Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-08-09
Physics
High Energy Physics
High Energy Physics - Phenomenology
7 pages, 5 figures
Scientific paper
Complete electroweak two-loop corrections to the process $gg \to H$ are presented and discussed in a Standard Model with a fourth generation of heavy fermions. The latter is studied at the LHC to put exclusion limits on a fourth generation of heavy fermions. Therefore also a precise knowledge of the electroweak(EW) next-to-leading-order(NLO) corrections is important. The corrections due to the fourth generation are positive and large for a light Higgs boson, positive but relatively small around the $\bar{t}-t$ threshold and start to become negative for a Higgs boson mass around $M_H = 450 GeV$. Increasing further the value of the Higgs boson mass, the EW NLO effects tend to become huge and negative, ${\cal O}(-100%)$, around the heavy-fermion threshold, assumed at $1.2 TeV$, so that $gg$-fusion becomes non-perturbative. Above that threshold they start to grow again and become positive around $M_H= 1.75 TeV$. The behaviour at even larger values of $M_H$ shows a positive enhancement, ${\cal O}(+100%)$ at $M_H= 3 TeV$.
Passarino Giampiero
Sturm Christian
Uccirati Sandro
No associations
LandOfFree
Complete Electroweak Corrections to Higgs production in a Standard Model with four generations at the LHC does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Complete Electroweak Corrections to Higgs production in a Standard Model with four generations at the LHC, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Complete Electroweak Corrections to Higgs production in a Standard Model with four generations at the LHC will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-70845