Details

Autor(en) / Beteiligte

• He, Xiao-Gang
• Tandean, Jusak
• Valencia, German

Titel

Charged-lepton-flavor violation in |ΔS| = 1 hyperon decays

Ist Teil von

• The journal of high energy physics, 2019-07, Vol.2019 (7), p.1-25, Article 22

Ort / Verlag

Berlin/Heidelberg: Springer Berlin Heidelberg

Erscheinungsjahr

2019

Link zum Volltext

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• A bstract Studies of lepton-flavor violation in strangeness-changing (|Δ S | = 1) transitions have a long tradition in the kaon sector where they provide some of the strongest limits on physics beyond the standard model. Recent hints of violation of lepton-flavor universality in B -meson decays have revived interest in lepton-flavor violation as the two phenomena appear simultaneously in many extensions of the standard model. At the same time, the LHCb experiment has produced new results for the hyperon process Σ + → pμ + μ − and may be in a position to study other rare hyperon decay modes. With this in mind, we investigate |Δ S | = 1 hyperon decays into different-flavor lepton pairs e ± μ ∓ in a model-independent manner and contrast the coverage of parameter space that can be achieved with what is known from kaon modes. We include a comparison with selected two-body leptonic decays of charged mesons, with K → πν v ¯ modes, with μ → e conversion, and with lepton-flavor violating decays of other neutral mesons, all of which constrain the same parameter space in a complementary way.