Research Projects

This research project aims to advance both the scientific and technological frontiers of high-energy particle physics using data collected by the CMS experiment at the Large Hadron Collider (LHC) and its future upgrade, the High-Luminosity LHC (HL-LHC). The scientific goals focus on searches for Supersymmetry (SUSY) and precision studies of rare Standard Model (SM) processes. Complementary to these physics objectives, technical contributions are planned toward the construction and validation of detector components for HL-LHC operations, particularly in the context of the High Granularity Calorimeter (HGCal) upgrade. A dedicated search for SUSY in photon--lepton final states, using the full Run~2 dataset at \(\sqrt{s} = 13~\mathrm{TeV}\), is ongoing and targeted for completion. These final states are motivated by general gauge mediation models and are characterised by low SM background contamination and high sensitivity to new physics. Background estimation relies on advanced data-driven techniques, and results will be interpreted using multichannel statistical methods within the simplified SUSY model framework. In parallel, a precision measurement of the rare SM process \(tWZ\) is targeted using the complete Run~3 dataset (\(\sim 300~\mathrm{fb}^{-1}\) at \(\sqrt{s} = 13.6~\mathrm{TeV}\)). This process is sensitive to potential modifications in the electroweak sector and serves as a valuable test of the SM. The analysis strategy involves multilepton final states, multivariate classifiers, and simultaneous maximum likelihood fits incorporating theoretical and detector systematic uncertainties. The outcome is expected to constrain the Wilson coefficients in the Standard Model Effective Field Theory (SMEFT) framework. In addition to data analysis, the research plan includes involvement in the assembly and quality assurance of HGCal modules at the TIFR Module Assembly Centre. Activities will include pilot production of modules, finalisation of standard operating procedures (SOPs), and deployment of automation technologies such as robotic gantries for large-scale assembly. These efforts aim to support the timely delivery and high-performance operation of the HGCal detector under HL-LHC conditions. By bridging phenomenological analyses with detector R\&D, this research plan aims to contribute to both the discovery potential in new physics searches and readiness for future experimental challenges at the HL-LHC.