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Dark Matter @ LHC 2020 (DM@LHC)

2–5 Jun 2020
Europe/Zurich timezone

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Contribution List

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  1. 10. Welcome and Introduction
    Janna Katharina Behr (Deutsches Elektronen-Synchrotron (DE))
    02/06/2020, 14:00
    Talk
    Tuesday
  2. 11. Dark Matter Working Group report (15'+5')
    Oleg Brandt (University of Cambridge (GB))
    02/06/2020, 14:20
    Talk
    Tuesday
  3. 12. Simplified models: s-channel (15'+5')
    Chad Wells Freer (Northeastern University (US))
    02/06/2020, 14:40
    Talk
    Tuesday
  4. 13. A universal framework for t-channel dark matter models (15'+5')
    Chiara Arina (CP3 UCLouvain)
    02/06/2020, 15:00
    Talk
    Tuesday
  5. 44. Interference effects in dilepton resonance searches for Z' bosons and dark matter mediators (8'+2')
    Stefan Schulte (Max Planck Institute for Physics (Munich))
    02/06/2020, 15:20
    Talk
    Tuesday

    New $Z^{\prime}$ gauge bosons arise in many extensions of the Standard Model and predict resonances in the dilepton invariant mass spectrum. We present ZPEED ($Z^{\prime}$ Exclusions from Experimental Data), an open-source code providing fast likelihoods and exclusion bounds for general $Z^{\prime}$ models based on the most recently published 139 fb$^{-1}$ ATLAS dilepton data. PDF and detector...

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  6. 14. Invisible Higgs decays (15'+5')
    Vukasin Milosevic (Imperial College (GB))
    02/06/2020, 16:00
    Talk
    Tuesday
  7. 6. The Inert Doublet Model at current and future colliders (15' + 5')
    Tania Natalie Robens (Rudjer Boskovic Institute (HR))
    02/06/2020, 16:20
    Talk
    Tuesday

    I will discuss the Inert Doublet Model, a Two Higgs Doublet Model with an exact Z_2 symmetry that provides a dark matter candidate. I will elaborate on current constraints on the parameter space as well as discovery prospects at current and future colliders.

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  8. 16. A less simplified model: 2HDM+pseudoscalar (15'+5')
    Kristian Bjoerke (University of Oslo (NO))
    02/06/2020, 16:40
    Talk
    Tuesday
  9. 17. Theory overview (25'+5')
    Hitoshi Murayama (University of California Berkeley (US))
    02/06/2020, 17:00
  10. 18. LHCb dark sector searches (15'+5')
    Martino Borsato (Ruprecht Karls Universitaet Heidelberg (DE))
    03/06/2020, 14:00
    Talk
    Wednesday
  11. 19. DM-flavour connection (15'+5')
    Giorgio Arcadi
    03/06/2020, 14:20
  12. 20. Lepton Flavour Universality: LHCb results and prospects (15'+5')
    Guy Henri Maurice Wormser (Université Paris-Saclay (FR))
    03/06/2020, 14:40
  13. 21. Strongly interacting dark sectors (15'+5')
    Dr Giovanni Grilli di Cortona (University of Sao Paulo)
    03/06/2020, 15:00
  14. 7. Baryogenesis and Dark Matter from B Mesons (8'+2')
    Miguel Escudero (King's College London)
    03/06/2020, 15:20
    Talk
    Wednesday

    In this talk, based on arXiv:1810.00880 and ongoing work, I will present a new mechanism of Baryogenesis and Dark Matter production in which both the dark matter relic abundance and the baryon asymmetry arise from neutral B meson oscillations and subsequent decays in the early Universe.

    This mechanism would have distinctive experimental signals that I will discuss in detail:

    i) the new...

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  15. 22. Axion-like particles (15'+5')
    Martin Bauer (Heidelberg University)
    03/06/2020, 16:00
    Talk
    Wednesday
  16. 23. Dark photons and axion-like particles at the LHC (15'+5')
    Rafael Coelho Lopes De Sa (University of Massachusetts (US))
    03/06/2020, 16:20
    Talk
    Wednesday
  17. 24. Long-lived Particle Experiments at the LHC: FASER, MATHUSLA, and others (15'+5')
    Samuel Ross Meehan (CERN)
    03/06/2020, 16:40
  18. 45. Search for millicharged particles in proton-proton collisions at √s=13 TeV with the milliQan Demonstrator (8' + 2')
    Ryan Schmitz (UCSB)
    03/06/2020, 17:00
    Talk
    Wednesday

    In this talk, we will present the results of a recent search for fractionally charged particles using a data sample of proton-proton collisions provided by the CERN Large Hadron Collider in 2018. This search was carried out with a prototype scintillator-based detector, which allows the first sensitivity to particles with charges ≤0.1e at a hadron collider. The existence of new particles with...

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  19. 25. Intensity frontier (15'+5')
    Felix Kling (SLAC)
    03/06/2020, 17:10
  20. 26. Dark Matter Capture in Neutron Stars (15'+5')
    Nicole Bell (University of Melbourne)
    04/06/2020, 14:00
    Talk
    Thursday
  21. 29. Gravitational waves and dark matter (15'+5')
    Toby Opferkuch (CERN)
    04/06/2020, 14:20
  22. 43. Robust cosmological constraints on axion-like particles (8'+2')
    Paul Frederik Depta (Deutsches Elektronen-Synchrotron (DESY))
    04/06/2020, 14:40
    Talk
    Thursday

    Axion-like particles with masses in the keV-GeV range have a profound impact on the cosmological evolution of our Universe, in particular on the abundance of light elements produced during Big Bang Nucleosynthesis. The resulting limits are complementary to searches in the laboratory and provide valuable additional information regarding the validity of a given point in parameter space. A...

