Electroweak radiative corrections toe + e ??HZ

Denner, Ansgar; Küblbeck, J.; Mertig, R.; Böhm, M.

doi:10.1007/bf01555523

Cited by 94 publications

(121 citation statements)

References 16 publications

Supporting

Mentioning

118

Contrasting

Order By: Relevance

“…So the electroweak radiative corrections should be taken into account in the theoretical calculations of the production rate. For the process e + e − → ZH, the leading order calculation was performed in [21] and the oneloop electroweak corrections were calculated with the soft-photon approximation in [22][23][24] (a compact analytical formula for the electromagnetic corrections was given in [23] and a numerical calculation algorithm for the real photon emission was proposed in [25]). …”

Section: Introductionmentioning

confidence: 99%

Full one-loop electroweak corrections to e + e − → ZHγ at a Higgs factory

Liu

Ren

et al. 2014

J. High Energ. Phys.

View full text Add to dashboard Cite

Motivated by the future precision test of the Higgs boson at an e + e − Higgs factory, we calculate the production e + e − → ZHγ in the Standard Model with complete next-to-leading order electroweak corrections. We find that for √ s = 240 (350) GeV the cross section of this production is sizably reduced by the electroweak corrections, which is 1.03 (5.32) fb at leading order and 0.72 (4.79) fb at next-to-leading order. The transverse momentum distribution of the photon in the final states is also presented.

show abstract

Section: Introductionmentioning

confidence: 99%

Full one-loop electroweak corrections to e + e − → ZHγ at a Higgs factory

Liu

Ren

et al. 2014

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

“…more than sixty diagrams need to be calculated) and it was shown recently that the total weak correction is 5% for m h = 125GeV and √ s = 240GeV [75]. About the corresponding corrections in the MDM, we have following observations after comparing carefully the SM correction presented in [73] • Although the contribution induced by the Higgs self-coupling is only 2% in the SM [75], it is potentially large in the MDM since the self-couplings among the scalars may be greatly enhanced [44]. In this work, we call such a contribution Type-I correction and will mainly discuss its effect on the production process in the following.…”

Section: Calculations and Numerical Resultsmentioning

confidence: 84%

“…Explicitly speaking, we find by calculation that, in the G µ parametrization discussed in [73], the size of the correction is only about 0.35% in optimal case, which occurs for m t ′ ≃ 1010GeV, sin θ L ≃ 0.24 (corresponding to y ′ ≃ 1.37) and cos θ S ≃ 1. In getting the correction, we compute not only the vertex correction to ZZh interaction with the Feynman diagram shown in panel (i) of figure 2, but also the self energies of SM gauge bosons and the Higgs boson to get the expressions of the counter terms, which are needed to renormalize the ZZh interaction [73]. Therefore the calculation process is rather complicated.…”

Section: Jhep08(2014)138mentioning

confidence: 80%

Higgs-strahlung production process e + e − → Zh at the future Higgs factory in the Minimal Dilaton Model

Cao

Heng

et al. 2014

J. High Energ. Phys.

View full text Add to dashboard Cite

Abstract:We investigate the Higgs-strahlung production process e + e − → Zh at the future Higgs factory such as TLEP by including radiative corrections in the Minimal Dilaton Model (MDM), which extends the SM by one singlet scalar called dilaton. We consider various theoretical and experimental constraints on the model, and perform fits to the Higgs data taken from ATLAS, CMS and CDF+D0. Then for the 1σ surviving samples, we calculate the MDM predictions on the inclusive production rate σ(e + e − → Zh) at the 240-GeV Higgs factory, and also the signal rates of e + e − → Zh with the Higgs boson decaying to bb and γγ. We have following observations: (1) In the heavy dilaton scenario, the deviation of σ(e + e − → Zh) from its SM prediction can vary from −15% to 85%, which mainly arises from the modification of the tree-level hZZ coupling and also the radiative correction induced by possibly large Higgs self-couplings. (2) The processes e + e − → Zh at the Higgs factory and pp → hh at 14-TeV LHC are complementary in limiting the MDM parameter space. Requiring the deviation of σ(e + e − → Zh) from its SM prediction to be less than 1% and that of σ(pp → hh) to be less than 50%, tan θ S in the MDM will be limited to be −0.1 < tan θ S < 0.3, and the deviations of the signal rates are constrained to be |R bb | < 2% and |R γγ | < 7%. Especially, the Higgs self-coupling normalized to its SM prediction is now upper bounded by about 4. (3) In the light dilaton scenario, the deviation of σ(e + e − → Zh) may reach −7%, and requiring its size to be less than 1% will result in 0 < tan θ S < 0.1, and −10% < R bb , R γγ < 1%.

show abstract

“…The corresponding one-loop amplitudes arise from ZZ and γZ self-energies and counter terms generating renormalized initial and final vertices, triangles (initial and final in schannel, and up and down in t and u channels), direct, crossed and twisted boxes and specific diagrams involving 4-leg bosonic couplings, see [10]. In the MSSM case additional diagrams exist involving supersymmetric partners like sleptons, squarks, charginos, neutralinos and additional Higgses.…”

Section: Electroweak Corrections At One Loopmentioning

confidence: 99%

“…This process has been considered as the most important one for studying the Higgs boson at e − e + colliders [10]. As we point out below, there are several points that may be added to the previous analyses of this process, even in the SM case [10].…”

Section: Introductionmentioning

confidence: 97%

Supersimple analysis ofe−e+→ZHat high energy

Gounaris

Renard

2014

Phys. Rev. D

View full text Add to dashboard Cite

We study the process e − e + → ZH where H represents the standard model (SM) Higgs particle H SM , or the MSSM ones h 0 and H 0 . In each case, we compute the one-loop effects and establish very simple expressions, called supersimple (sim), for the helicity conserving (dominant) and the helicity violating (suppressed) amplitudes. Such expressions, are then used to construct various cross sections and asymmetries, involving polarized or unpolarized beams and Z-polarization measurements. We examine the adequacy of such expressions to distinguish SM from MSSM effects or from other types of BSM (beyond the standard model) contributions.

show abstract

Electroweak radiative corrections toe + e ??HZ

Cited by 94 publications

References 16 publications

Full one-loop electroweak corrections to e + e − → ZHγ at a Higgs factory

Full one-loop electroweak corrections to e + e − → ZHγ at a Higgs factory

Higgs-strahlung production process e + e − → Zh at the future Higgs factory in the Minimal Dilaton Model

Supersimple analysis ofe−e+→ZHat high energy

Contact Info

Product

Resources

About