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Muon decay in orbit: spectrum of high-energy electrons

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arxiv 1106.4756 v2 pith:DXWTXQDW submitted 2011-06-23 hep-ph hep-ex

classification hep-phhep-ex
keywords muondecaytheyanalysisbackgroundbackground-spectrumbeenbetter
verification ladder T0 review T1 audit T2 compute T3 formal
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Experimental searches for lepton-flavor-violating coherent muon-to-electron conversion in the field of a nucleus, have been proposed to reach the unprecedented sensitivity of 10^(-16) - 10^(-18) per stopped muon. At that level, they probe new interactions at effective-mass scales well beyond 1000 TeV. However, they must contend with background from ordinary bound muon decay. To better understand the background-spectrum shape and rate, we have carried out a detailed analysis of Coulombic-bound-state muon decay, including nuclear recoil. Implications for future experiments are briefly discussed.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. An effective field theory for muon conversion and muon decay-in-orbit

    hep-ph 2024-12 conditional novelty 7.0 of 10

    A five-stage EFT tower factorizes QED corrections to muon conversion and decay-in-orbit near the endpoint, yielding a resummed NLL-corrected signal shape.

  2. Radiative Corrections in Bound States: Recent Results

    hep-ph 2026-06 unverdicted novelty 6.0 of 10

    New calculations of radiative corrections for bound-muon decay rates in light nuclei resolving a Z=8 discrepancy and for parapositronium three-photon decay including Z boson, with the latter rate much smaller than estimated.

  3. $\mu^- \to e^-\gamma$ in a muonic atom as a probe for effective lepton flavor violating operators involving photon fields

    hep-ph 2024-11 conditional novelty 6.0 of 10

    A muonic atom's muon can decay to an electron and photon through two-photon flavor-violating operators, and this process could be observable in future muon experiments for heavy target nuclei.

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