A “Physics News” article I co-wrote about ATLAS searches for long-lived particles is featured on the CERN News page! Take a look here! It features my own search (which I’ve posted about before) as well as two other searches which came out this year from the group I lead: one looking for long-lived “dark photons”Continue reading “Long-lived particle searches featured on CERN “news” page”
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Searching for neutral long-lived particles with the full LHC run-2 dataset
My latest paper is on the arXiv today, to be submitted to JHEP (Journal of High Energy Physics): https://arxiv.org/abs/2203.01009 Here is a simple explanation… The Standard Model of particle physics encapsulates our best understanding of the building blocks of the universe to date, but we know it’s incomplete: there must ne new physics to accountContinue reading “Searching for neutral long-lived particles with the full LHC run-2 dataset”
Using machine learning to explore new-physics models
My latest paper preprint is out on the arXiv, submitted to the Sci Post Physics Core journal. https://arxiv.org/pdf/2202.05882.pdf We used an “analysis recycling” method combined with some artificial intelligence to figure out if new physics theories we compatible with the existing data from the LHC, using about 5-10x less computing power than might previously haveContinue reading “Using machine learning to explore new-physics models”
Re-using old measurements to set new constraints on composite dark matter
New paper out on the arXiv today, with Jonathan Butterworth, Suchita Kulkarni, and some talented UCL MSci students. http://arxiv.org/abs/2105.08494 “Dark Sector” models, in which a bunch of new particles (some of which could explain Dark Matter = DM) are connected to the particles we know about (the Standard Model = SM) only via their interactionContinue reading “Re-using old measurements to set new constraints on composite dark matter”
Measuring the four-lepton invariant mass spectrum
The latest paper I worked on is out on the arXiv today ! https://arxiv.org/abs/2103.01918 It’s a detector-corrected measurement of the four-lepton invariant mass spectrum at the LHC. A rich and varied assortment of Standard Model physics processes contribute to this spectrum, which make it a great place to search for deviations and signs of newContinue reading “Measuring the four-lepton invariant mass spectrum”