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Precision measurements of the neutral current from hadron and lepton production at LEP

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Zeitschrift für Physik C Particles and Fields

Abstract

New measurements of the hadronic and leptonic cross sections and of the leptonic forward-backward asymmetries ine + e collisions are presented. The analysis includes data recorded up to the end of 1991 by the OPAL experiment at LEP, with centre-of-mass energies within ±3 GeV of the Z0 mass. The results are based on a recorded total of 454 000 hadronic and 58 000 leptonic events. A model independent analysis of Z0 parameters based on an extension of the improved Born approximation is presented leading to test of lepton universality and an interpretation of the results within the Standard Model framework. The determination of the mass and width of the Z0 benefit from an improved understanding of the LEP energy calibration.

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References

  1. OPAL Coll., G. Alexander et al.: Z. Phys. C52 (1991) 175

    Google Scholar 

  2. L. Arnaudon et al.: CERN-PPE/92-125; CERN-SL/92-37 (DI)

  3. OPAL Coll., K. Ahmet et al.: Nucl. Instrum. Methods A305 (1991) 275

    Google Scholar 

  4. T. Sjöstrand: Comput. Phys. Commun. 39 (1986) 347; JETSET, Version 7.2

    Google Scholar 

  5. G. Marchesini, B.R. Webber: Nucl. Phys. B310 (1988) 461

    Google Scholar 

  6. OPAL Coll., M.Z. Akrawy et al.: Z. Phys. C47 (1990) 505

    Google Scholar 

  7. S. Jadach et al.: Comput. Phys. Commun. 66 (1991) 276

    Google Scholar 

  8. M. Böhm, A. Denner, W. Hollik: Nucl. Phys. B304 (1988) 687; F.A. Berends, R. Kleiss, W. Hollik: Nucl. Phys. B304 (1988) 712

    Google Scholar 

  9. S. Jadach et al.: Comput. Phys. Commun. 70 (1992) 305

    Google Scholar 

  10. J. Allison et al.: Nucl. Instrum. Methods A317 (1992) 47

    Google Scholar 

  11. B.E. Anderson et al.: Nucl. Instrum. Methods A283 (1989) 650; D.C. Imrie et al.: Nucl. Instrum. Methods A283 (1989) 515

    Google Scholar 

  12. M. Arignon et al.: Nucl. Instrum. Methods A313 (1992) 103

    Google Scholar 

  13. F.A. Berends, R. Kleiss: Nucl. Phys. B186 (1981) 22

    Google Scholar 

  14. S. Jadach: Private communication

  15. M. Caffo, H. Czyz, E. Remiddi: Nuovo Cimento 105 A (1992) 277

    Google Scholar 

  16. W. Beenakker, B. Pietrzyk: Phys. Lett. B296 (1992) 244

    Google Scholar 

  17. D. Charlton et al.: Nucl. Instrum. Methods A325 (1993) 129

    Google Scholar 

  18. Line shape program ZFITTER, version 451, including an implementation ofe + e →4 fermions Dubna-Zeuthen radiative correction group, D. Bardin et al.: Comput. Phys. Commun. 59 (1990) 303; Z. Phys. C44 (1989) 493; Nucl. Phys. B351 (1991) 1; Phys. Lett. B229 (1989) 405; CERN-TH 6443/92 (1992)

    Google Scholar 

  19. W. Beenakker et al.:, Nucl. Phys. B349 (1991) 323

    Google Scholar 

  20. M. Consoli, W. Hollik. Z. Physics at LEP 1, CERN89-08, G. Altarelli et al. (eds.), Vol. 1 (1989) 7

  21. A. Borelli et al.: Nucl. Phys. B333 (1990) 357; R. Stuart: Phys. Lett. B262 (1991) 113; Phys. Lett. B272 (1991) 353; CERN-TH.6261/91 (1991); A. Leike, T. Riemann, J. Rose: Phys. Lett. B273 (1991) 513

    Google Scholar 

  22. K.G. Chetyrkin, J.H. Kühn: Phys. Lett. B248 (1990) 359

    Google Scholar 

  23. CDF Coll., F. Abe et al.: Phys. Rev. Lett.65 (1990) 2243; Phys. Rev. D43 (1991) 2070; UA2 Coll., J. Alitti et al., Phys. Lett. B276 (1992) 354

    Google Scholar 

  24. OPAL Coll., P. Acton et al.: Z. Phys. C55 (1992) 1

    Google Scholar 

  25. ALEPH Coll., D. Decamp et al.: Z. Phys. C53 (1992) 1; DELPHI Coll., P. Abreu et al.: Nucl. Phys. B367 (1991) 511; L3 Coll., B. Adeva et al.: Z. Phys. C51 (1991) 179; The LEP Collaborations: ALEPH, DELPHI, L3 and OPAL: Phys. Lett. B276 (1992) 247

    Google Scholar 

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OPAL Collaboration., Acton, P.D., Alexander, G. et al. Precision measurements of the neutral current from hadron and lepton production at LEP. Z. Phys. C - Particles and Fields 58, 219–237 (1993). https://doi.org/10.1007/BF01560340

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  • DOI: https://doi.org/10.1007/BF01560340

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