Higgs up-down<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>C</mml:mi><mml:mi>P</mml:mi></mml:math>asymmetry at the LHC

Delaunay, Cédric; Pérez, Gilad; Sandes, Hiroshi de; Skiba, Witold

doi:10.1103/physrevd.89.035004

Cited by 23 publications

(23 citation statements)

References 28 publications

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“…[13]. 2 Higher sensitivities to CP-odd couplings may be reached for instance through angular distribution measurements, in particular in vector-boson associated Higgs production channels where the Higgs boson can be significantly boosted [14,15].…”

Section: Constraints From Higgs Datamentioning

confidence: 99%

Enhanced Higgs boson coupling to charm pairs

et al. 2014

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We show that current Higgs data permit a significantly enhanced Higgs coupling to charm pairs, comparable to the Higgs-to-bottom pairs coupling in the Standard Model, without resorting to additional new physics sources in Higgs production. With a mild level of the latter current data even allow for the Higgs-to-charm pairs to be the dominant decay channel. An immediate consequence of such a large charm coupling is a significant reduction of the Higgs signal strengths into the known final states as in particular into bottom pairs. This might reduce the visible vector-boson associated Higgs production rate to a level that could compromise the prospects of ever observing it. We however demonstrate that a significant fraction of this reduced signal can be recovered by jet-flavor tagging targeted towards charm-flavored jets. Finally we argue that an enhanced Higgs-to-charm pairs coupling can be obtained in various new physics scenarios in the presence of only a mild accidental cancellation between various contributions.

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Section: Constraints From Higgs Datamentioning

confidence: 99%

Enhanced Higgs boson coupling to charm pairs

et al. 2014

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“…Another option to get sensitivity to C P-violation effects may rely on the usage of phase-space correlations, which may become feasible as more data is being recorded by the experiments. A variety of decay modes could be considered [15]. For instance, the diphoton h → γ γ channel could be promising provided that the photon polarization, a quantity directly related to C P violation, could be measured.…”

Section: Prospective Lhc Studies Using Differential Informationmentioning

confidence: 99%

“…Most studies, however, assume that the new physics contributions to the Higgs-boson couplings feature a C P-even structure, in particular when existing constraints on the effective operators are evaluated [5][6][7][8][9][10][11][12]. In comparison, the investigation of the effects of the C P-odd Higgs-boson effective operators has been relatively sparse [13][14][15][16][17][18][19], although some experimental analyses are available, e.g. [20,21].…”

Section: Introductionmentioning

confidence: 99%

Probing $$\textit{CP}$$-violating Higgs and gauge-boson couplings in the Standard Model effective field theory

et al. 2017

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We study the phenomenological consequences of several C P-violating structures that could arise in the Standard Model effective field theory framework. Focusing on operators involving electroweak gauge and/or Higgs bosons, we derive constraints originating from Run I LHC data. We then study the capabilities of the present and future LHC runs at higher energies to further probe associated C P-violating phenomena and we demonstrate how differential information can play a key role. We consider both traditional four-lepton probes of C P-violation in the Higgs sector and novel new physics handles based on varied angular and non-angular observables.

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“…There is a minus sign between the two pieces in the integrand of the Feynman parameter integral. From the analysis of [37], only the real part of the form factor a W 3 contributes to the final CP violation observable, i.e., a phase shift in azimuthal angle. In Fig.…”

Section: Vlq Models Representation Cp Violationmentioning

confidence: 99%

“…For the vectorlike quark doublet model we consider, a R is given by Eq. the hW associated production channel and the W W fusion channel [36,37].…”

Section: Vlq Models Representation Cp Violationmentioning

confidence: 99%

HiggsCPviolation from vectorlike quarks

2015

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We explore CP violating aspects in the Higgs sector of models where new vectorlike quarks carry Yukawa couplings mainly to the third generation quarks of the Standard Model. We point out that in the simplest model, Higgs CP violating interactions only exist in the hW W channel. At low energy, we find that rare B decays can place similarly strong constraints as those from electric dipole moments on the source of CP violation. These observations offer a new handle to discriminate from other Higgs CP violating scenarios such as scalar sector extensions of the Standard Model, and imply an interesting future interplay among limits from different experiments.

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Higgs up-downCPasymmetry at the LHC

Cited by 23 publications

References 28 publications

Enhanced Higgs boson coupling to charm pairs

Enhanced Higgs boson coupling to charm pairs

Probing $$\textit{CP}$$-violating Higgs and gauge-boson couplings in the Standard Model effective field theory

HiggsCPviolation from vectorlike quarks

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