Near-threshold production of $W^\pm$, $Z^0$ and $H^0$ at a fixed-target experiment at the future ultra-high-energy proton colliders

Abstract : We outline the opportunities to study the production of the Standard Model bosons, $W^\pm$, $Z^0$ and $H^0$ at "low" energies at fixed-target experiments based at possible future ultra-high-energy proton colliders, \ie\ the High-Energy LHC, the Super proton-proton Collider and the Future Circular Collider -- hadron-hadron. These can be indeed made in conjunction with the proposed future colliders designed to reach up to $\sqrt{s}=100$ TeV by using bent crystals to extract part of the halo of the beam which would then impinge on a fixed target. Without disturbing the collider operation, this technique allows for the extraction of a substantial amount of particles in addition to serve for a beam-cleaning purpose. With this method, high-luminosity fixed-target studies at centre-of-mass energies above the $W^\pm$, $Z^0$ and $H^0$ masses, $\sqrt{s} \simeq 170-300$ GeV, are possible. We also discuss the possibility offered by an internal gas target, which can also be used as luminosity monitor by studying the beam transverse shape.
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Contributor : Sophie Heurteau <>
Submitted on : Monday, August 17, 2015 - 3:16:00 PM
Last modification on : Thursday, January 11, 2018 - 6:12:40 AM

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J. P. Lansberg, R. Mikkelsen, U. I. Uggerhøj. Near-threshold production of $W^\pm$, $Z^0$ and $H^0$ at a fixed-target experiment at the future ultra-high-energy proton colliders. Advances in High Energy Physics, Hindawi Publishing Corporation, 2015, 2015, pp.249167. ⟨10.1155/2015/249167⟩. ⟨in2p3-01184743⟩

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