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Article overview
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$HZ$ associated production at the LHC within the littlest Higgs model at NLO+NLL accuracy | | Chen Liang-Wen
; Ma Wen-Gan
; Zhang Ren-You
; Li Xiao-Zhou
; Wang Yong
; | | Date: |
18 Oct 2016 | | Abstract: | We consider the $HZ$ associated production at the $14~{
m TeV}$ LHC in the
littlest Higgs model (LHM) and study the corrections of the transverse momentum
resummation and threshold resummation at the next-to-leading logarithmic (NLL)
accuracy and the fixed-order prediction at the QCD next-to-leading order (NLO)
including the contribution from the one-loop-induced $gg$-fusion channel. The
QCD NLO+NLL effects on the integrated cross section and the distributions of
transverse momentum and invariant mass of the $HZ$ system for the $HZ$
production in the LHM are discussed. The distributions of transverse momentum
and invariant mass of the $HZ$ system are evaluated by means of the transverse
momentum resummation and threshold resummation, respectively. We estimate their
scale uncertainties and find that the predictions obtained at the QCD NLO+NLL
accuracy are much more reliable than those using the pure NLO approach. We see
also that the relative deviation between the results in the LHM and the
standard model is considerably reduced by the resummation effects, but still
observable. | | Source: | arXiv, 1610.5476 | | Services: | Forum | Review | PDF | Favorites | |
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