Measurement of cross sections for production of a Z boson in association with a flavor-inclusive or doubly b-tagged large-radius jet in proton-proton collisions at ffiffi ps = 13 TeV with the ATLAS experiment Atlas Collaboration Aguilar Saavedra, Juan Antonio Rodríguez Chala, Mikael We present measurements of cross sections for production of a leptonically decaying Z boson in association with a large-radius jet in 13 TeV proton-proton collisions at the LHC, using 36 fb−1 of data from the ATLAS detector. Integrated and differential cross sections are measured at particle level in both a flavor inclusive and a doubly b-tagged fiducial phase space. The large-radius jet mass and transverse momentum, its kinematic relationship to the Z boson, and the angular separation of b-tagged small-radius track jets within the large-radius jet are measured. This measurement constitutes an important test of perturbative quantum chromodynamics in kinematic and flavor configurations relevant to several Higgs boson and beyond-Standard-Model physics analyses. The results highlight issues with modeling of additional hadronic activity in the flavor-inclusive selection, and a distinction between flavor-number schemes in the b-tagged phase space 2023-11-03T08:55:17Z 2023-11-03T08:55:17Z 2023-07-31 journal article ATLAS Collaboration. (2022). Measurement of cross-sections for production of a $ Z $ boson in association with a flavor-inclusive or doubly $ b $-tagged large-radius jet in proton-proton collisions at $\sqrt {s}= 13~ $ TeV with the ATLAS experiment. arXiv preprint arXiv:2204.12355.[DOI: 10.1103/PhysRevD.108.012022] https://hdl.handle.net/10481/85436 10.1103/PhysRevD.108.012022 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional American Physical Society