@misc{10481/56081, year = {2018}, url = {http://hdl.handle.net/10481/56081}, abstract = {A search for the narrow structure, X(5568), reported by the D0 Collaboration in the decay sequence X→Bs0π±, Bs0→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 Bs0 mesons, ρX, were determined at 95% confidence level. The results are N(X)<382 and ρX<0.015 for Bs0 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 Bs0π± resonances in the mass range 5550 to 5700 MeV.}, organization = {Funded by SCOAP3.}, publisher = {American Physical Society}, keywords = {Colliding beams}, keywords = {ATLAS}, keywords = {CERN LHC Coll}, keywords = {Mass spectrum: (B/s0 pi+)}, title = {Search for a Structure in the B0sπ± Invariant Mass Spectrum with the ATLAS Experiment}, author = {Aguilar Saavedra, Juan Antonio and Atlas Collaboration}, }