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Chang, Darwin; Keung, Wai-Yee; Phillips, Ivan

doi:10.1103/physrevd.48.3225

Cited by 94 publications

(82 citation statements)

References 34 publications

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“…These new interactions can be searched for at the upcoming generation of colliders in several ways (see [2] for a collection of recent results). The decays of Higgs bosons to τ − τ + leptons and/or -if the Higgs bosons are heavy enough -to tt quarks are particularly suited in this respect [4,5,6,7,8,9,10]. In this letter we show that, at the LHC, the CP nature of a neutral Higgs boson can be pinned down with appropriately chosen observables in its τ − τ + decay channel where the τ decay into three charged pions, provided that sufficiently large event numbers will eventually be available.…”

Section: Introductionmentioning

confidence: 99%

Determining theCPParity of Higgs Bosons via TheirτDecay Channels at the Large Hadron Collider

2008

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If neutral Higgs bosons will be discovered at the CERN Large Hadron Collider (LHC) then an important subsequent issue will be the investigation of their CP nature. Higgs boson decays into τ lepton pairs are particularly suited in this respect. Analyzing the three charged pion decay modes of the τ leptons and taking expected measurement uncertainties at the LHC into account, we show that the CP properties of a Higgs boson can be pinned down with appropriately chosen observables, provided that sufficiently large event numbers will eventually be available.

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Section: Introductionmentioning

confidence: 99%

Determining theCPParity of Higgs Bosons via TheirτDecay Channels at the Large Hadron Collider

2008

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“…Some of these have been studied mostly in purely phenomenological formulations, i.e., without working in terms of gauge invariant dimension-6 operators or without performing a realistic simulation of events ( [8,11,12,19,28,31,32,34,38,39]). For generic observables like p T and rapidity distributions which are affected by both CP-even as well as CP-odd couplings, it may not be possible to separate the effect of the two couplings with sufficient statistical significance.…”

Section: Couplingmentioning

confidence: 99%

DistinguishingCP-odd couplings of the Higgs boson to weak boson pairs

Dwivedi¹,

Ghosh²,

Mukhopadhyaya³

et al. 2016

Phys. Rev. D

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We consider the observable effects of CP-violating anomalous ZZh interaction arising from gauge invariant dimension-6 operators at the Large Hadron Collider (LHC), with the purpose of distinguishing them from not only the standard model effects but also those of CP-even anomalous interactions of similar nature. The postulation of a gauge invariant origin makes various couplings of this kind interrelated. The updated constraints from the LHC as well as limits from neutron and electron dipole moments are used in selecting the benchmark interaction strengths. We use some asymmetry parameters that have no contribution from standard or CP-even anomalous interactions. Parton showering and detector level simulation is included to make our analysis as realistic as possible. On the whole, we conclude that gauge invariant interaction of strength ≥ 40/TeV 2 can be successfully isolated using integrated luminosities in the 1.5-3.0 ab −1 range.

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“…We will describe below these two works. Other related works can be found in [57,196,197,198,199,200,201,202].…”

Section: Cp Asymmetries In E + E − → Zh and In The Subsequent Higgs Dmentioning

confidence: 99%

CP violation in top physics

et al. 2001

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CP violation in top physics is reviewed. The Standard Model has negligible effects, consequently CP violation searches involving the top quark may constitute the best way to look for physics beyond the Standard Model. Non-standard sources of CP violation due to an extended Higgs sector with and without natural flavor conservation and supersymmetric theories are discussed. Experimental feasibility of detecting CP violation effects in top quark production and decays in high energy e + e − , γγ, µ + µ − , pp and pp colliders are surveyed. Searches for the electric, electro-weak and the chromo-electric dipole moments of the top quark in e + e − → tt and in pp → ttX are descibed. In addition, other mechanisms that appear promising for experiments, e.g., tree-level CP violation in e + e − → tth, ttZ, ttν eνe and in the top decay t → bτ ν τ and CP violation driven by s-channel Higgs exchanges in pp, γγ, µ + µ − → tt etc., are also discussed. * A 2-up version of this postscript file may be obtained at the url

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CP-odd correlation in the decay of a neutral Higgs boson intoZZ,W+W−

Cited by 94 publications

References 34 publications

Determining theCPParity of Higgs Bosons via TheirτDecay Channels at the Large Hadron Collider

Determining theCPParity of Higgs Bosons via TheirτDecay Channels at the Large Hadron Collider

DistinguishingCP-odd couplings of the Higgs boson to weak boson pairs

CP violation in top physics

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