Study of the X± (5568) state with semileptonic decays of the Bs0 meson STUDY of the X± (5568) STATE with ⋯ V. M. ABAZOV et al.
Nenhuma Miniatura disponível
Data
2018-05-01
Autores
Abazov, V. M.
Abbott, B.
Acharya, B. S.
Adams, M.
Adams, T.
Agnew, J. P.
Alexeev, G. D.
Alkhazov, G.
Alton, A.
Askew, A.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
We present a study of the X±(5568) using semileptonic decays of the Bs0 meson using the full run II integrated luminosity of 10.4 fb-1 in proton-antiproton collisions at a center of mass energy of 1.96 TeV collected with the D0 detector at the Fermilab Tevatron Collider. We report evidence for a narrow structure, X±(5568), in the decay sequence X±(5568)→Bs0π± where Bs0→μ Ds±X, Ds±→φπ± which is consistent with the previous measurement by the D0 Collaboration in the hadronic decay mode, X±(5568)→Bs0π± where Bs0→J/ψφ. The mass and width of this state are measured using a combined fit of the hadronic and semileptonic data, yielding m=5566.9-3.1+3.2(stat)-1.2+0.6(syst) MeV/c2, Γ=18.6-6.1+7.9(stat)-3.8+3.5(syst) MeV/c2 with a significance of 6.7σ.
Descrição
Palavras-chave
Como citar
Physical Review D, v. 97, n. 9, 2018.