{"arxiv_id":"hep-ph/9402224","incoming":{"papers":32,"sentences":41,"groups":[{"kind":"data_used","label":"Uses its data or values","papers":4,"sentences":4,"quotes":[{"arxiv_id":"0901.3589","title":"The Search for Heavy Majorana Neutrinos","url":"/paper/0901.3589","section":"Electroweak Precision Tests","sentence":"A combined analysis of an old set of unitarity bounds [ref] , which does not include the one from the CKM matrix determination, leads to the following limits at 90% C.L. $|V_e4|^2 < 0.012, |V_μ4|^2< 0.0096 |V_τ4|^2 <0.016.$ If the CKM matrix constraint is included and partial cancellations between the contributions of different flavors are taken into account, a previous combined study [ref] then gives the more robust limits at $90%$ C.L., $|V_e4|^2 < 0.0066, |V_μ4|^2< 0.0060$ and $|V_τ4|^2 <0.018$.","intent_p":0.85,"contests_p":null},{"arxiv_id":"0910.5957","title":"Non-unitary Leptonic Mixing and Leptogenesis","url":"/paper/0910.5957","section":"Non-unitarity relation to high-energy observables in the I seesaw model","sentence":"If we parametrize the non-unitary leptonic mixing matrix $N$ as [ref] [equation] where $η$ is Hermitian and $U$ is unitary, then $η_αβ$ is related to the coefficient matrix $c_αβ^d=6$ by [equation] In [ref] , the following constraints on these parameters at the $90 %$ C.L. were derived: $η_ee<2.0 ·10^-3$, $η_e μ<5.9 ·10^-5$, $η_e τ<1.6 ·10^-3$, $η_μμ<8.2 ·10^-4$, $η_μτ<1.0 ·10^-3$ and $η_ττ<2.6 ·10^-3$.","intent_p":0.96,"contests_p":null},{"arxiv_id":"2603.12385","title":"Testing the unitarity of the light neutrino mixing matrix","url":"/paper/2603.12385","section":"Introduction","sentence":"They are constrained by global fits to high precision electroweak data at the level of $δ_e ≲2×10^-3$, $δ_μ≲2×10^-4$ and $δ_τ≲5×10^-3$ [ref] .","intent_p":0.92,"contests_p":null},{"arxiv_id":"1105.0593","title":"Neutrino Mass and $\\mu \\rightarrow e + \\gamma $ from a Mini-Seesaw","url":"/paper/1105.0593","section":"Other Bounds","sentence":"The bounds of Ref. [ref] can be summarized as θ_e^2 < 7.1×10^-3 for M_N>0.14 GeV (m_π), θ_μ^2 < 1.4×10^-3 for M_N>1.15 GeV (m_Λ), θ_τ^2 < 1.7×10^-2 for M_N>1.777 GeV (m_τ).","intent_p":0.99,"contests_p":null}]},{"kind":"comparison","label":"Compares with it","papers":1,"sentences":2,"quotes":[{"arxiv_id":"0803.4008","title":"Effects of new leptons in Electroweak Precision Data","url":"/paper/0803.4008","section":"Conclusions","sentence":"In the cases that had been analyzed before [ref] , we find more stringent limits (at the few per cent level).","intent_p":0.98,"contests_p":null}]},{"kind":"background","label":"Cites it as background","papers":10,"sentences":10,"quotes":[{"arxiv_id":"1602.00864","title":"Neutrino oscillations and the seesaw origin of neutrino mass","url":"/paper/1602.00864","section":"Weak universality bounds","sentence":"Universality constraints derived from the CKM matrix elements [ref] as well as from pion decay [ref] has been extensevily analyzed and dedicated studies have been devoted to this subject [ref] .","intent_p":0.97,"contests_p":null},{"arxiv_id":"2408.13232","title":"Non-unitary limits on different textures for low-scale seesaw models","url":"/paper/2408.13232","section":"Non-unitary effects","sentence":"Commonly, the non-unitary effects are searched in the oscillation experiments, searching an anomaly in the number of neutrino species that are detected [ref] .","intent_p":0.93,"contests_p":null},{"arxiv_id":"1903.01474","title":"New Weinberg operator for neutrino mass and its seesaw origin","url":"/paper/1903.01474","section":"Introduction","sentence":"The non-unitarity of the leptonic mixing matrix induced by the presence of heavy neutrinos has been studied in several works (see for instance [ref] ).","intent_p":0.92,"contests_p":null},{"arxiv_id":"1111.5332","title":"Leptonic CP violation","url":"/paper/1111.5332","section":"NU constraints from electroweak decays","sentence":"It has been known for quite a long time that nonunitarity of the leptonic mixing matrix induced by light-heavy neutrino mixing can manifest itself in tree-level processes like $π$, $W$, and $Z$ decays [ref] , in rare charged-lepton decays $l_j→l_iγ$, $l_j→3l_j$, $l_j→l_il_il_k$, and $μ$-$e$ conversion in nuclei [ref] .","intent_p":0.82,"contests_p":null},{"arxiv_id":"1105.0593","title":"Neutrino Mass and $\\mu \\rightarrow e + \\gamma $ from a Mini-Seesaw","url":"/paper/1105.0593","section":"Other Bounds","sentence":"Ref. [ref] has detailed a number of bounds for sterile neutrinos that mix with SM neutrinos.","intent_p":0.8,"contests_p":null}]}],"unlabelled_sentences":25},"outgoing":{"papers":0,"sentences":0,"groups":[],"unlabelled_sentences":0},"claims":[],"thresholds":{"intent_p":0.8,"supports_p":0.95,"contests_p":0.7},"method":"Citing sentences come from each paper's LaTeX source; every \\cite marks the sentence and the works it cites. Pith's classifier typed each sentence. A label is shown at intent probability 0.8 or more (0.95 for support), a contest at 0.7 or more. Measured accuracy against two blind model families is at https://pith.science/accuracy. The quoted sentences are the citing authors' own.","held_up":null,"_links":{"html":"https://pith.science/paper/hep-ph/9402224"}}