PPC 2021: XIV International Workshop on Interconnections between Particle Physics and Cosmology

Session

Collider BSM

20 May 2021, 14:00

Conveners

Collider BSM

• Samuel Homiller (Harvard)

274. Signatures of toponium formation in LHC run 2 data

Ya-Juan Zheng

20/05/2021, 14:00

Measurements in top-antitop events at the LHC unraveled some anomalies. We examine the possibility that those reflect some mismodeling in Standard Model top pair-production. While subdominant, so-far neglected toponium contributions yield the additional production of dileptonic systems of small invariant mass and small azimuthal angle separation, which could explain the anomalies. We propose a...

149. Flavor anomalies from asymptotic safety

Dr Kamila Kowalska (National Centre for Nuclear Research)

20/05/2021, 14:15

Flavor

We use the framework of asymptotically safe quantum gravity to derive predictions
for scalar leptoquark solutions to the b → s flavor anomalies. The presence
of an interactive UV fixed point in the system of gauge and Yukawa couplings imposes a set of boundary conditions at the Planck scale, which allows one to determine low-energy values of the leptoquark Yukawa matrix elements. As a...

266. $R_{D^{(*)}}$, $R_{K^{(*)}}$ and muon $g-2$ anomalies in RPV supersymmetry and the discovery prospect at LHC

Fang Xu

20/05/2021, 14:30

BSM Physics

In R-parity violating supersymmetric scenario, assuming the third-generation superpartners to be the lightest (calling the scenario RPV3), we show that there are some benchmark scenarios in which RD and / or RK and / or muon g-2 anomalies can be addressed and also can be detected at LHC 14 TeV or future 27 TeV hadron collider. We consider t tau tau or t mu mu for different cases as our final...

279. Resonant Leptogenesis and Collider Signals from Discrete Flavor and CP Symmetries

Garv Chauhan (Washington University in St. Louis)

20/05/2021, 14:45

Neutrinos

In this talk, I’ll discuss about the production of baryon asymmetry through resonant leptogenesis and phenomological signatures of type-I seesaw scenario with a flavour and a CP symmetry that strongly constrain lepton mixing angles, and both low- and high-energy CP phases. I’ll specially focus on the effect of these symmetries on the collider signals in minimal $U(1)_{B-L}$ model and effective...

125. Exploring Multilepton Signatures From Dark Matter at the LHC

Arran Charles Freegard (Queen Mary University of London (GB))

20/05/2021, 15:00

Dark Matter

Limitations on the most general mono-X Dark Matter signature at colliders motivate searches beyond this, such as multilepton plus missing energy signatures. In this talk I present our latest limits on the inert 2-Higgs Doublet model (I2HDM) and Minimal Fermion Dark Matter model (MFDM) for 8/13 TeV pp collisions at the LHC, producing 2-3 leptons plus missing energy final states, using...

166. Search for lepton flavor violation at the EIC

Kaori Fuyuto (Los Alamos National Laboratory)

20/05/2021, 15:15

BSM Physics

The Electron-Ion Collider (EIC) will collide electrons with protons at high energy with unprecedented luminosity. The EIC is being optimized to map out the structure of the proton and nuclei. Its capability also presents another opportunity to search for physics beyond the Standard Model. In this talk, I will discuss the potential sensitivity of the EIC to charged-lepton-flavor violating...

110. Flavor changing top decays to charm and Higgs with $\tau \tau$ at the LHC

Rishabh Jain (University of Oklahoma)

Flavor

We investigate the prospects of discovering the top quark decay into
a charm quark and a Higgs boson ($t \to c h^0$) in top quark pair
production at the CERN Large Hadron Collider (LHC).
A general two Higgs doublet model is adopted to study flavor changing
neutral Higgs (FCNH) interactions.
We apply parton level analysis as well as Monte Carlo simulations
with PYTHIA8 and Delphes to...