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@ARTICLE{Arco:602032,
      author       = {Arco, F. and Heinemeyer, S. and Mühlleitner, M. and
                      Radchenko, K.},
      title        = {{S}ensitivity to triple {H}iggs couplings via di-{H}iggs
                      production in the 2{HDM} at the ({HL}-){LHC}},
      journal      = {The European physical journal / C},
      volume       = {83},
      number       = {11},
      issn         = {1434-6044},
      address      = {Heidelberg},
      publisher    = {Springer},
      reportid     = {PUBDB-2024-00480, arXiv:2212.11242. DESY-22-203.
                      IFT-UAM/CSIC-22-073. KA-TP-30-2022},
      pages        = {1019},
      year         = {2023},
      note         = {43 pages, 26 figures},
      abstract     = {An important task of the LHC is the investigation of the
                      Higgs-boson sector. Of particular interest is the
                      reconstruction of the Higgs potential, i.e. the measurement
                      of the Higgs self-couplings. Based on previous analyses,
                      within the 2-Higgs-Doublet Model (2HDM) type I, we analyze
                      several two-dimensional benchmark planes that are over large
                      parts in agreement with all theoretical and experimental
                      constraints. For these planes we evaluate di-Higgs
                      production cross sections at the (HL-)LHC with a
                      center-of-mass energy of $14 \,\, \textrm{TeV}$ at
                      next-to-leading order in the heavy top-quark limit with the
                      code HPAIR. We investigate in particular the process $gg
                      \rightarrow hh$, with h being the Higgs boson discovered at
                      the LHC with a mass of about $125 \,\, \textrm{GeV}$. The
                      top box diagram of the loop-mediated gluon fusion process
                      into Higgs pairs interferes with the s-channel exchange of
                      the two ${\mathcal{C}\mathcal{P}}$-even 2HDM Higgs bosons h
                      and H. The latter two involve the triple Higgs couplings
                      (THCs) $\lambda _{hhh}$ and $\lambda _{hhH}$, respectively,
                      possibly making them accessible at the HL-LHC. Depending on
                      the size of the involved top-Yukawa and THCs as well as on
                      the mass of H, the contribution of the s-channel H diagram
                      can be dominating or be highly suppressed. We find regions
                      of the allowed parameter space in which the di-Higgs
                      production cross section can differ by many standard
                      deviations from its SM prediction, indicating possible
                      access to deviations in $\lambda _{hhh}$ from the SM value
                      $\lambda _{\textrm{SM}}$ and/or contributions involving
                      $\lambda _{hhH}$. The sensitivity to the beyond-the-SM (BSM)
                      THC $\lambda _{hhH}$ is further analyzed employing the
                      $m_{hh}$ distributions. We demonstrate how a possible
                      measurement of $\lambda _{hhH}$ depends on the various
                      experimental uncertainties. Depending on the underlying
                      parameter space, the HL-LHC may have the option not only to
                      detect BSM THCs, but also to provide a first rough
                      measurement of their sizes.},
      keywords     = {Higgs particle: doublet: 2 (INSPIRE) / potential: Higgs
                      (INSPIRE) / coupling: Higgs (INSPIRE) / top: coupling
                      (INSPIRE) / Higgs particle: pair production (INSPIRE) /
                      gluon: fusion (INSPIRE) / sensitivity (INSPIRE) / CERN LHC
                      Coll: upgrade (INSPIRE) / numerical calculations (INSPIRE) /
                      new physics (INSPIRE)},
      cin          = {T},
      ddc          = {530},
      cid          = {I:(DE-H253)T-20120731},
      pnm          = {611 - Fundamental Particles and Forces (POF4-611) / DFG
                      project G:(GEPRIS)390833306 - EXC 2121: Quantum Universe
                      (390833306) / HIDDeN - Hunting Invisibles: Dark sectors,
                      Dark matter and Neutrinos (860881)},
      pid          = {G:(DE-HGF)POF4-611 / G:(GEPRIS)390833306 /
                      G:(EU-Grant)860881},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)16},
      eprint       = {2212.11242},
      howpublished = {arXiv:2212.11242},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2212.11242;\%\%$},
      UT           = {WOS:001100008300001},
      doi          = {10.1140/epjc/s10052-023-12193-4},
      url          = {https://bib-pubdb1.desy.de/record/602032},
}