Search for a Structure in the B0sπ± invariant mass spectrum with the ATLAS experiment

Barton, Adam Edward and Beattie, Michael and Bertram, Iain Alexander and Borissov, Guennadi and Bouhova-Thacker, Evelina Vassileva and Fox, Harald and Henderson, Robert Charles William and Jones, Roger William Lewis and Kartvelishvili, Vakhtang and Long, Robin Eamonn and Love, Peter Allan and Muenstermann, Daniel Matthias Alfred and Parker, Adam Jackson and Skinner, Malcolm and Smizanska, Maria and Walder, James William and Wharton, Andrew Mark and Whitmore, Ben (2018) Search for a Structure in the B0sπ± invariant mass spectrum with the ATLAS experiment. Physical review letters, 120 (20). ISSN 1079-7114

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A search for the narrow structure, X ( 5568 ) , reported by the D0 Collaboration in the decay sequence X → B 0 s π ± , B 0 s → J / ψ ϕ , is presented. The analysis is based on a data sample recorded with the ATLAS detector at the LHC corresponding to 4.9 fb − 1 of p p collisions at 7 TeV and 19.5 fb − 1 at 8 TeV. No significant signal was found. Upper limits on the number of signal events, with properties corresponding to those reported by D0, and on the X production rate relative to B 0 s mesons, ρ X , were determined at 95% confidence level. The results are N ( X ) < 382 and ρ X < 0.015 for B 0 s mesons with transverse momenta above 10 GeV, and N ( X ) < 356 and ρ X < 0.016 for transverse momenta above 15 GeV. Limits are also set for potential B 0 s π ± resonances in the mass range 5550 to 5700 MeV.

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Journal Article
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Physical review letters
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24 Oct 2018 09:10
Last Modified:
16 Sep 2020 04:58