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  23. 27. SUSY dark matter searches (15'+5')
    Sicheng Wang (Univ. of California Santa Barbara (US))
    04/06/2020, 14:50
    Talk
    Thursday
  24. 28. Global fits of supersymmetry - can we still have light neutralino DM? (15'+5')
    Are Raklev (University of Oslo (NO))
    04/06/2020, 15:10
    Talk
    Thursday
  25. 46. Conference picture!
    04/06/2020, 15:30
  26. 30. Performance improvements at ATLAS (15'+5')
    Jeanette Miriam Lorenz (Ludwig Maximilians Universitat (DE))
    04/06/2020, 16:00
  27. 31. Object performance improvements at CMS (15'+5')
    Laurent Thomas (Universite Libre de Bruxelles (BE)), Laurent Thomas (Universite Libre de Bruxelles (BE))
    04/06/2020, 16:20
  28. 32. ML approaches in phenomenology (15'+5')
    Sascha Caron (Nikhef National institute for subatomic physics (NL))
    04/06/2020, 16:40
  29. 33. ML for Jet Tagging and Event Classification on ATLAS and CMS (15'+5')
    Michael Aaron Kagan (SLAC National Accelerator Laboratory (US))
    04/06/2020, 17:00
  30. 5. A novel density estimator and its use for LHC signal detection (8'+2')
    Alessandro Morandini (SISSA)
    04/06/2020, 17:20
    Talk
    Thursday

    We introduce a new density estimator based on Markov Chains. This estimator presents several benefits with respect to the usual ones and can be used straightforwardly in all density-based approaches to data science. After showing its consistency, we will present some promising results when applied to general scope datasets. Finally, we perform a preliminary analysis of a subset of the latest...

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  31. 34. Dark matter and long-lived particles at the LHC (15'+5')
    Andreas Goudelis (LPTHE - Paris)
    05/06/2020, 14:00
  32. 35. Long-lived particle searches in ATLAS and CMS (15'+5')
    Masahiro Morinaga (Waseda University (JP))
    05/06/2020, 14:20
  33. 41. Exploring jet substructure in semi-visible jets (8'+2')
    Sukanya Sinha (University of Witwatersrand)
    05/06/2020, 14:40
    Talk
    Friday

    Semi-visible jets arise in strongly interacting dark sectors, where parton evolution includes dark sector emissions, resulting in jets overlapping with missing transverse momentum. The implementation of semi-visible jets is done using the Pythia Hidden valley module to duplicate the dark sector showering. In this work, several jet substructure observables have been examined to compare...

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  34. 4. Casting a GraphNet to catch dark showers (8'+2')
    Elias Bernreuther (RWTH Aachen University)
    05/06/2020, 14:50
    Talk
    Friday

    Strongly interacting dark sectors predict dark showers, which give rise to novel LHC signatures such as semi-visible jets. However, these are difficult to search for with conventional analysis techniques. In my talk I will first consider the sensitivity of existing and prospective LHC searches to semi-visible jets and then discuss how deep learning can help to distinguish dark showers from...

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  35. 40. Dark photons from hadronic showers (8'+2')
    Luc Jean Marie Darmé (INFN - National Institute for Nuclear Physics)
    05/06/2020, 15:00
    Talk
    Friday

    Neutral mesons decay is often considered the dominant production mechanism for light dark photons in proton-proton and proton-nucleus collision. However, the produced hadronic showers also transfer a relevant amount of their energies into electromagnetic subshowers. We show that in certain cases, the positrons created in these sub-showers can lead to dark photon production rates significantly...

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  36. 8. Probing the real triplet scalar dark matter at colliders (8'+2')
    Yong Du (University of Massachusetts-Amherst)
    05/06/2020, 15:10
    Talk
    Friday

    We study discovery prospects of the real triplet model at the LHC and a future 100TeV $pp$ collider. The model provides a dark matter candidate and its smoking-gun signature is the so-called "disappearing charged tracks". We recast current 13TeV LHC searches for disappearing tracks and find that the LHC presently excludes a real triplet scalar lighter than 287GeV with...

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  37. 47. Closing remarks
    Felix Kahlhoefer (RWTH Aachen)
    05/06/2020, 16:00
    Talk
    Friday
  38. 37. DM and feebly-interacting particles: ideas for cross-experimental collaborations (15'+5')
    Gaia Lanfranchi (INFN e Laboratori Nazionali di Frascati (IT))
    05/06/2020, 16:05
    Talk
    Friday
  39. 38. Reinterpretation tools for dark matter searches (20'+5')
    Prof. Jonathan Butterworth (UCL)
    05/06/2020, 16:25
    Talk
    Friday
  40. 39. Panel discussion
    Caterina Doglioni (Lund University (SE)), Suchita Kulkarni (Austrian Academy of Sciences (AT))
    05/06/2020, 16:50
    Talk
    Friday
  41. 1. Group picture
  42. 15. Higgs and top tales of dark matter (15'+5')
    Susanne Westhoff (Heidelberg University)
  43. 36. Lightning talks