Next-to-leading order QCD corrections to $HZ{W}^{\pm }$ production at 14 TeV LHC

Abstract

Since the precise study of Higgs gauge couplings is important to test the Standard Model (SM), we calculate the complete next-to-leading order QCD(NLO QCD) correction to the $pp\to HZ{W}^{\pm }$ production in the SM at 14 TeV LHC. Our results show that the NLO QCD correction can enhance the leading-order cross section of $pp\to HZ{W}^{\pm }$ by 45%, when $m_H$ = 125.3 GeV. We also study the dependence of the LO and NLO corrected cross sections on the renormalization and factorization scale $\mu$. Besides, due to the unbalance of parton distribution functions, we investigate the charge asymmetry of $W^{\pm }$ in the production of $pp\to HZ{W}^{\pm }$, which can reach 32.94% for $\mu =(m_H+m_Z+m_W)/2$ at 14 TeV LHC.

Comments: discussions added, accepted by Physics Letters B