Abstract
We compute the threshold-resummed cross section for pseudo-scalar MSSM Higgs boson production by gluon fusion at hadron colliders. The calculation is performed at next-to-next-to leading logarithmic accuracy. We present results for both the LHC and Tevatron Run II. We analyze the factorization and renormalization scale dependence of the results, finding that after performing the resummation the corresponding cross section can be computed with an accuracy better than 10%.
Highlights
The hunt for the Standard Model (SM) Higgs boson is clearly one of the biggest physics goals at the LHC
We have developed the program THIGRES, a FORTRAN code to compute the resummed cross section up to next-to-next-to-leading logarithmic (NNLL) (NNLO) accuracy, both for scalar and pseudoscalar Higgs boson in the heavy Mt limit
The improvement over previous calculations lies in the fact that the partonic cross sections up to next-to-next-to-leading order (NNLO) are directly written in Mellin space
Summary
The hunt for the Standard Model (SM) Higgs boson is clearly one of the biggest physics goals at the LHC. The soft-gluon resummation, which includes in the cross section the dominant effects of the higher order terms of the perturbative QCD series, was performed only for the scalar Higgs, up to next-to-next-to-leading logarithmic (NNLL) accuracy [17]. These corrections showed a modest numerical impact, and a further (slight) reduction of the scale dependence, providing a hint on the convergence of the asymptotic QCD perturbative series.
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