoscalar amplitude explains the experimental data.https://doi.org/10.1007/JHEP12(2020)015B physicse+-e- ExperimentsQuarkonium |
| spellingShingle | A. E. Bondar A. I. Milstein Charge asymmetry in decays B → D D ¯ K $$ D\overline{D}K $$ Journal of High Energy Physics B physics e+-e- Experiments Quarkonium |
| title | Charge asymmetry in decays B → D D ¯ K $$ D\overline{D}K $$ |
| title_full | Charge asymmetry in decays B → D D ¯ K $$ D\overline{D}K $$ |
| title_fullStr | Charge asymmetry in decays B → D D ¯ K $$ D\overline{D}K $$ |
| title_full_unstemmed | Charge asymmetry in decays B → D D ¯ K $$ D\overline{D}K $$ |
| title_short | Charge asymmetry in decays B → D D ¯ K $$ D\overline{D}K $$ |
| title_sort | charge asymmetry in decays b d d ¯ k d overline d k |
| topic | B physics e+-e- Experiments Quarkonium |
| url | https://doi.org/10.1007/JHEP12(2020)015 |
| work_keys_str_mv | AT aebondar chargeasymmetryindecaysbddkdoverlinedk AT aimilstein chargeasymmetryindecaysbddkdoverlinedk |