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arXiv · 1903.03625

$\boldsymbol{C\!P}\!$ violation in Higgs-gauge interactions: from tabletop experiments to the LHC

Vincenzo Cirigliano·Andreas Crivellin·Wouter Dekens·Jordy de Vries·Martin Hoferichter·Emanuele Mereghetti
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Abstract

We investigate the interplay between the high- and low-energy phenomenology of $C\!P$-violating interactions of the Higgs boson with gauge bosons. For this purpose we use an effective field theory approach and consider all dimension-6 operators arising in so-called universal theories. We compute their loop-induced contributions to electric dipole moments and the $C\!P$ asymmetry in $B\to X_s\gamma$, and compare the resulting current and prospective constraints to the projected sensitivity of the LHC. Low-energy measurements are shown to generally have a far stronger constraining power, which results in highly correlated allowed regions in coupling space, a distinctive pattern that could be probed at the high-luminosity LHC.

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Vincenzo Cirigliano, Andreas Crivellin, Wouter Dekens, Jordy de Vries, Martin Hoferichter, Emanuele Mereghetti. 2019-03-08. $\boldsymbol{C\!P}\!$ violation in Higgs-gauge interactions: from tabletop experiments to the LHC. https://doi.org/10.1103/physrevlett.123.051801

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