On the possibility to detect the Higgs decay H→bb¯ in the associated Z+bb¯ production at the LHC

We investigate the possibility to detect the scalar Higgs boson decay H→bb¯ in the associated Z and bb¯ production at the LHC using the kT -factorization QCD approach. Our consideration is based on the off-shell (i.e. depending on the transverse momenta of initial quarks and gluons) production amplitudes of q∗q¯∗→ZH→Zq′q¯′ , q∗q¯∗→Zq′q¯′ , and g∗g∗→Zq′q¯′ partonic subprocesses supplemented with the Catani–Ciafoloni–Fiorani–Marchesini (CCFM) dynamics of parton densities in a proton. We argue that the H→bb¯ signal could be observed at large transverse momenta near the Higgs boson peak despite the overwhelming QCD background, and we point out the important role of angular correlations between the produced Z boson and b -quarks