Muon detection in electron-positron annihilation for muon collider studies

Amapane N.; Antonelli M.; Anulli F.; Ballerini G.; Bandiera L.; Bartosik N.; Bauce M.; Bertolin A.; Biino C.; Blanco-Garcia O.R.; Boscolo M.; Brizzolari C.; Cappati A.; Casaburo F.; Casarsa M.; Cavoto G.; Cesarini G.; Collamati F.; Cotto G.; Curatolo C.; Di Nardo R.; Gonella F.; Hoh S.; Iacoangeli F.; Iafrati M.; Kiani B.; Li Voti R.; Lucchesi D.; Mascagna V.; Paccagnella A.; Pastrone N.; Pazzini J.; Pelliccioni M.; Ponzio B.; Prest M.; Ricci M.; Rosati S.; Rossin R.; Rotondo M.; Sans Planell O.; Sestini L.; Soldani M.; Triossi A.; Vallazza E.; Ventura S.; Zanetti M.

Muon detection in electron-positron annihilation for muon collider studies

Abstract

The investigation of the energy frontier in physics requires novel concept for future colliders. The idea of a muon collider is very appealing since it would aim to study particle collisions up to tens of TeV energy while offering a cleaner experimental environment with respect to hadronic colliders. One key element in the muon collider design is muon production with small emittance. Recently, the Low EMittance Muon Accelerator (LEMMA) collaboration has explored the close-to-threshold muon production by 45 GeV positron annihilating in a low Z material target. Muons are emerging with a natural small emittance. In this paper we describe the performance of a system of segmented absorbers with alternating active layers realized with fast Cherenkov detectors and a muon identification technique based on it. Passive layers were made of tungsten. Muons and electron beams data were collected in September 2018 at the H2 line in the North Area of the Conseil Européen pour la Recherche Nucléaire (CERN)