A search for the narrow structure, Xð5568Þ, reported by the D0 Collaboration in the decay sequence X → B0s π, 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 NðXÞ < 382 and ρX < 0.015 for B0s mesons with transverse momenta above 10 GeV, and NðXÞ < 356 and ρX < 0.016 for transverse momenta above 15 GeV. Limits are also set for potential B0s π resonances in the mass range 5550 to 5700 MeV.

Aaboud M., A.G. (2018). Search for a Structure in the Bs0π± Invariant Mass Spectrum with the ATLAS Experiment. PHYSICAL REVIEW LETTERS, 120(20), 202007-1-202007-19 [10.1103/PhysRevLett.120.202007].

Search for a Structure in the Bs0π± Invariant Mass Spectrum with the ATLAS Experiment

Alberghi G. L.;Bellagamba L.;Bindi M.;Boscherini D.;Caforio D.;De Castro S.;Di Sipio R.;Fabbri L.;Franchini M.;Gabrielli A.;Giacobbe B.;Lasagni Manghi F.;Macchiolo A.;Massa L.;Mengarelli A.;Monzani S.;Polini A.;Rinaldi L.;Romano M.;Sbarra C.;Sbrizzi A.;Semprini-Cesari N.;Sioli M.;Todome K.;Ucchielli G.;Valentinetti S.;Villa M.;Vittori C.;Zoccoli A.;
2018

Abstract

A search for the narrow structure, Xð5568Þ, reported by the D0 Collaboration in the decay sequence X → B0s π, 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 NðXÞ < 382 and ρX < 0.015 for B0s mesons with transverse momenta above 10 GeV, and NðXÞ < 356 and ρX < 0.016 for transverse momenta above 15 GeV. Limits are also set for potential B0s π resonances in the mass range 5550 to 5700 MeV.
2018
Aaboud M., A.G. (2018). Search for a Structure in the Bs0π± Invariant Mass Spectrum with the ATLAS Experiment. PHYSICAL REVIEW LETTERS, 120(20), 202007-1-202007-19 [10.1103/PhysRevLett.120.202007].
Aaboud M., Aad G., Abbott B., Abdinov O., Abeloos B., Abidi S.H., Abouzeid O.S., Abraham N.L., Abramowicz H., Abreu H., Abulaiti Y., Acharya B.S., Ada...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/650170
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