A search is performed for dark matter particles produced in association with a resonantly produced pair of -quarks with using of proton-proton collisions at a center-of-mass energy of 13 TeV recorded by the ATLAS detector at the LHC. This signature is expected in extensions of the standard model predicting the production of dark matter particles, in particular those containing a dark Higgs boson that decays into . The highly boosted topology is reconstructed using jet reclustering and a new identification algorithm. This search places stringent constraints across regions of the dark Higgs model parameter space that satisfy the observed relic density, excluding dark Higgs bosons with masses between 30 and 150 GeV in benchmark scenarios with mediator masses up to 4.8 TeV at 95% confidence level.
Aad, G., et al. "Search for Dark Matter Produced in Association with a Dark Higgs Boson in the <math display='inline'> <mrow> <mi>b</mi> <mover accent='true'> <mrow> <mi>b</mi> </mrow> <mrow> <mo stretchy='false'>¯</mo> </mrow> </mover> </mrow> </math> Final State Using <math display='inline'> <mi>p</mi> <mi>p</mi> </math> Collisions at <math display='inline'> <mrow> <msqrt> <mrow> <mi>s</mi> </mrow> </msqrt> <mo>=</mo> <mn>13</mn> <mtext> </mtext> <mtext> </mtext> <mi>TeV</mi> </mrow> </math> with the ATLAS Detector." Physical Review Letters, vol. 134, no. 12, Mar. 2025. https://doi.org/10.1103/PhysRevLett.134.121801
Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., Abicht, N. J., Abidi, S. H., Aboelela, M., Aboulhorma, A., Abramowicz, H., Abreu, H., Abulaiti, Y., Acharya, B. S., Ackermann, A., Adam Bourdarios, C., Adamczyk, L., Addepalli, S. V., Addison, M. J., ... Zwalinski, L. (2025). Search for Dark Matter Produced in Association with a Dark Higgs Boson in the <math display='inline'> <mrow> <mi>b</mi> <mover accent='true'> <mrow> <mi>b</mi> </mrow> <mrow> <mo stretchy='false'>¯</mo> </mrow> </mover> </mrow> </math> Final State Using <math display='inline'> <mi>p</mi> <mi>p</mi> </math> Collisions at <math display='inline'> <mrow> <msqrt> <mrow> <mi>s</mi> </mrow> </msqrt> <mo>=</mo> <mn>13</mn> <mtext> </mtext> <mtext> </mtext> <mi>TeV</mi> </mrow> </math> with the ATLAS Detector. Physical Review Letters, 134(12). https://doi.org/10.1103/PhysRevLett.134.121801
Aad, G., Aakvaag, E., Abbott, B., et al., "Search for Dark Matter Produced in Association with a Dark Higgs Boson in the <math display='inline'> <mrow> <mi>b</mi> <mover accent='true'> <mrow> <mi>b</mi> </mrow> <mrow> <mo stretchy='false'>¯</mo> </mrow> </mover> </mrow> </math> Final State Using <math display='inline'> <mi>p</mi> <mi>p</mi> </math> Collisions at <math display='inline'> <mrow> <msqrt> <mrow> <mi>s</mi> </mrow> </msqrt> <mo>=</mo> <mn>13</mn> <mtext> </mtext> <mtext> </mtext> <mi>TeV</mi> </mrow> </math> with the ATLAS Detector," Physical Review Letters 134, no. 12 (2025), https://doi.org/10.1103/PhysRevLett.134.121801
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 462, Issue 1-2https://doi.org/10.1016/S0168-9002(01)00089-4
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 506, Issue 3https://doi.org/10.1016/S0168-9002(03)01368-8
Proceedings of 13th International Workshop on Advanced Computing and Analysis Techniques in Physics Research — PoS(ACAT2010)https://doi.org/10.22323/1.093.0057