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Search: authors:"Tobias Hurth"

5 papers found.
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Inclusive \( \overline{B}\to {X}_s{\ell}^{+}{\ell}^{-} \) : complete angular analysis and a thorough study of collinear photons

We investigate logarithmically enhanced electromagnetic corrections of all angular observables in inclusive \( \overline{B}\to {X}_s{\ell}^{+}{\ell}^{-} \). We present analytical results, which are supplemented by a dedicated Monte Carlo study on the treatment of collinear photons in order to determine the size of the electromagnetic logarithms. We then give the Standard Model...

Optimizing the basis of B → K * ℓ + ℓ − observables in the full kinematic range

We discuss the observables for the B → K *(→ Kπ)ℓ + ℓ − decay, focusing on both CP-averaged and CP-violating observables at large and low hadronic recoil with special emphasis on their low sensitivity to form-factor uncertainties. We identify an optimal basis of observables that balances theoretical and experimental advantages, which will guide the New Physics searches in the...

On the new physics reach of the decay mode \( {\bar{B}_d} \to {\bar{K}^{*0}}{\ell^{+} }{\ell^{-} } \)

We present a complete method to construct QCD-protected observables based on the exclusive 4-body B-meson decay \( {\bar{B}_d} \to {\bar{K}^{*0}}{\ell^{+} }{\ell^{-} } \) in the low dilepton mass region. The core of the method is the requirement that the constructed quantities should fulfil the symmetries of the angular distribution. We have identified all symmetries of the...

Four statements about the fourth generation

This summary of the Workshop "Beyond the 3-generation SM in the LHC era" presents a brief discussion of the following four statements about the fourth generation: 1) It is not excluded by EW precision data; 2) It addresses some of the currently open questions; 3) It can accommodate emerging possible hints of new physics; 4) LHC has the potential to discover or fully exclude it...