Research – a detailed list

I have deliberately chosen to explore the entire landscape of Quantum Chromodynamics research, engaging in projects spanning both high-energy and low-energy frontiers, and participating in both hardware and physics analysis. Below is a list of projects I’ve worked on. While not all of them resulted in tangible outputs, each project—whether successful or not—has provided me with valuable skills and techniques.

DEEPLY VIRTUAL MESON PRODUCTION – CLAS12 COLLABORATION

Keywords : DVMP | Gluon PDF | Neutron Analysis

Measurement of beam spin asymmetry of phi electro-production off of neutron. This measurement along with the results from phi production off of proton, gives an insight to the Gluon PDF in both proton and neutron.

Status : Project discontinued due to insufficient statistics for meaningful physics results.

VALIDATION OF GLAUBER MODEL IN SMALL SYSTEM COLLISIONS – PHENIX COLLABORATION

Keyword : d+Au Collisions | Glauber Model | QGP droplets

The nuclear modification factor (R_AA) of the pi0 is normalised by the R_AA of prompt photons at high p_T in d+Au collision system to circumvent the dependence on the Glauber model to determine the number of binary collisions in an event class. By doing this we show (i) The number of binary collision obtained through the Glauber model is off by 15% in peripheral collisions (ii) R_AA of central collisions (0-5%) and (5-10%) still show significant suppression.

Status : Paper submitted to PRL. Presently under review. Mentoring students on their on-going analysis of p+Au and ³He+Au collisions.

BUILDING OF TIME PROJECTION CHAMBER – SPHENIX COLLABORATION

Keywords : Hardware project | Tracking Detector | Quarkonia Melting

The Debye screening length of the Quark Gluon Plasma at RHIC energy can be measured by observing the sequential melting of the different states (1S, 2S and 3S) of the Upsilon particle. At sPHENIX, the Upsilon particle will be reconstructed through its two electron decay channel. The tracking detector, built by Hemmick’s group at Stony Brook University, in a 1.5 Tesla magnetic field provides the resolution required for reconstruction of this channel. In this project, I also developed a hough transformation based algorithm for track identification and fitting.

Status : Construction completed. Detector installed at BNL, Feb 2023.

TIME PROJECTION CHAMBER-CHERENKOV (TPCC)

A novel study for a generic detector for Electron-Ion Collider used the same detector volume as a time projection chamber and a Cherenkov PID detector. Built a prototype of this detector with zig-zag readout and tested it at Fermilab in summer 2016.

Status : Paper published in IEEE : Results From a Prototype Combination TPC Cherenkov Detector With GEM Readout

PARTICLE IDENTIFICATION WITH PHENIX EMCAL

For a low p_T, flow analysis, the particle identification with TOF detector at PHENIX did not cover all the sectors. So I calibrated the Electro-Magnetic Calorimeter to use the timing information for particle identification.

Status : Project discontinued.

FLOW ANALYSIS WITH MPCEX DETECTOR

MPCEX was a high granular forward detector, placed in PHENIX sub-system to understand jet and flow physics are forward and backward rapidity. Worked on the calibration of the detector and the analysis of d+Au dataset for low pT flow measurement in the forward region.