Search for a Structure in the B0sπ± Invariant Mass Spectrum with the ATLAS Experiment

Allbrooke, B M M, Asquith, L, Cerri, A, Chavez Barajas, C A, De Santo, A, Salvatore, F, Santoyo Castillo, I, Suruliz, K, Sutton, M R, Vivarelli, I and ATLAS Collaboration, (2018) Search for a Structure in the B0sπ± Invariant Mass Spectrum with the ATLAS Experiment. Physical Review Letters, 120 (20). p. 202007. ISSN 0031-9007

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A search for the narrow structure, Xð5568Þ, reported by the D0 Collaboration in the decay sequence X → B0sπ±, B0s→J=ψϕ, 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 pp 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 B0s mesons, ρX, were determined at 95% confidence level. The results are N(X) < 382 and ρX < 0.015 for B0s mesons with transverse momenta above 10 GeV, and N(X) < 356 and ρX < 0.016 for transverse momenta above 15 GeV. Limits are also set for potential B0sπ± resonances in the mass range 5550 to 5700 MeV.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Experimental Particle Physics Research Group
Subjects: Q Science > QC Physics
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Depositing User: Billy Wichaidit
Date Deposited: 25 May 2018 08:06
Last Modified: 06 Jun 2018 13:36

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