XXXI. Collections in foreign geology .—[No. III.]

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Measurement of the CP properties of Higgs boson interactions with τ-leptons with the ATLAS detector

A study of the charge conjugation and parity (CP ) properties of the interaction between the Higgs boson and τ -leptons is presented. The study is based on a measurement of CP -sensitive angular observables defined by the visible decay products of τ -leptons produced in Higgs boson decays. The analysis uses 139 fb−1 of proton–proton collision data recorded at a centre-of-mass energy of √s=13 TeV with the ATLAS detector at the Large Hadron Collider. Contributions from CP -violating interactions between the Higgs boson and τ -leptons are described by a single mixing angle parameter ϕτ in the generalised Yukawa interaction. Without constraining the H→ττ signal strength to its expected value under the Standard Model hypothesis, the mixing angle ϕτ is measured to be 9∘±16∘ , with an expected value of 0∘±28∘ at the 68% confidence level. The pure CP -odd hypothesis is disfavoured at a level of 3.4 standard deviations. The results are compatible with the predictions for the Higgs boson in the Standard Model

Manuel géologique

İndeks

I. Collections in foreign geology .—[No. I.] : To the editors of the Philosophical Magazine and Annals

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Untersuchungen über theoretische Geologie

von H.T. De La Beche ; aus dem Englischen von Carl HartmannHandschriftliches Exlibris: "L. Rollier St. Imier 1887" 001390915_0001 Exemplar der ETH-BIBExlibrisstempel: "Geolog. Institut der Eidg. techn. Hochschule Bibliothek" 004070067_0002 Exemplar der ETH-BI

X. --On the Chalk and Sands beneath it (usually termed Green-sand) in the Vicinity of Lyme Regis, Dorset, and Beer, Devon.

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