Phenomenology 2023 Symposium

Session

BSM I

8 May 2023, 14:15

Lawrence Hall 105

Conveners

BSM I

• Ben Carlson (Westmont College)

22. Searching for new symmetries in the Higgs sector at ATLAS

Paul Thompson (University of Birmingham (GB))

08/05/2023, 14:15

BSM

The discovery of the Higgs boson with the mass of 125 GeV confirmed the mass generation mechanism via spontaneous electroweak symmetry breaking and completed the particle content predicted by the Standard Model. Even though this model is well established and consistent with many experimental measurements, it is not capable of solely explaining some observations. Many extensions of the Standard...

118. Dark Photons from Charged Pion Bremsstrahlung at Proton Beam Experiments

Rachel Nguyen (University of Illinois at Urbana-Champaign)

08/05/2023, 14:30

BSM

Secondary charged particles in proton beam dump experiments offer a new production mechanism for new particles like dark photons. Proton beam dump experiments produce a multitude of secondary charged pions. As the charged pions travel down the beam path, they scatter off of the target’s nuclei and can radiate a dark photon. We use chiral perturbation theory to calculate the production of dark...

16. Searches for Dark Matter with the ATLAS Experiment at the LHC

Jia Jian Teoh (ATLAS), Jia Jian Teoh (University of Toronto (CA))

08/05/2023, 14:45

BSM

The presence of a non-baryonic Dark Matter (DM) component in the Universe is inferred from the observation of its gravitational interaction. If Dark Matter interacts weakly with the Standard Model (SM) it could be produced at the LHC. The ATLAS Collaboration has developed a broad search program for DM candidates in final states with large missing transverse momentum produced in association...

18. Searches for new physics with leptons using the ATLAS detector

Roy Brener (Weizmann Institute of Science (IL))

08/05/2023, 15:00

BSM

Many theories beyond the Standard Model (SM) predict that New Physics (NP) will manifest by decaying into final states involving leptons. Leptoquarks are predicted by different NP theories to describe similarities between the lepton and quark sectors of the SM. Other NP theories relating to quantum gravity predict periodic signatures in dilepton final states, where tightly-spaced resonance...

14. Searches for supersymmetric particles with prompt decays with the ATLAS detector

Flera Rizatdinova (ATLAS)

08/05/2023, 15:15

BSM

Supersymmetry (SUSY) provides elegant solutions to several problems in the Standard Model, and searches for SUSY particles are an important component of the LHC physics program. This talk will present the latest results from SUSY searches conducted by the ATLAS experiment. The searches target multiple final states and different assumptions about the decay mode of the produced SUSY particles,...

15. Searches for BSM resonances in ATLAS

Blaz Leban (ATLAS)

08/05/2023, 15:30

BSM

Many new physics models predict the existence of additional particles. This talk summarizes recent ATLAS searches for Beyond-the-Standard-Model heavy resonances which decay to pairs of bosons, heavy quarks, or leptons, using Run 2 data collected at the LHC. The experimental methods are explained, including the jet substructure techniques used in some searches to disentangle the hadronic decay...

176. Secluded dark matter in gauged $B-L$ model

Ms ROJALIN PADHAN (Institute of Physics, Bhubaneswar)

08/05/2023, 15:45

Dark Matter

We consider the gauged $B-L$ model which is extended with a secluded dark sector, comprising of two dark sector particles. In this framework the lightest $Z_2$-odd particle is the dark matter candidate, having a feeble interaction with all other SM and BSM states. The next-to-lightest $Z_2$-odd particle in the dark sector is a super-wimp, with large interaction strength with the SM and BSM...