Speaker
Description
The Large Hadron electron Collider is a proposed upgrade of the HL-LHC. It will add an energy recovery racetrack to the CERN accelerator complex. The ERL will provide 50 GeV electrons to collide with the LHC beams, resulting in $ep$ ($eA$) collisions with cms energies $\sim 1.2\ (0.75)$ TeV/nucleon and instantaneous luminosities $\sim 10^{34}\ (5\cdot 10^{32}$) cm$^{-2}$s$^{-1}$. It could be built to start operation after the HL-LHC, and deliver integrated ep luminosities around 1 ab$^{-1}$, serving as a bridge between the LHC and the next flagship project at CERN. After a brief introduction to the accelerator and detector, in this contribution we show how the LHeC will empower the HL-LHC program by providing physics input, prominently PDFs and $\alpha_s$, needed for reduce uncertainties in measurements, such us in determinations of $M_W$, $\sin^2\theta_W$ or the Higgs cross section and mass, and for enlarging the reach for searches.
