Angular moments of the decay Λ0b→Λμ+μ− at low hadronic recoil

Авторы: Бережной А.В., Горелов И.В., Лефлат А.К., Никитин Н.В., Саврина Д.В., Волков В.Ю., Жуков В.Ю., LHCb Collaboration
Журнал: Journal of High Energy Physics
Том: 2018
Номер: 9
Год издания: 2018
Издательство: IOP Publishing
Местоположение издательства: [Bristol, UK], England
DOI: 10.1007/jhep09(2018)146
Аннотация: An analysis of the angular distribution of the decay Λ0b→Λμ+μ− is presented, using data collected with the LHCb detector between 2011 and 2016 and corresponding to an integrated luminosity of approximately 5fb−1. Angular observables are determined using a moment analysis of the angular distribution at low hadronic recoil, corresponding to the dimuon invariant mass squared range 15<q2<20GeV2/c4. The full basis of observables is measured for the first time. The lepton-side, hadron-side and combined forward-backward asymmetries of the decay are determined to be AlFBAhFBAlhFB=−0.39±0.04stat±0.01syst,=−0.30±0.05stat±0.02syst,=+0.25±0.04stat±0.01syst. The measurements are consistent with Standard Model predictions.
Добавил в систему: Бережной Александр Викторович

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