Performance study of the MetaRing with Gb/s links

The tau lepton: Particle physics in a nutshell

“…nicely consistent with recent experimental results [32]. Up to this point only relations among decay rates have been considered.…”

“…However, additional theoretical input is needed for the KKπ channel which has contributions from both J P = 1 + and 1 − . In fact, recent experimental results [32] seem to confirm theoretical predictions [33,34] of axial dominance.…”

TAU 98 conference summary

“…Measurements of the total branching fractions to different exclusive final states (e.g., hnπ 0 ν τ , n = 0...4, 3hnπ 0 ν τ , n = 0...3, 5hnπ 0 ν τ , n = 0...1, with h = π ± or K ± ; or ηnπ 0 ν τ , n = 2...3) have been refined for many years, and remain important work; recent results from DELPHI are presented in [37]. Branching fractions for final states containing kaons (K ± , K 0 S , and K 0 L ) are presented in [38][39][40] and are discussed in more detail in section 11. The world average summaries of all the semi-hadronic exclusive branching fractions are reviewed in [41].…”

“…Kaons are relatively rare in tau decay, and modes beyond Kν τ and K * ν τ are only being measured with some precision in recent years. At TAU 98, ALEPH presented [40] branching fractions for 27 distinct modes with K ± , K 0 S , and/or K 0 L mesons, including K3π; DELPHI presented [39] 12 new (preliminary) branching fractions, and CLEO presented [38] an analysis of four modes of the form K − h + π − (π 0 )ν τ . In the Kπ system, ALEPH sees a hint of K * ′ (1410), with an amplitude (relative to K * (892)) which is in good agreement with the analogous quantity from τ → (ρ, ρ ′ )ν τ .…”

“…ALEPH studies the KKπ structure, and finds [40] that K * K is dominant, with little contribution from ρπ, ρ → KK. The KKπ mass spectrum is consistent with coming entirely from a 1 → KKπ, although there may be a large vector component.…”