Measurement and interpretation of fermion-pair production at LEP energies from 130 to 172 GeV | Zendy

P. Abreu et al. | Zendy

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Measurement and interpretation of fermion-pair production at LEP energies from 130 to 172 GeV

Author(s) -

P. Abreu et al.

Publication year - 1999

Publication title -

the european physical journal c

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.938

H-Index - 198

eISSN - 1434-6052

pISSN - 1434-6044

DOI - 10.1007/s100520050643

Subject(s) - physics , particle physics , hadron , boson , nuclear physics , fermion , standard model (mathematical formulation) , quark , parity (physics) , electron–positron annihilation , resonance (particle physics) , asymmetry , production (economics) , archaeology , gauge (firearms) , history , macroeconomics , economics

. The data collected with the DELPHI detector at centre-of-mass energies between 130 and 172 GeV, during LEP operation in 1995 and 1996, have been used to determine the hadronic and leptonic cross-sections and leptonic forward–backward asymmetries. In addition, the cross-section ratios and forward–backward asymmetries for flavour-tagged samples of light (uds), c and b quarks have been measured. No significant deviations from the Standard Model expectations are found. The results are interpreted by performing S-matrix fits to these data and to the data collected previously at the energies near the resonance peak (88-93 GeV). The results are also interpreted in terms of physics beyond the Standard Model: contact interactions, R-parity violating SUSY particle exchange and of possible Z bosons.

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