A search for μ-e conversion in muonic gold

Bertl, W.; Engfer, R.; Hermes, E.A.; Kurz, G.; Kozłowski, T.; Kuth, J.; Otter, G.; Rosenbaum, F.; Ryskulov, N.M.; Schaaf, A. van der; Wintz, P.; Zychor, I.

doi:10.1140/epjc/s2006-02582-x

Cited by 665 publications

(498 citation statements)

References 22 publications

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“…The parameter dependence of σ(pp → µ − e + ), σ(pp → j j), and BR(µ − N → e − N) in the case-I Light shaded region is excluded by the µ-e conversion search [5], and dark shaded band is excluded region by the muonium conversion search [19].…”

Section: Numerical Resultsmentioning

confidence: 99%

“…Solid lines are contours of BR(µ − Al → e − Al), which are translated from the single event sensitivities of each experiments (see Table I). Light shaded region is excluded by the µ-e conversion search at SINDRUM-II [5], and dark shaded band is excluded region by the muonium conversion search experiment [19]. For simplicity, we take the couplings universally in leptonic RPV sector: λ ≡ λ 312 = λ 321 = −λ 132 = −λ 231 .…”

Section: Numerical Resultsmentioning

confidence: 99%

“…In the parameter range between the SINDRUM-II limit and the PRISM reach, combining the measurement results of σ(pp → µ − e + ), σ(pp → j j), and BR(µ − Al → e − Al), the RPV couplings and the tau sneutrino mass will be precisely determined. the SINDRUM-II [5], which are translated into the limit for each nucleus from that for Au. Each line corresponds to the dijet production cross section at the LHC, σ(pp → j j), at √ s = 14TeV (left panels) and at √ s = 100TeV (right panels), respectively.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…Though other combinations of coupling constants can lead a significant µ − e conversion process, only those are considered here. This is because in most of scenarios in the supersymmetric theory, 5 ■■■ 025001-5 JPS Conf. Proc.…”

Section: Summary and Discussionmentioning

confidence: 99%

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Search for R-parity Violation from J-PARC and LHC

Yamanaka

2015

Proceedings of the 2nd International Symposium on Science at J-Parc — Unlocking the Mysteries of Life, Matter and the Universe

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We consider the case that µ-e conversion signal is discovered but other charged lepton flavor violating (cLFV) processes will never be found. In such a case, we need other approaches to confirm the µ-e conversion and its underlying physics without conventional cLFV searches. We study R-parity violating (RPV) SUSY models as a benchmark. We briefly review that our interesting case is realized in RPV SUSY models with reasonable settings according to current theoretical/experimental status. We focus on the exotic collider signatures at the LHC (pp → µ − e + and pp → j j) as the other approaches. We show the correlations between the branching ratio of µ-e conversion process and cross sections of these processes. It is first time that the correlations are graphically shown. We exhibit the RPV parameter dependence of the branching ratio and the cross sections, and discuss the feasibility to determine the parameters. This paper is based on Ref. [1].

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Section: Numerical Resultsmentioning

confidence: 99%

Section: Numerical Resultsmentioning

confidence: 99%

Section: Numerical Resultsmentioning

confidence: 99%

Section: Summary and Discussionmentioning

confidence: 99%

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Search for R-parity Violation from J-PARC and LHC

Yamanaka

2015

Proceedings of the 2nd International Symposium on Science at J-Parc — Unlocking the Mysteries of Life, Matter and the Universe

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“…In the aspect of experimental study, the current upper limits for muon-electron conversion in the nuclear field are given by the experiments at TRIUMF and PSI. The upper limit for gold is 7 × 10 −13 from the results of SINDRUM-II experiment at PSI [7], and upper limits for titanium are 4.3 × 10 −12 and 4.6 × 10 −12 from the results of SINDRUM-II [8] and an experiment at TRIUMF [9], respectively. The experimental results are getting closer to the level of thoeretical predictions and it is possible to reach the predicted level by improving the experimental sensitivity by only a few orders of magnitude.…”

Section: Introductionmentioning

confidence: 93%

Silicon Carbide Target for a Muon-Electron Conversion Search at J-PARC MLF

Nakatsugawa¹,

Aoki²,

Meigo³

et al. 2015

Proceedings of the 2nd International Symposium on Science at J-Parc — Unlocking the Mysteries of Life, Matter and the Universe

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It is considered that muon-electron conversion would be one of the most obvious evidence of the new physics beyond the standard model. An experimental search for muon-electron conversion in the nuclear field, DeeMe, is proposed at J-PARC Materials and Life Science Experimental Facility (MLF). DeeMe experiment will be carried out at a brand-new beamline (H-Line) which will be constructed at J-PARC MLF Muon Science Establishment (MUSE). The single event sensitivity achieved by the experiment with the current graphite production target of MUSE is estimated to be 1.2 × 10 −13 . This is smaller than the current upper limit but it is desirable to make the experiment more sensitive. In order to improve the sensitivity, it is planned to replace the graphite target with a silicon carbide (SiC) target. Thanks to the larger pion production rate and the larger muon capture rate of silicon nucleus, the number of muonic atoms formed in a SiC target is expected to be totally 6 times as large as in a graphite target and then the single event sensitivity for SiC target is estimated to be 2.1 × 10 −14 , nearly two orders of magnitudes below current upper limit. The current status of the preparation for the use of a SiC target is reported.

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Low‐energy precision tests of the standard model: a snapshot

Hertzog

2015

Annalen der Physik

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This brief review describes a class of uniquely crafted particle physics experiments that typically each tackle just one investigation-and they do that very well. The aim of these experiments is to both establish Standard Model parameters and also to provide unique tests in search of new physics. I provide a brief snapshot of many of the current activities, selected with a bias toward low-energy and high precision. These include searches for permanent electric dipole moments, charged lepton flavor violation, tests of the weak interaction, and other broad searches for deviations from very precise Standard Model predictions, such as the muon's anomalous magnetic moment. I highlight what drives these efforts and how they might impact a new Standard Model.

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A search for μ-e conversion in muonic gold

Cited by 665 publications

References 22 publications

Search for R-parity Violation from J-PARC and LHC

Search for R-parity Violation from J-PARC and LHC

Silicon Carbide Target for a Muon-Electron Conversion Search at J-PARC MLF

Low‐energy precision tests of the standard model: a snapshot

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