Exotic μ−−e− conversion in nuclei and R-parity violating supersymmetry

Faessler, Amand; Kosmas, T. S.; Kovalenko, Sergey; Vergados, J.D.

doi:10.1016/s0550-3213(00)00446-6

Cited by 52 publications

(91 citation statements)

References 58 publications

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“…5.3.1. However, the excluded combination of masses and couplings is not yet competitive with the more stringent bounds from the non-observation of μ-e conversion in nuclei [151,152].…”

Section: Sneutrino Lspmentioning

confidence: 99%

R-parity violation at the LHC

Dercks

Dreiner²,

Krauss³

et al. 2017

Eur. Phys. J. C

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We investigate the phenomenology of the MSSM extended by a single R-parity-violating coupling at the unification scale. For all R-parity-violating couplings, we discuss the evolution of the particle spectra through the renormalization group equations and the nature of the lightest supersymmetric particle (LSP) within the CMSSM, as an example of a specific complete supersymmetric model. We use the nature of the LSP to classify the possible signatures. For each possible scenario we present in detail the current LHC bounds on the supersymmetric particle masses, typically obtained using simplified models. From this we determine the present coverage of R-parity-violating models at the LHC. We find several gaps, in particular for a stau-LSP, which is easily obtained in R-parity-violating models. Using the program CheckMATE we recast existing LHC searches to set limits on the parameters of all R-parity-violating CMSSMs. We find that virtually all of them are either more strongly constrained or similarly constrained in comparison to the R-parity-conserving CMSSM, including theŪDD models. For each R-parity-violating CMSSM we then give the explicit lower mass bounds on all relevant supersymmetric particles.

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“…5.3.1. However, the excluded combination of masses and couplings is not yet competitive with the more stringent bounds from the non-observation of μ-e conversion in nuclei [151,152].…”

Section: Sneutrino Lspmentioning

confidence: 99%

R-parity violation at the LHC

Dercks

Dreiner²,

Krauss³

et al. 2017

Eur. Phys. J. C

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“…Thus we apply the usual approximation [4] 6) where the muon average probability density over the nucleus is…”

Section: Light Majorana Neutrino Exchange Mechanismmentioning

confidence: 99%

(μ−,μ+)conversion in nuclei as a probe of new physics

et al. 2002

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A detailed study of the muonic analogue of neutrinoless double beta decay, (µ − , µ + ) conversion, has been carried out for the A=44 nuclear system. We studied several lepton number violating (LNV) mechanisms potentially triggering this process: exchange by light and heavy Majorana neutrinos as well as exchange by supersymmetric particles participating in R-parity violating interactions. The nuclear structure has been taken into account within the renormalized Quasiparticle Random Phase Approximation method. To our knowledge, this is the first realistic treatment of nuclear structure aspects of the (µ − , µ + ) conversion. We estimated the rate of this process utilizing the existing experimental constraints on the parameters of the underlying LNV

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“…The theoretical studies of µ − − e − conversion, presented in the literature, cover various aspects of this LFV process: the adequate treatment of structure effects [4,16,17] of the nucleus participating in the reaction and the underlying mechanisms of LFV at the quark level within different scenarios of physics beyond the SM (see [3] and references therein).…”

Section: Introductionmentioning

confidence: 99%

Limits on lepton flavor violation fromμ−−e−conversion

et al. 2013

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We revisit the status of Lepton Flavor Violating (LFV) µeqq contact interactions from the view point of µ − − e − -conversion in nuclei. We consider their contribution to this LFV process via the two mechanisms on the hadronic level: direct nucleon and meson exchange ones. In the former case the quarks are embedded directly into the nucleons while in the latter in mesons which then interact with nucleons in a nucleus. We revise and in some cases reevaluate the hadronic parameters relevant for both mechanisms and calculate the contribution of the above mentioned contact interactions in coherent µ − − e − -conversion in various nuclei. Then we update our previous upper bounds and derive new ones for the scales of the µeqq contact interactions from the experimental limits on the capture rates of µ − − e − -conversion. We compare these limits with the ones derived in the literature from other LFV processes and comment on the prospects of LHC searches related to the contact µeqq interactions.

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Exotic μ−−e− conversion in nuclei and R-parity violating supersymmetry

Cited by 52 publications

References 58 publications

R-parity violation at the LHC

R-parity violation at the LHC

(μ−,μ+)conversion in nuclei as a probe of new physics

Limits on lepton flavor violation fromμ−−e−conversion

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