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Journal ArticleDOI

Prospects for observing an additional NMSSM Higgs boson produced in association with a single bottom quark at the LHC

M.M. Almarashi1
01 Oct 2021-Results in physics (Elsevier)-Vol. 29, pp 104711
TL;DR: In this article, the authors studied the production of the next-to-lightest CP-even Higgs state, which is not the SM-like Higgs, in association with a single bottom quark b g → b h 2 in the ditau decay channel at the LHC.
Abstract: We study the production of the next-to-lightest CP-even Higgs state, which is not the SM-like Higgs, of the NMSSM in association with a single bottom quark b g → b h 2 in the ditau decay channel at the LHC. We find that this production channel can be exploited to extract such a Higgs boson at the LHC with an integrated luminosity of 3000 fb−1. The presence of a single bottom quark in the final state with a high transverse momentum is useful to suppress the backgrounds to a manageable level.
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TL;DR: In this article, the degenerate heavy Higgs bosons in the NMSSM were investigated from a top-down view and the null results of searching for high mass resonances have tightly constrained the parameter space.
Abstract: In this work, we investigate the degenerate heavy Higgs bosons in the Next-to-Minimal Supersymmetric Standard Model (NMSSM) by introducing vector-like particles. Such an extension is well motivated from the top-down view since some grand unified theories usually predict the existence of singlet scalars and vector-like particles at weak scale. Under the constraints from the LHC and dark matter experiments, we find that (1) the null results of searching for high mass resonances have tightly constrained the parameter space; (2) two degenerate heavy singlet Higgs bosons $h_2$ and $a_1$ can sizably decay to $\chi^0_1\chi^0_1$ invisibly. Therefore, search for the monojet events through the process $gg \to h_2 / a_1 (\to \chi^0_1 \chi^0_1) j$ may further test our scenario at the future LHC.

4 citations

References
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Journal ArticleDOI
Georges Aad1, T. Abajyan2, Brad Abbott3, Jalal Abdallah4  +2964 moreInstitutions (200)
TL;DR: In this article, a search for the Standard Model Higgs boson in proton-proton collisions with the ATLAS detector at the LHC is presented, which has a significance of 5.9 standard deviations, corresponding to a background fluctuation probability of 1.7×10−9.

9,282 citations

Journal ArticleDOI
TL;DR: In this paper, results from searches for the standard model Higgs boson in proton-proton collisions at 7 and 8 TeV in the CMS experiment at the LHC, using data samples corresponding to integrated luminosities of up to 5.8 standard deviations.

8,857 citations

Journal ArticleDOI
TL;DR: In this paper, the authors give an explanation of the conservation of strong interactions which includes the effects of pseudoparticles, and they find it is a natural result for any theory where at least one flavor of fermion acquires its mass through a Yukawa coupling to a scalar field which has nonvanishing vacuum expectation value.
Abstract: We give an explanation of the $\mathrm{CP}$ conservation of strong interactions which includes the effects of pseudoparticles. We find it is a natural result for any theory where at least one flavor of fermion acquires its mass through a Yukawa coupling to a scalar field which has nonvanishing vacuum expectation value.

5,545 citations

Journal ArticleDOI
TL;DR: In this article, it was shown that strong CP conservation remains a natural symmetry if the full Lagrangian possesses a chiral U(1)-invariant invariance, which is the case for weak CP conservation.
Abstract: We elaborate on an earlier discussion of CP conservation of strong interactions which includes the effect of pseudoparticles. We discuss what happens in theories of the quantum-chromodynamics type when we include weak and electromagnetic interactions. We find that strong CP conservation remains a natural symmetry if the full Lagrangian possesses a chiral U(1) invariance. We illustrate our results by considering in detail a recent model of (weak) CP nonconservation.

2,381 citations

Journal ArticleDOI
TL;DR: The new features of CalcHEP 3.4 are reported on which improves the power of the package to be an effective tool for the study of modern collider phenomenology.

1,036 citations