Search for pair production of heavy objects in 4-jet events at root s=130-136 GeV

Journal article

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, hAor H+H-, using a data sample of 5.9 pb-1 of e+e- collisions at √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.

Authors: Adam, W; Adye, T; Agasi, E; Ajinenko, I; Alekseev, G

• Publication status: Published
• Journal: ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS
• Volume: 73
• Issue: 1
• Pages: 1-9
• Publication date: 1996-12-01
• DOI: 10.1007/s002880050294
• EISSN: 1431-5858
• ISSN: 0170-9739
• Language: English