Determining the<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>Parity of Higgs Bosons via Their<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>τ</mml:mi></mml:math>Decay Channels at the Large Hadron Collider

Berge, Stefan; Bernreuther, W.; Ziethe, J.

doi:10.1103/physrevlett.100.171605

Cited by 70 publications

(50 citation statements)

References 19 publications

(22 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[37,38]. Further discriminatory power between the gluon fusion and weak boson fusion production mechanisms could also be gained by using likelihood methods as in Ref.…”

Section: Estimated Limits On Cp Propertiesmentioning

confidence: 99%

“…The majority of previous studies on CP in h → ττ focus on methods for measuring the polarization properties of the Higgs decay products [37][38][39][40][41]. This requires knowledge of the impact parameter or rest frame of the τs, both of which are difficult quantities to reconstruct in a hadron collider environment (although see Refs.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

ConstrainingCP-violating Higgs sectors at the LHC using gluon fusion

et al. 2014

View full text Add to dashboard Cite

Publisher's copyright statement:Reprinted with permission from the American Physical Society: Physical Review D 90, 073008 c 2014 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modied, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society. Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. We investigate the constraints that the LHC can set on a 126 GeV Higgs boson that is an admixture of CP eigenstates. Traditional analyses rely on Higgs couplings to massive vector bosons, which are suppressed for CP-odd couplings, so that these analyses have limited sensitivity. Instead we focus on Higgs production in gluon fusion, which occurs at the same order in α S for both CP-even and -odd Higgs couplings to top quarks. We study the Higgs plus two jet final state followed by Higgs decay into a pair of tau leptons. We show that using the 8 TeV data set it is possible to rule out the pure CP-odd hypothesis in this channel alone at nearly 95% C.L, assuming that the Higgs is CP-even. We also provide projected limits for the 14 TeV LHC run.

show abstract

“…[37,38]. Further discriminatory power between the gluon fusion and weak boson fusion production mechanisms could also be gained by using likelihood methods as in Ref.…”

Section: Estimated Limits On Cp Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

ConstrainingCP-violating Higgs sectors at the LHC using gluon fusion

et al. 2014

View full text Add to dashboard Cite

show abstract

“…Indirect effects may appear in the electric dipole moments (EDMs) of the electron and neutron [28], modifications in meson mixing parameters [29], or anomalous ZZZ couplings [30], while direct effects may be discovered in hτ þ τ − or htt vertices through measuring the final-state distributions [31]. If another scalar is discovered and we denote the scalars as h 1;2 (h 1 is the SM-like Higgs boson and h 2 is the extra scalar), we can also discover CP violation in the scalar sector through directly measuring tree-level vector-vector-scalar-(VVS) and vector-scalar-scalar-type (VSS) vertices, such as h 2 VV and Vh 1 h 2 vertices, 2 according to the analysis of CP properties [24].…”

Section: Introductionmentioning

confidence: 99%

Spontaneous CP -violation in the simplest little Higgs model and its future collider tests: The scalar sector

Mao

2018

Phys. Rev. D

View full text Add to dashboard Cite

We propose spontaneous CP violation in the simplest little Higgs model. In this model, the pseudoscalar field can acquire a nonzero vacuum expectation value. This leads to a mixing between the two scalars with different CP charge, which means that spontaneous CP violation occurs. It is also a connection between the composite Higgs mechanism and CP violation. Facing the experimental constraints, the model is still viable for both scenarios in which the extra scalar appears below or around the electroweak scale. We also discuss the future collider tests of CP violation in the scalar sector through measuring h 2 ZZ and h 1 h 2 Z 0 vertices (see the definitions of the particles in the text), which provide new motivations for future e þ e − and pp colliders. This also shows the importance of the vector-vector-scalar-and vector-scalar-scalar-type vertices in discovering CP-violation effects in the scalar sector.

show abstract

“…Using the present measured signal strengths in various Higgs search channels, theoretical studies on the Higgs CP properties have been performed, and constraints on the mixing angle of the CP -even and CP -odd component are given model dependently [17][18][19][20][21][22][23][24][25][26]. There are also investigations on how and to what extent to pin down the Higgs CP mixing angle via other Higgs decay channels at the LHC and future linear collider [27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Probing Higgs boson CP properties with tt̄H at the LHC and the 100 TeV pp collider

Zheng

2015

Int. J. Mod. Phys. A

View full text Add to dashboard Cite

The Higgs boson H has the largest coupling to the top quark t among the standard model (SM) fermions. This is one of the ideal places to investigate new physics beyond SM. In this work, we study the potential of determining Higgs boson CP properties at the LHC and future 33 TeV and 100 TeV pp colliders by analysing various operators formed from final states variables in ttH production. The discrimination power from SM coupling is obtained with Higgs boson reconstructed from H → γγ and H → bb. We find that ttbb process can provide more than 3σ discrimination power with 300 f b −1 integrated luminosity in a wide range of allowed Higgs to top couplings for the LHC, the 33 TeV and 100 TeV colliders. For ttγγ the discrimination power will be below 3σ at the LHC, while for 33 TeV and 100 TeV colliders, more than 3σ sensitivity can be reached.

show abstract

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

Cited by 70 publications

References 19 publications

ConstrainingCP-violating Higgs sectors at the LHC using gluon fusion

ConstrainingCP-violating Higgs sectors at the LHC using gluon fusion

Spontaneous CP -violation in the simplest little Higgs model and its future collider tests: The scalar sector

Probing Higgs boson CP properties with tt̄H at the LHC and the 100 TeV pp collider

Contact Info

Product

Resources

About