A search for new resonances decaying into jets containing $b$-hadrons in $pp$ collisions with the ATLAS detector at the LHC is presented in the dijet mass range from 0.57 to 7 TeV. The data set corresponds to an integrated luminosity of up to $36.1{\mathrm{fb}}^{-1}$ collected in 2015 and 2016 at $\sqrt{s}=13\mathrm{TeV}$. No evidence of a significant excess of events above the smooth background shape is found. Upper cross-section limits and lower limits on the corresponding signal mass parameters for several types of signal hypotheses are provided at 95% C.L. In addition, 95% C.L. upper limits are set on the cross sections for new processes that would produce Gaussian-shaped signals in the di-$b$-jet mass distributions.

• Received 24 May 2018

DOI:https://doi.org/10.1103/PhysRevD.98.032016

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© 2018 CERN, for the ATLAS Collaboration