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Precise QCD predictions on $W_HZ_H$ production in the Littlest Higgs Model with T parity at LHC | | Liu Wen
; Zhang Ren-You
; Guo Lei
; Ma Wen-Gan
; Chen Liang-Wen
; | | Date: |
1 Feb 2013 | | Abstract: | We investigate the effects of the littlest Higgs model with $T$ parity up to
the QCD next-to-leading order (NLO) on the $W_H^{pm} Z_H$ productions at the
CERN Large Hadron Collider (LHC), and discuss the kinematic distributions of
final decay products and the theoretical dependence of the cross section on the
factorization/renormalization scale. We find the QCD NLO corrections reduce the
scale uncertainty of the leading order cross section in case of $mu_F=mu_R$.
By adopting the PROSPINO subtraction scheme (scheme (II)) in analysing the QCD
NLO contributions, we can obtain the numerical results which keep the
convergence of the perturbative QCD description. Our results by adopting scheme
(II) at the $14 {
m TeV}$ ($8 {
m TeV}$) LHC show that the $K$-factor for the
$W_H^+ Z_H$ production varies in the range of $1.01 sim 1.10$ ($1.00 sim
1.08$), while the $K$-factor for the $W_H^- Z_H$ production varies in the range
of $1.11 sim 1.13$ ($1.11 sim 1.12$), when the global symmetry breaking scale
$f$ goes from $400 {
m GeV}$ to $1.5 {
m TeV}$ ($1 {
m TeV}$). | | Source: | arXiv, 1302.0052 | | Services: | Forum | Review | PDF | Favorites | |
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