123942386
R&D STATUS OF THE HIGH-INTENSE MONOCHROMATIC LOW-ENERGY MUON SOURCE : PRISM
PRISM is in the works to build a future intense lowenergy muon source, which combines monochromaticity and high purity. In the PRISM project, an FFAG is used as the phase rotator to achieve the monochromatic muon beams. This paper will describe the design status the project.
54175451
MUSIC, THE WORLD'S HIGHEST INTENSE DC MUON BEAM USING A PION CAPTURE SYSTEM
MuSIC is a project to provide the world’s highestintensity muon beam with continuous time structure at Research Center of Nuclear Physics (RCNP) of Osaka University, Japan. A pion capture system using a superconducting solenoid magnet and a part of superconducting muon transport solenoid channel have been build in 2009. The highest muon production efficiency was demonstrated by the beam tests. Results of the beam test conclude that the MuSIC can provide more than 10 8 muons/sec using a 400 W proton beam.
119500971
Possible existence of new medium interactions and 3.1- and 3.7-GeV particles
18393881
Intense Muon Physics Working Group Summary
The intense muon beams which will be available at a neutrino factory provide a unique opportunity for searching for physics beyond the standard model, both in lepton flavor violation and in the search for a permanent electric dipole moment for the muon. Other experiments which can use intense muon beams will also be possible.
8106301
ZZ brane amplitudes from matrix models
We study instanton contribution to the partition function of the one matrix model in the k-th multicritical region, which corresponds to the (2,2k−1) minimal model coupled to Liouville theory. The instantons in the one matrix model are given by local extrema of the effective potential for a matrix eigenvalue and identified with the ZZ branes in Liouville theory. We show that the 2-instanton contribution in the partition function is universal as well as the 1-instanton contribution and that the connected part of the 2-instanton contribution reproduces the annulus amplitudes between the ZZ branes in Liouville theory. Our result serves as another nontrivial check on the correspondence between the instantons in the one matrix model and the ZZ branes in Liouville theory, and also suggests that the expansion of the partition function in terms of the instanton numbers are universal and gives systematically ZZ brane amplitudes in Liouville theory.
121688519
Symmetries and the mass ratio of the electron and muon
A model of symmetries and gauge interactions relating the electron and muon is considered. The model is based on the UL(1)⊗UR(1)⊗RL⊗RR group where UL(1)⊗UR(1) denotes the chiral e-μ rotation and RL⊗RR the chiral reflection of the electron field. The invariance under this group is spontaneously broken by the vacuum expectation values of scalar fields. A zeroth-order vacuum is found for which the zeroth-order electron mass vanishes, while one-loop corrections lead to a finite memμ ratio. The decay process μ → e + γ is strictly forbidden in this model.
126008905
An Asymmetric collider with the TRISTAN Main Ring