Description
Posters will remain visible for the whole duration of the workshop
The LHCb experiment is designed to perform high precision measurements of matter-antimatter asymmetries and searches for rare and forbidden decays, with the aim of discovering new and unexpected particles and forces. In 2030 the LHC beam intensity will increase by a factor of 50 compared to current operations. This means increased samples of the particles we need to study, but it also presents...
Real data as well as Monte Carlo simulations are used to study the decay of $B^0_s \to J/\psi\phi$ in order to measure the $CP$ violating mixing phase and the width difference between the $B^0_s$ eigenstates. The increased sensitivity is expected mainly due to the improved decay time resolution obtained with the ATLAS upgraded IBL and ITk inner tracking detector
The upgraded CMS detector at the HL-LHC will allow the properties of the Higgs boson to be measured with unprecedented precision. This poster presents the expected performance of Higgs measurements in the diphoton decay channel using the upgraded CMS detector. Current CMS analyses and near-term plans are summarised. Recent studies of the projected diphoton mass resolution at the HL-LHC, taking...
The HH->bbγγ is a promising channel to measure the trilinear Higgs self-coupling, benefitting from the narrow mass peak of the H->γγ decay and the large branching fraction of the H->bb decay. The prospects for observing di-Higgs production through the bbγγ channel in the HL-LHC are presented. This study assumes an integrated luminosity of 3000 fb-1 and mean pileup rates < μ > of 200. An...
Semileptonic beauty decays provide a theoretically clean probe of CKM Unitarity since their decay rates factorise into leptonic and hadronic currents. At hadron colliders the full kinematic properties of these decays cannot be determined due to the unreconstructable neutrino. The kinematics can however be inferred through the conservation of momentum perpendicular to the flight direction that...
Observing double Higgs production (HH) will enable a direct determination of the Higgs self-coupling, a crucial parameter of the Standard Model. Given the extreme small rate of this process, detecting it will only be possible with the HL-LHC and the 3 ab-1 of data it is expected to provide, and with an upgraded CMS detector capable to cope with high levels of radiation and pileup. Sensitivity...
Roman Pots are special devices that allow operation of detectors very close to the beam. This technique is used for measurements of forward protons, scattered in diffractive or electromagnetic interactions. Presently, several detectors housed in Roman Pots operate at LHC. The poster presents the physics motivation and first feasibility studies for such detectors the HL-LHC
Several theoretical models inspired in the idea of supersymmetry (SUSY) accommodate the possibility of HSCPs (Heavy Stable Charged Particles). The phase-II upgrade of the CMS-RPC system will allow the trigger and identification of these kind of particles exploiting the Time of Flight Technique with the improved time resolution that a new DAQ system will provide (~1ns). Moreover new RPC...
Top squark pair production in scenarios with compressed mass spectra are experimentally challenging. The reach at the high-luminosity phase of the LHC is expected to significantly extend beyond the current limits, when considering models where the top squarks decays via $\tilde{t}_{1} \rightarrow t\tilde\chi^0_1$. This poster presents benchmark studies targeting dileptonic final states with a...
Tau leptons play an important role in many Standard Model and Beyond the Standard Model physics processes that are being investigated at the LHC. This poster details studies of the expected performance of the reconstruction and identification of hadronic tau lepton decays using the ATLAS detector for the High Luminosity LHC (HL-LHC) upgrade.
The performance studies adapts the current ATLAS Tau...
We study $gg\to\gamma\gamma$ amplitudes by including $t\bar t$ bound-state effects near their mass threshold. In terms of the non-relativistic expansion of the amplitude, the LO contribution is an energy-independent term in the one-loop amplitude, and a part of the NLO contribution is described by the non-relativistic Green function. We find that due to the interference of these terms, the...
The CMS experiment is in the process of designing a completely new track detector for the high-luminosity phase of LHC. The results of the future offline tracking performance of CMS will be shown in this poster, such as the excellent efficiency and the very good track separation in the core of a jet. Moreover, some recent developments using the Outer Tracker are included in the poster. The...
