In Geneva, Dr Archana Sharma is spearheading CERN's next frontier: hunting for dark matter as the Large Hadron Collider shifts into its High Luminosity phase.
The upgrade, dubbed HL‑LHC, will crank the collider’s collision rate up tenfold, meaning one year of data will match a decade’s worth of the current machine’s output. This surge in statistics is critical because any dark‑matter signature is expected to be exceedingly rare, buried in a sea of ordinary particle interactions.
Dark matter remains invisible; it neither emits nor absorbs light, yet its gravitational fingerprints are unmistakable in the rotation curves of galaxies and the mass distribution of galaxy clusters. By smashing protons together at near‑luminal speeds, CERN hopes to produce the elusive particles and capture their subtle traces in the upgraded detectors.
Recent runs have already spotted exotic composite particles built from heavy quarks, expanding the known spectrum of matter. Dr Sharma noted that these findings hint at new physics beyond the Standard Model, potentially opening doors to dark‑matter candidates.
Behind the big headlines is a team of ordinary scientists and students. A 28‑year‑old PhD candidate from Bengaluru now spends his nights sifting through terabytes of collision data, dreaming of the moment when a dark‑matter event pops up on his screen. He says the possibility of contributing to a discovery that could rewrite cosmology keeps him awake at night.
CERN officials plan to analyze the first batch of HL‑LHC data within the next few months, hoping to spot the faint signatures that could confirm the existence of dark matter and bring us one step closer to understanding the universe’s hidden bulk.