Abstract
Results are presented of a search for pair production of heavy objects decaying into four hadronic jets, as expected for example from associated or pair production of MSSM Higgs bosons, hA or H+H−, using a data sample of 5.9pb−1 of e+e− collisions at $sqrt{s}=130-136 {⤪ GeV}$ collected with the DELPHI detector at LEP in November 1995. The data and expectations from standard processes agree after four-jet selections. An analysis based on b-tagging finds no hA candidate with high mass. A study optimized to search for H+H−events with mass in the 40–50 GeV/c2 range also finds no candidate. Finally a comparison is made with a recent ALEPH analysis which found an excess of four-jet events with high multiplicity and high mass. Such a signal is not observed in the DELPHI data, although a slight excess in the mass region around 105 GeV/c2 is seen.
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DELPHI Collaboration. Search for pair production of heavy objects in 4-jet events at} $sqrt{s}=130-136 {⤪ GeV}$ DELPHI Collaboration. Z Phys C - Particles and Fields 73, 1–9 (1997). https://doi.org/10.1007/s002880050294
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DOI: https://doi.org/10.1007/s002880050294