Dr. Dushmanta Sahu
Postdoctoral fellow
ICN, UNAM, Mexico City, Mexico
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About me
About me
I am a postdoctoral researcher with a strong background in experimental high-energy physics, currently based in ICN, UNAM, Mexico City. My work focuses on ALICE experiment at the LHC, CERN. I also work on phenomenology of relativistic heavy-ion collisions, specifically to understand the exotic state of matter called quark gluon plasma (QGP). Passionate about solving complex problems and exploring interdisciplinary ideas, I enjoy combining analytical rigor with creative thinking.
I have done my Bachelor's degree with Honours in Physics from T.F. College Bargarh, Odisha, India. My Master's degree was in High Energy Physics specialization from Sambalpur University, Odisha, India. I finished my PhD from the Indian Institute of Technology Indore, India, in June 2024 under the supervision of Porf. Raghunath Sahoo. My research topic concerned the Dileptons and Quarkonia PWG in the ALICE collaboration, where we look for polarization of $\psi$(2S) particle. Apart from that, I also worked on the possible formation of QGP droplets in high multiplicity proton+proton collisions, which sheds light on small system thermalization.
At ICN, UNAM, I am working as a research fellow (postdoc) with Prof. Antonio Ortiz. I am actively working on event activity classifiers such as flattenicity, R_T and speherocity to understand particle production dynamics in high energy collisions. I am currently looking into flattenicity dependent J/psi production using muon spectrometer at ALICE. I am also involved in works relating event generators based analysis of underlying events and jet-like events.
Recent Publications
Recent Publications
The Barnett effect is a fundamental magnetomechanical phenomenon in which a ferromagnetic material becomes magnetized under rotation. Using a hadron resonance gas (HRG) model under rigid rotation, we compute the Barnett magnetization (M_Barnett) and show that it produces a magnetic field (B_ind) comparable in magnitude to the well-known external field (B_ext) from spectator
protons at low energy heavy-ion collisions. This finding establishes the Barnett effect as a previously overlooked but essential source of magnetization and magnetic field in the heavy-ion collisions,
with profound implications for understanding spin dynamics and anomalous transport in quantum chromodynamics under extreme rotation.
We investigate the general susceptibilities in the charm sector by using the van der Waals hadron resonance gas model (VDWHRG). We argue that the ideal hadron resonance gas (HRG), which assumes no interactions between hadrons, and the excluded volume hadron resonance gas (EVHRG), which includes only repulsive interactions, fail to explain the lQCD data at very high temperatures. In contrast, the VDWHRG model, incorporating both attractive and repulsive interactions, extends the degree of agreement with lQCD up to nearly 180 MeV. We estimate the partial pressure in the charm sector and study charm susceptibility ratios in a baryon-rich environment, which is tricky for lattice quantum chromodynamics (lQCD) due to the fermion sign problem. Our study further solidifies the notion that the hadrons shouldn’t be treated as non-interacting particles, especially when studying higher order fluctuations, but rather one should consider both attractive and repulsive interactions between the hadrons.
Side Projects
Heavy-Ion Collision Simulator
Heavy-Ion Collision Simulator
I have made a toy-model to simulate and visualize high energy heavy-ion collisions. Please try the link below.
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