Search for a Structure in the B_{s}^{0}^{} Invariant Mass Spectrum with the ATLAS Experiment.

A search for the narrow structure, X(5568), reported by the D0 Collaboration in the decay sequence XB_{s}^{0}^{}, B_{s}^{0}J/, is presented. The analysis is based on a data sample recorded with the ATLAS detector at the LHC corresponding to 4.9fb^{-1} of pp collisions at 7TeV and 19.5fb^{-1} at 8TeV. 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_{s}^{0} mesons, _{X}, were determined at 95%confidence level. The results are N(X)<382 and _{X}<0.015 for B_{s}^{0} mesons with transverse momenta above 10GeV, and N(X)<356 and _{X}<0.016 for transverse momenta above 15GeV. Limits are also set for potential B_{s}^{0}^{} resonances in the mass range 5550 to 5700MeV.

Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abidi, S. H., ... ATLAS Collaboration.

Aaboud, M||Aad, G||Abbott, B||Abdinov, O||Abeloos, B||Abidi, SH||AbouZeid, OS||Abraham, NL||Abramowicz, H||Abreu, H||Abulaiti, Y||Acharya, BS||Adachi, S||Adamczyk, L||Adelman, J||Adersberger, M||Adye, T||Affolder, AA||Afik, Y||Agheorghiesei, C||Aguilar-Saavedra, JA||Ahlen, SP||Ahmadov, F||Aielli, G||Akatsuka, S||Akerstedt, H||Åkesson, TPA||Akilli, E||Akimov, AV||Alberghi, GL||Albert, J||Albicocco, P||Alconada Verzini, MJ||Alderweireldt, S||Aleksa, M||Aleksandrov, IN||Alexa, C||Alexander, G||Alexopoulos, T||Alhroob, M||Ali, B||Aliev, M||Alimonti, G||Alison, J||Alkire, SP||Allbrooke, BMM||Allen, BW||Allport, PP||Aloisio, A||Alonso, A||Alonso, F||Alpigiani, C||Alshehri, AA||Alstaty, MI||Alvarez Gonzalez, B||Álvarez Piqueras, D||Alviggi, MG||Amadio, BT||Amaral Coutinho, Y||Amelung, C||Amidei, D||Amor Dos Santos, SP||Amoroso, S||Anastopoulos, C||Ancu, LS||Andari, N||Andeen, T||Anders, CF||Anders, JK||Anderson, KJ||Andreazza, A||Andrei, V||Angelidakis, S||Angelozzi, I||Angerami, A||Anisenkov, AV||Anjos, N||Annovi

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