Dark Matter @ LHC 2019 (DM@LHC)

Session

From Models to Signatures

15 Aug 2019, 09:00

Walker-Ames (Kane Hall 225)

Conveners

From Models to Signatures

• Sonia El Hedri (LLR, Ecole Polytechnique)

57. State-of-the-art calculations of the dark matter abundance

Dr Julia Harz (ILP / LPTHE Paris)

15/08/2019, 09:00

15. [YSF] Constraints on $U(1)_{l_\mu-l_\tau}$ from LHC Data

Mr Zhongyi Zhang (Bonn University)

15/08/2019, 09:25

Young Scientist Forum

In this study, we apply LHC data to constrain the extension of the Standard Model by an anomaly-free $U(1)_{l_\mu-l_\tau}$ gauge group; this model contains a new gauge boson ($Z′$) and a scalar dark matter particle ($\phi_{DM}$). We recast a large number of LHC analyses from ATLAS and CMS of multi-lepton final states. We find that for 10 GeV < $m_{Z′}$ < 60 GeV the strongest constraint comes...

77. Collider signatures of minimal freeze-in models

dipan sengupta

15/08/2019, 09:40

Planery

We propose simple freeze-in models where the observed dark matter abundance is explained via the decay of an electrically charged and/or coloured parent particle into Feebly Interacting Massive Particles (FIMP). The parent particle is long-lived and yields a wide variety of LHC signatures depending on its lifetime and quantum numbers. We assess the current constraints and future high...

76. The warped dark sector

Dr sylvain fichet

15/08/2019, 10:05

Five-dimensional braneworld constructions in anti-de Sitter space naturally lead to dark sector
scenarios in which parts of the dark sector vanish at high 4d momentum or temperature. In the
language of modified gravity, such feature implies a new mechanism for hiding light scalars, as well
as the possibility of UV-completing chameleon-like effective theories. In the language of dark...