Conveners
DM I
- Antonio Delgado (University of Notre Dame)
The presence of a non-baryonic dark matter component in the Universe is inferred from the observation of its gravitational interaction. If dark matter interacts weakly with the Standard Model it would be produced at the LHC, escaping the detector and leaving a large missing transverse momentum as their signature. The ATLAS detector has developed a broad programme to directly search for DM. The...
A large body of cosmological evidence points to the existence of dark matter in the Universe which cannot originate from standard model (SM) particles. Hence unraveling its origin remains one of the outstanding problems of particle physics and cosmology. The dark matter search program at the LHC covers a wide range of final states and targets a variety of possible interactions between dark...
We study discovery prospects for a real triplet extension of the Standard Model scalar sector at the LHC and a possible future 100 TeV $pp$ collider. We focus on the scenario in which the neutral triplet scalar is our dark matter candidate. When produced in $pp$ collisions, the charged triplet scalar decays to the neutral component plus a soft pion or soft lepton pair, yielding a disappearing...
Direct and indirect detection experiments have excluded large regions of parameter space for many of the simplest models of sub-TeV WIMP dark matter. However, the predictions of these models can be altered through the introduction of non-equilibrium events in their cosmological history. In this study we explore the implications of an energy-dominating, asymmetric, out-of-equilibrium decay on...
We propose an extension of the Standard Model gauge symmetry by the gauge group $𝑈(1)_{𝑇3𝑅}$ in order to address the Yukawa coupling hierarchy between the third generation and the first two generation fermions of the SM. Only the right-handed Standard Model fermions transform non-trivially under the $𝑈(1)_{𝑇3𝑅}$ group. In addition to the new dark gauge boson, we have a dark scalar particle...
At present the Standard Model (SM) of particle physics is the best theory to describe the fundamental particles and their interactions in nature. After the Higgs discovery, the particle spectrum of the SM is almost complete. However, the SM does not possess a candidate that can mimic the nature of dark matter (DM) inferred from astrophysical observations. Moreover, the SM does not explain the...
