4.8 Article

Nonstandard Semileptonic Hyperon Decays

Journal

PHYSICAL REVIEW LETTERS
Volume 114, Issue 16, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.114.161802

Keywords

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Funding

  1. DOE [DE-SC0009919]
  2. LABEX Lyon Institute of Origins of the Universite de Lyon [ANR-10-LABX-0066]
  3. People Programme (Marie Curie Actions) of the European Union's Seventh Framework Programme (FP7) under REA grant [PIOF-GA-2012-330458]
  4. European FEDER funds [FIS2011-28853-C02-01]
  5. Spanish Ministerio de Economia y Competitividad

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We investigate the discovery potential of semileptonic hyperon decays in terms of searches of new physics at teraelectronvolt scales. These decays are controlled by a small SU(3)-flavor breaking parameter that allows for systematic expansions and accurate predictions in terms of a reduced dependence on hadronic form factors. We find that muonic modes are very sensitive to nonstandard scalar and tensor contributions and demonstrate that these could provide a powerful synergy with direct searches of new physics at the LHC.

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