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.
Original language | English |
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Article number | 012001 |
Number of pages | 22 |
Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Volume | 105 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Jan 2022 |
Bibliographical note
32 pages in total, author list starting page 17, 4 figures, 1 table, submitted to Phys. Rev. D. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2018-09/Keywords
- hep-ex