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Search for a pseudoscalar boson decaying into a Z boson and the 125 GeV Higgs boson in $ℓ^+ℓ^−b\overline{b}$ final states

The CMS collaboration
Phys.Lett. B748 (2015) 221-243, 2015

Abstract (data abstract)
CERN-LHC. Results are reported on a search for decays of a pseudoscalar A boson into a Z boson and a light scalar h boson, where the Z boson decays into a pair of oppositely-charged electrons or muons, and the h boson decays into b anti-b. The search is based on data from proton-proton collisions at a center-of-mass energy sqrt(s)=8 TeV collected with the CMS detector, corresponding to an integrated luminosity of 19.7 inverse femtobarns. The h boson is assumed to be the recently discovered standard model-like Higgs boson with a mass of 125 GeV. With no evidence for signal, upper limits are obtained on the product of the production cross section and the branching fraction of the A boson in the Zh channel. Results are also interpreted in the context of two Higgs doublet models.

  • Table 1

    Data from Page 9 of preprint

    10.17182/hepdata.70527.v1/t1

    Observed and expected 95% CL upper limits on sigma A x B(A->Zh->llbb) as a function of mA in the narrow-width...

  • Table 2

    Data from Page 10 of preprint (Fig. 4)

    10.17182/hepdata.70527.v1/t2

    Observed 95% CL upper limits on sigma A x B(A->Zh->llbb) as a function of mA and the A natural width...

  • Table 3

    Data from Page 10 of preprint (Fig. 4)

    10.17182/hepdata.70527.v1/t3

    Expected 95% CL upper limits on sigma A x B(A->Zh->llbb) as a function of mA and the A natural width...

  • Table 4

    Data from Page 4 of preprint

    10.17182/hepdata.70527.v1/t4

    Signal selection efficiency as a function of mA.

  • Table 5

    Data from Page 10 of preprint (Fig. 5)

    10.17182/hepdata.70527.v1/t5

    Expected +2 sigma uncertainty band exclusion limit for Type-I models, as a function of tan beta and cos(beta-alpha).

  • Table 6

    Data from Page 10 of preprint (Fig. 5)

    10.17182/hepdata.70527.v1/t6

    Expected +1 sigma uncertainty band exclusion limit for Type-I models, as a function of tan beta and cos(beta-alpha).

  • Table 7

    Data from Page 10 of preprint (Fig. 5)

    10.17182/hepdata.70527.v1/t7

    Expected exclusion limit for Type-I models, as a function of tan beta and cos(beta-alpha).

  • Table 8

    Data from Page 10 of preprint (Fig. 5)

    10.17182/hepdata.70527.v1/t8

    Expected -1 sigma uncertainty band exclusion limit for Type-I models, as a function of tan beta and cos(beta-alpha).

  • Table 9

    Data from Page 10 of preprint (Fig. 5)

    10.17182/hepdata.70527.v1/t9

    Expected -2 sigma uncertainty band exclusion limit for Type-I models, as a function of tan beta and cos(beta-alpha).

  • Table 10

    Data from Page 10 of preprint (Fig. 5)

    10.17182/hepdata.70527.v1/t10

    Observed exclusion limit for Type-I models, as a function of tan beta and cos(beta-alpha).

  • Table 11

    Data from Page 10 of preprint (Fig. 5)

    10.17182/hepdata.70527.v1/t11

    Expected +2 sigma uncertainty band exclusion limit for Type-II models, as a function of tan beta and cos(beta-alpha).

  • Table 12

    Data from Page 10 of preprint (Fig. 5)

    10.17182/hepdata.70527.v1/t12

    Expected +1 sigma uncertainty band exclusion limit for Type-II models, as a function of tan beta and cos(beta-alpha).

  • Table 13

    Data from Page 10 of preprint (Fig. 5)

    10.17182/hepdata.70527.v1/t13

    Expected exclusion limit for Type-II models, as a function of tan beta and cos(beta-alpha).

  • Table 14

    Data from Page 10 of preprint (Fig. 5)

    10.17182/hepdata.70527.v1/t14

    Expected -1 sigma uncertainty band exclusion limit for Type-II models, as a function of tan beta and cos(beta-alpha).

  • Table 15

    Data from Page 10 of preprint (Fig. 5)

    10.17182/hepdata.70527.v1/t15

    Expected -2 sigma uncertainty band exclusion limit for Type-II models, as a function of tan beta and cos(beta-alpha).

  • Table 16

    Data from Page 10 of preprint (Fig. 5)

    10.17182/hepdata.70527.v1/t16

    Observed exclusion limit for Type-II models, as a function of tan beta and cos(beta-alpha).

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