Review of a light NMSSM pseudoscalar Higgs state production at the LHC

Abstract

In this paper we briefly review the LHC discovery potential of a light pseudoscalar Higgs boson of the NMSSM, $a_1$, produced in the gluon fusion $gg\to a_1$ , bottom-quark fusion $b\bar{b}\to a_1$ and bottom-gluon fusion $bg\to b{a}_1$. We also review the LHC discovery potential of the next-to-lightest CP-even Higgs boson $h_2$ being the non-SM-like Higgs, decaying either into two light CP-odd Higgs bosons $a_1{a}_1$ or into a light $a_1$ and the $Z$ gauge boson through the gluon fusion $gg\to h_2$ in the 4$\tau$ final state. We find that the light $a_1$ can be detected at the LHC in a variety of production processes including the gluon fusion, bottom-quark fusion and bottom-gluon fusion. The latter two processes require high luminosity of the LHC and large values of tan$\beta$. We also find that the LHC has the potential to discover the non-SM-like Higgs state, $h_2$, decaying into a pair of light CP-odd Higgses $a_1$'s, allowing to distinguish the NMSSM Higgs sector from the MSSM one as such a light $a_1$ is impossible in the latter scenario.

10 figures, 3 tables

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