Tootfinder

Before the Large Hadron Collider,
the same 27 km tunnel housed
LEP: the Large electron-positron collider.
In the early 2000s, the infrastructure for the Large Electron Positron collider was removed and replaced with new infrastructure for the Large Hadron Collider: the currently-running LHC.
After the LHC is retired, going back to colliding electrons and positrons in the same tunnel is an option that should be explored for building a Higgs factory:
not for its …

The fastest, cheapest particle physics path to a Higgs factory
A next-generation collider is required for studying particle physics at the frontiers. Here's the fastest, cheapest way to get it done.

Prospects for Higgs Boson Research at the LHC
Andre Sopczak
https://arxiv.org/abs/2509.22455 https://arxiv.org/pdf/2509.22455

Prospects for Higgs Boson Research at the LHC
The search for Higgs bosons in the Standard Model (SM) of particle physics and Beyond the Standard Model (BSM) started intensively at the Large Electron-Positron (LEP) collider, which operated from 1989 to 2000, and later at the Tevatron from 2001 to 2011. In 2012, with the discovery of a Higgs boson at the Large Hadron Collider (LHC) at CERN, a new era began. This allowed for precision measurements of the Higgs boson properties which, so far, are all consistent with the SM expectations. Many s…