Evidence for a B0sπ± state

Bertram, Iain Alexander and Borissov, Guennadi and Fox, Harald and Ratoff, Peter Neil and Ross, Anthony (2016) Evidence for a B0sπ± state. Physical review letters, 117 (2). ISSN 1079-7114

[img]
Preview
PDF (PhysRevLett.117.022003)
PhysRevLett.117.022003.pdf - Published Version
Available under License Unspecified.

Download (329kB)
[img]
Preview
PDF (1602.07588v3.pd)
1602.07588v3.pd.pdf - Accepted Version
Available under License Creative Commons Attribution.

Download (238kB)

Abstract

We report evidence for a narrow structure, X(5568), in the decay sequence X(5568)→B0sπ±, B0s→J/ψϕ, J/ψ→μ+μ−, ϕ→K+K−. This is evidence for the first instance of a hadronic state with valence quarks of four different flavors. The mass and natural width of this state are measured to be m=5567.8±2.9(stat)+0.9−1.9(syst)  MeV/c2 and Γ=21.9±6.4(stat)+5.0−2.5(syst)  MeV/c2. If the decay is X(5568)→B∗sπ±→B0sγπ± with an unseen γ, m(X(5568)) will be shifted up by m(B∗s)−m(B0s)∼49  MeV/c2. This measurement is based on 10.4  fb−1 of pp¯ collision data at s√=1.96  TeV collected by the D0 experiment at the Fermilab Tevatron collider.

Item Type: Journal Article
Journal or Publication Title: Physical review letters
Additional Information: © 2016 American Physical Society
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 80827
Deposited By: ep_importer_pure
Deposited On: 09 Aug 2016 09:14
Refereed?: Yes
Published?: Published
Last Modified: 14 Oct 2019 08:31
URI: https://eprints.lancs.ac.uk/id/eprint/80827

Actions (login required)

View Item View Item