The ALICE experiment is dedicated to the study of the quark gluon plasma in heavy-ion collisions at the CERN LHC. The Muon Forward Tracker (MFT) is under consideration by the ALICE experiment to be part of its program of detectors upgrade to be installed during the LHC Long Shutdown 2 (LS2) planned for 2018. Designed as a silicon pixel detector added in the Muon Spectrometer acceptance (−4.0 < ...

Muonium (M = μe) bound state effects are shown to decrease the muon decay rate by a factor of 1 − 5αme/mμ = 0.9999987. That small 1.3 ppm shift is near the sensitivity of proposed muon lifetime measurements. The annihilation rate Γ(M → νeν̄μ) is also computed and found to be ≃ 6.6 × 10Γ(μ → eνeν̄μ). Other potential medium effects on stopped muon decay are briefly discussed. The muon lifetime, τμ,...

The DELPHI detector at LEP, located 100 m underground, has been used to detect the multimuon bundles by cathode readout of its hadron calorimeter and its tracking detectors (TPC, muon chambers). The experimental apparatus allows us to study muon bundles originating from primary cosmic particles with energies in the interval 10 10 eV . The cosmic events registered during the years 1999 and 2000 ...

A lepton-flavor violating (LFV) Z ′ boson may mimic some of the phenomena usually attributed to supersymmetric theories. Using a conservative model of LFV Z ′ bosons, the recent BNL E821 muon g − 2 deviation allows for a LFV Z ′ interpretation with a boson mass up to 4.8 TeV while staying within limits set by muon conversion, μ → eγ, and μ → eee. This model is immediately testable as one to twe...

Muon-induced neutrons constitute a prominent background component in a number of low count rate experiments, namely direct searches for Dark Matter. In this work we describe a neutron detector to measure this background in an underground laboratory, the Laboratoire Souterrain de Modane. The system is based on 1 m3 of Gd-loaded scintillator and it is linked with the muon veto of the EDELWEISS-II...

A lepton-flavor violating (LFV) Z ′ boson may mimic some of the phenomena usually attributed to supersymmetric theories. Using a conservative model of LFV Z ′ bosons, the recent BNL E821 muon g − 2 deviation allows for a LFV Z ′ interpretation with a boson mass up to 4.8 TeV while staying within limits set by muon conversion, μ → eγ, and μ → eee. This model is immediately testable as one to twe...

In recent years, with the enlightenment of some issues encountered at muon colliders, colliders have become more feasible for high-energy physics community. For this reason, we studied single production excited via contact interaction. Besides, assumed that is produced interactions and decays to photon through gauge Then, signal background analyses were performed anti-muon collider options 6 Te...

Here we invoke the current and future perspective on muon g −2 measurement when asking what the muon g − 2 could tell about the underlying structure concerning with the hierarchy problem. Here we take up two such models, the presence of which turns out to alter the standard model prediction for muon g − 2 significantly: one is TeV scale gravity scenario, the other supersymmetric model, in the l...

We study a possibility of a measurement of muon Yukawa couplings in s-channel Higgs boson production at a muon collider with transversely polarized beams. We investigate sensitivity to the relative size of the CP-odd and CP-even muon Yukawa couplings. Provided the event rate observed justify the operation of the μμ Higgs boson factory, we have found that polarization degree 40% is sufficient to...