Impact of QED corrections to Higgs decay into four leptons at the LHC
نویسنده
چکیده
At the LHC a precise measurement of the Higgs boson mass (if discovered), at the level of 0.1-1%, will be possible through the channel gg → H → 4l for a wide range of Higgs mass values. To match such an accuracy, the systematic effects induced by QED corrections need to be investigated. In the present study the calculation of O(α) and higher order QED corrections is illustrated as well as their impact on the Higgs mass determination, once realistic event selection criteria for charged leptons and photons are considered.
منابع مشابه
QED corrections to Higgs boson decay into four leptons at the LHC
At the LHC a precise measurement of the Higgs boson mass (if discovered), at the level of 0.11%, will be possible through the channel gg → H → 4l for a wide range of Higgs mass values. To match such an accuracy, the systematic effects induced by QED corrections need to be investigated. In the present study the calculation of O(α) and higher order QED corrections is illustrated as well as their ...
متن کاملقیدهای تک Z روی مدل ماده تاریک فرمیونی با واسطه شبه اسکالر در LHC
In this research we study the Mono-Z signature along with dark matter production at the LHC in a renormalizable dark matter model. We look at processes with L+L-+MET in the final state. We simulate signal and background events at central mass energy 14 TeV We then evaluate the LHC sensitivities for some points in the model parameter space for two integrated luminosities L=100 fb-1 and L=1 ab-1 ...
متن کاملStrangephilic Higgs Bosons in the MSSM
We suggest a new CPX-derived scenario for the search of strangephilic MSSM Higgs bosons at the Tevatron and the LHC, in which all neutral and charged Higgs bosons decay predominantly into pairs of strange quarks and into a strange and a charm quark, respectively. The proposed scenario is realized within a particular region of the MSSM parameter space and requires large values of tanβ, where thr...
متن کاملHIGLU and HDECAY: Programs for Higgs Boson Production at the LHC and Higgs Boson Decay Widths
The total cross section for Higgs boson production via the dominant gluon fusion mechanism including NLO [two-loop] QCD corrections can be calculated numerically with the program HIGLU. The QCD corrections are included for arbitrary Higgs and quark masses and increase the cross section at the LHC by up to a factor of 2. The source code HIGLU provides the evaluation of the production of the Stan...
متن کاملExtracting MSSM Masses From Heavy Higgs Decays to Four Leptons at the LHC
It is well known that finding and measuring the masses of particles in the Minimal Supersymmetric Standard Model (MSSM) at the Large Hadron Collider (LHC) may be possible using invariant mass distributions in exclusive channels containing nj jets and nl leptons. We perform this analysis for the (nj, nl) = (0, 4) decay of heavy Higgs bosons to neutralinos, pp → H/A → χ̃i χ̃j (i, j = 2, 3, 4), whic...
متن کامل