Future circular collider based lepton–hadron and photon–hadron colliders: Luminosity and physics

Abstract

Construction of future electron-positron colliders (or dedicated electron linac) and muon colliders (or dedicated muon ring) tangential to Future Circular Collider (FCC) will give opportunity to utilize highest energy proton and nucleus beams for lepton-hadron and photon-hadron collisions. Luminosity values of FCC based ep, µp, eA, µA, γp and γA colliders are estimated. Multi-TeV center of mass energy ep colliders based on the FCC and linear colliders (LC) are considered in detail. Parameters of upgraded versions of the FCC proton beam are determined to optimize luminosity of electron-proton collisions keeping beam-beam effects in mind. Numerical calculations are performed using a currently being developed collision point simulator. It is shown that Lep ∼ 10 32 cm −2 s −1 can be achieved with LHeC-like upgrade of the FCC parameters. *

Single production of the excited electrons in the future FCC-based lepton–hadron colliders

“…The energy of the electrons in the electron ring of the TLEP is limited because of the large synchrotron radiation. Therefore, to reach higher energy electron beam the establishment of a linear electron accelerator tangential to the FCC ring has been recently proposed in [30], using the parameters of the known linear electron collider projects, namely ILC (International Linear Collider) [31] and PWFA-LC (Plasma Wake Field Accelerator -Linear Collider) [32]. Thus, the FCC-based many electron-proton collider options have been obtained when we also consider the nominal energy values, that can be upgraded, of the ILC and the PWFA-LC.…”

Heavy Majorana neutrino production at future ep colliders

“…The mixing parameter between electron and the heavy Majorana neutrino is strictly constrained [26,27] and the tau lepton is hard to be reconstructed, therefore we purely concentrate on the di-muon production channel at future e − p colliders, e.g. LHeC [28], FCCep [29], ILC⊗FCC [30]. This paper is organized as follows.…”

Resonant production of color octet muons at Future Circular Collider-based muon-proton colliders

“…[5] the ultimate case of muon beams with 50 TeV energy [2] had been taken into account as an option for 100 TeV CM energy µp colliders assuming that a 50 TeV proton ring would be added into the µC tunnel and a luminosity value ∼ 10 33 cm −2 s −1 is estimated. The FCC based muon-proton and muonlead ion colliders' main parameter calculations were performed in a recent paper which considers beam-beam effects and a basic collider parameter optimization [7].…”

“…Parameters of the FCC-based muon proton colliders are given in Table I. The first four colliders [7] use the most recent design parameters of MAP [1]. The last row corresponds to the ultimate case with 20 TeV muon beams in the FCC tunnel.…”