• Open Access

Study of the X±(5568) state with semileptonic decays of the Bs0 meson

V. M. Abazov et al. (D0 Collaboration)
Phys. Rev. D 97, 092004 – Published 18 May 2018

Abstract

We present a study of the X±(5568) using semileptonic decays of the Bs0 meson using the full run II integrated luminosity of 10.4fb1 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 Bs0μDs±X, Ds±ϕπ± which is consistent with the previous measurement by the D0 Collaboration in the hadronic decay mode, X±(5568)Bs0π± where Bs0J/ψϕ. The mass and width of this state are measured using a combined fit of the hadronic and semileptonic data, yielding m=5566.93.1+3.2(stat)1.2+0.6(syst)MeV/c2, Γ=18.66.1+7.9(stat)3.8+3.5(syst)MeV/c2 with a significance of 6.7σ.

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  • Received 29 December 2017

DOI:https://doi.org/10.1103/PhysRevD.97.092004

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

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Vol. 97, Iss. 9 — 1 May 2018

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