A search optimized for new heavy particles decaying to two b-quarks and produced in association with additional b-quarks is reported. The sensitivity is improved by b-tagging at least one lower-pT jet in addition to the two highest-pT jets. The data used in this search correspond to an integrated luminosity of 103 fb-1 collected with a dedicated trijet trigger during the 2017 and 2018 s=13 TeV proton-proton collision runs with the ATLAS detector at the LHC. The search looks for resonant peaks in the b-tagged dijet invariant mass spectrum over a smoothly falling background. The background is estimated with an innovative data-driven method based on orthonormal functions. The observed b-tagged dijet invariant mass spectrum is compatible with the background-only hypothesis. Upper limits at 95% confidence level on a heavy vector-boson production cross section times branching ratio to a pair of b-quarks are derived.
Search for heavy particles in the b -tagged dijet mass distribution with additional b -tagged jets in proton-proton collisions at s =13 TeV with the ATLAS experiment / G. Aad, B.A.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 105:1(2022 Jan 07), pp. 012001.012001-1-012001.012001-22. [10.1103/PhysRevD.105.012001]
Search for heavy particles in the b -tagged dijet mass distribution with additional b -tagged jets in proton-proton collisions at s =13 TeV with the ATLAS experiment
A. AndreazzaMembro del Collaboration Group
;E. BallabeneMembro del Collaboration Group
;A. CarboneMembro del Collaboration Group
;L. CarminatiMembro del Collaboration Group
;S. D'AuriaMembro del Collaboration Group
;L. Dell'AstaMembro del Collaboration Group
;M. Fanti;M. LazzaroniMembro del Collaboration Group
;C. MeroniMembro del Collaboration Group
;D.P. MungoMembro del Collaboration Group
;A. MurroneMembro del Collaboration Group
;L. PeriniMembro del Collaboration Group
;F. PiazzaMembro del Collaboration Group
;F. RagusaMembro del Collaboration Group
;A. StabileMembro del Collaboration Group
;
2022
Abstract
A search optimized for new heavy particles decaying to two b-quarks and produced in association with additional b-quarks is reported. The sensitivity is improved by b-tagging at least one lower-pT jet in addition to the two highest-pT jets. The data used in this search correspond to an integrated luminosity of 103 fb-1 collected with a dedicated trijet trigger during the 2017 and 2018 s=13 TeV proton-proton collision runs with the ATLAS detector at the LHC. The search looks for resonant peaks in the b-tagged dijet invariant mass spectrum over a smoothly falling background. The background is estimated with an innovative data-driven method based on orthonormal functions. The observed b-tagged dijet invariant mass spectrum is compatible with the background-only hypothesis. Upper limits at 95% confidence level on a heavy vector-boson production cross section times branching ratio to a pair of b-quarks are derived.| File | Dimensione | Formato | |
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