## "Observation of $D^0$ meson decays to $pi^+\pi^-\mu^+\mu^-$ and $K^+K^-\mu^+\mu^-$ final states"статья

Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus
• Авторы:
• Журнал: Physical Review Letters
• Том: 119
• Номер: 18
• Год издания: 2017
• Издательство: American Physical Society
• Местоположение издательства: United States
• DOI: 10.1103/physrevlett.119.181805
• Аннотация: The first observation of the D0→π+π-μ+μ- and D0→K+K-μ+μ- decays is reported using a sample of proton-proton collisions collected by LHCb at a center-of-mass energy of 8 TeV, and corresponding to 2  fb-1 of integrated luminosity. The corresponding branching fractions are measured using as normalization the decay D0→K-π+[μ+μ-]ρ0/ω, where the two muons are consistent with coming from the decay of a ρ0 or ω meson. The results are B(D0→π+π-μ+μ-)=(9.64±0.48±0.51±0.97)×10-7 and B(D0→K+K-μ+μ-)=(1.54±0.27±0.09±0.16)×10-7, where the uncertainties are statistical, systematic, and due to the limited knowledge of the normalization branching fraction. The dependence of the branching fraction on the dimuon mass is also investigated.
• Добавил в систему: Бережной Александр Викторович

### Работа с статьей

 [1] "observation of d0 meson decays to pi+π-μ+μ- and k+k-μ+μ- final states" / А. В. Бережной, И. В. Горелов, А. К. Лефлат et al. // Physical Review Letters. — 2017. — Vol. 119, no. 18. The first observation of the D0→π+π-μ+μ- and D0→K+K-μ+μ- decays is reported using a sample of proton-proton collisions collected by LHCb at a center-of-mass energy of 8 TeV, and corresponding to 2  fb-1 of integrated luminosity. The corresponding branching fractions are measured using as normalization the decay D0→K-π+[μ+μ-]ρ0/ω, where the two muons are consistent with coming from the decay of a ρ0 or ω meson. The results are B(D0→π+π-μ+μ-)=(9.64±0.48±0.51±0.97)×10-7 and B(D0→K+K-μ+μ-)=(1.54±0.27±0.09±0.16)×10-7, where the uncertainties are statistical, systematic, and due to the limited knowledge of the normalization branching fraction. The dependence of the branching fraction on the dimuon mass is also investigated. [ DOI ]