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Dr Jim J BrookeM.Sci.(Bristol), PhD

Lecturer in Experimental Particle Physics

Jim Brooke

Dr Jim J BrookeM.Sci.(Bristol), PhD

Lecturer in Experimental Particle Physics

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Research interests

I use the CMS detector at the CERN LHC to search for new physics at the energy frontier, in particular production of dark matter.  All we know about dark matter at the fundamental level, is that it possesses mass.  Motivated by this, I am exploring the relationship between dark matter and the Higgs boson, which is fundamental to generation of mass for the known Standard Model particles.  I am therefore testing whether the Higgs decays invisibly, which would be an indication of dark matter production via a Higgs boson.

I am also interested in searches for exotic long-lived particles.  Using the early LHC data, I developed a novel search for heavy, strongly-interacting particles that move slowly through the CMS detector and eventually stop, before decaying some time later.  I am currently interested in developing a dedicated detector that will search for production of particles with one-thousandth the charge of an electron.

A major challenge of the LHC is the online "Trigger" system, that selects events of interest in real time, to keep the data rate out of the detector to a manageable level.  I develop algorithms, hardware and software for the CMS Level 1 trigger.  We upgraded this system in 2016 using the latest generation in programmable logic devices, and high speed optical links.  Now I am planning an even more challenging upgrade, that will use at least an order of magnitude more information than the current system, to cope with the incredibly high rates of collisions that the LHC will deliver after 2025.

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Postal address:
HH Wills Physics Laboratory
Tyndall Avenue
Bristol
United Kingdom