Search for new Higgs bosons via same-sign top quark pair production in association with a jet in proton-proton collisions at $\sqrt{s}$ = 13 TeV

The CMS collaboration
CMS-TOP-22-010, 2023.

Abstract
A search is presented for new Higgs bosons in proton-proton (pp) collision events in which a same-sign top quark pair is produced in association with a jet, via the pp $\to$ tH/A $\to$ t$\mathrm{\bar{t}}$c and pp $\to$ tH/A $\to$ t$\mathrm{\bar{t}}$u processes. Here, H and A represent the extra scalar and pseudoscalar boson, respectively, of the second Higgs doublet in the generalized two-Higgs-doublet model (g2HDM). The search is based on pp collision data collected at a center-of-mass energy of 13 TeV with the CMS detector at the LHC, corresponding to an integrated luminosity of 138 fb$^{-1}$. Final states with a same-sign lepton pair in association with jets and missing transverse momentum are considered. New Higgs bosons in the 200-1000 GeV mass range and new Yukawa couplings between 0.1 and 1.0 are targeted in the search, for scenarios in which either H or A appear alone, or in which they coexist and interfere. No significant excess above the standard model prediction is observed. Exclusion limits are derived in the context of the g2HDM.

  • Figure 2a

    Example location

    10.17182/hepdata.140528.v1/t1

    Pre-fit distributon for leading jet's CvsL variable.

  • Figure 2b

    Example location

    10.17182/hepdata.140528.v1/t2

    Pre-fit distributon for leading jet's CvsB variable.

  • Figure 3a

    Example location

    10.17182/hepdata.140528.v1/t3

    Post-fit distributon of BDT discriminants for $\rho_{tu}=1.0$ with $m_A$ = 350 GeV interfered with H.($m_A - m_H$ = 50 GeV)

  • Figure 3b

    Example location

    10.17182/hepdata.140528.v1/t4

    Post-fit distributon of BDT discriminants for $\rho_{tc}=1.0$ with $m_A$ = 350 GeV interfered with H.($m_A - m_H$ = 50 GeV)

  • Figure 4a

    Example location

    10.17182/hepdata.140528.v1/t5

    Observed and expected 95% CL upper limit on the signal strength as a function of $m_A$ for the g2HDM signal...

  • Figure 4b

    Example location

    10.17182/hepdata.140528.v1/t6

    Observed and expected 95% CL upper limit on the signal strength as a function of $m_A$ for the g2HDM signal...

  • Figure 5a

    Example location

    10.17182/hepdata.140528.v1/t7

    Observed and expected 95% CL upper limit on the signal strength as a function of $m_A$ for the g2HDM signal...

  • Figure 5b

    Example location

    10.17182/hepdata.140528.v1/t8

    Observed and expected 95% CL upper limit on the signal strength as a function of $m_A$ for the g2HDM signal...

  • Figure 6a

    Example location

    10.17182/hepdata.140528.v1/t9

    Observed 95% CL upper limit on the signal strength as a function of $m_A$ and $\rho_{tu}$ for the g2HDM signal...

  • Figure 6a(expected exclusion)

    Example location

    10.17182/hepdata.140528.v1/t10

    Expected exclusion as a function of $m_A$ and $\rho_{tu}$ for the g2HDM signal model

  • Figure 6a(observed exclusion)

    Example location

    10.17182/hepdata.140528.v1/t11

    Observed exclusion as a function of $m_A$ and $\rho_{tu}$ for the g2HDM signal model

  • Figure 6b

    Example location

    10.17182/hepdata.140528.v1/t12

    Observed 95% CL upper limit on the signal strength as a function of $m_A$ and $\rho_{tc}$ for the g2HDM signal...

  • Figure 6b(expected exclusion)

    Example location

    10.17182/hepdata.140528.v1/t13

    Expected exclusion as a function of $m_A$ and $\rho_{tc}$ for the g2HDM signal model

  • Figure 6b(observed exclusion)

    Example location

    10.17182/hepdata.140528.v1/t14

    Observed exclusion as a function of $m_A$ and $\rho_{tc}$ for the g2HDM signal model

  • Figure 7a

    Example location

    10.17182/hepdata.140528.v1/t15

    Observed 95% CL upper limit on the signal strength as a function of $m_A$ and $\rho_{tu}$ for the g2HDM signal...

  • Figure 7a(expected exclusion)

    Example location

    10.17182/hepdata.140528.v1/t16

    Expected exclusion as a function of $m_A$ and $\rho_{tu}$ for the g2HDM signal model with A–H interference assuming $m_A$ −...

  • Figure 7a(observed exclusion)

    Example location

    10.17182/hepdata.140528.v1/t17

    Observed exclusion as a function of $m_A$ and $\rho_{tu}$ for the g2HDM signal model with A–H interference assuming $m_A$ −...

  • Figure 7b

    Example location

    10.17182/hepdata.140528.v1/t18

    Observed 95% CL upper limit on the signal strength as a function of $m_A$ and $\rho_{tc}$ for the g2HDM signal...

  • Figure 7b(expected exclusion)

    Example location

    10.17182/hepdata.140528.v1/t19

    Expected exclusion as a function of $m_A$ and $\rho_{tc}$ for the g2HDM signal model with A–H interference assuming $m_A$ −...

  • Figure 7b(observed exclusion)

    Example location

    10.17182/hepdata.140528.v1/t20

    Observed exclusion as a function of $m_A$ and $\rho_{tc}$ for the g2HDM signal model with A–H interference assuming $m_A$ −...

Loading Data...

Ask a Question


Your question will be emailed to those involved with the submission. Please mention the relevant table.


Please log in to HEPData to send a question.