Experimental Determination of the Radiative Correction Factor Δr and Phenomenological Analyses

  • In this paper the experimental value of radiative correction Δr was derived from the new data of sin 2θw and W boson mass Mw given by LEP,CDF and other collaborations.A careful comparison of (Δr)exp with the standard model expectation was carried out.We first calculated the Δr at full one-loop level,and then the main two-loop contributions were included.More stringent upper bounds on Mt were obtained from the analysis of probability distribution:Mt175GeV at 95%C.L. for a given MH=100GeV.The effects on Nt from other experimental and theoretical errors were also computed.
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  • [1] J. R. Carter, Talk given at LP-HEP' 91,Geneva, Switzerland, 25 July-1 August, 1991.[2]ALEPH Collab.Decamp et al.,CERN-PPE/91-105 ;[3]DELPHI Collab.P.Abreu et al.,CERN-PPEl91-95 ;[4]L3 Collab. B. Adeva et al.,L3 Preprint # 28.,Z. Phys.,C51(1991))179;[5]OPAL Collab. M. Z. Akrawy et al.,CERN-PPE/91-67.[6]S. L. Glashow, Nucl. Phys.,22(1961),579;S. Weinberg, Phys. Rev. Lett.,19(1967),1264;A. Salam, in Elementary Particle Theory, Eds. N. Svartholm, (1968).[7]P. Roudeau, Talk given at LP-HEP'91,Geneva, Switzerland, 25 July-1 August, 1991.[8]K. Sliwa, CDF Collaboration, Proc. 25th Rencontre de Moriond on Hadronic Interactions, Lea Arcs(1990).[9]G. Burgers et al.,in Z Physics at LEPl,ed. G. Altarelli et al.,CERN 89-08, Vol. I (1989),55[10]J. Ellis and G. Fogli, Phys. Lett.,B249 (1990),543 and reference there in; V. Barger et al.Phys.Rev.Lett.,65(1990),1313;G. Altarelli and R. Barhieri, Phys. Lett.,B253(1991),161.[11]D. Schaile et al.,Talk given at LP-HEP'91,Geneva, Switzerland, 25 July-1 August, 1991.[12]A. Sirlin, Phys. Rev.,D22(1980),971.[13]S. Narison, Phys. Rep.,84(1982)263;A. Sirlin, Phys. Lett.,B232(1989),123;G. Degrassi et al.,Nucl. Phys.,B351(1991),49.[14]H. D. Belch, CERN-PPE/90-168.[15]UA2 Collab. J. Alitti et al.,CERN-PPE/91-163.[16]CDF Collab. J. Huth, FERMILAB CONF-91/223-E.CDF Collab. L. Nodulman. FERMILAB CONF-91/232-E.[17]B. A. Kniehl,Nucl. Phys.,B347(1990),86.F. Halzen and B. A. Kniehl , Nucl. Phys.,B353(1991),567.[18]J. Ellis et al.,CERN-TH. 6130/91.
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XIAO Zhen-Jun, LU Gong-Ru and DING Yi-Bing. Experimental Determination of the Radiative Correction Factor Δr and Phenomenological Analyses[J]. Chinese Physics C, 1993, 17(6): 516-523.
XIAO Zhen-Jun, LU Gong-Ru and DING Yi-Bing. Experimental Determination of the Radiative Correction Factor Δr and Phenomenological Analyses[J]. Chinese Physics C, 1993, 17(6): 516-523. shu
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Received: 1900-01-01
Revised: 1900-01-01
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Experimental Determination of the Radiative Correction Factor Δr and Phenomenological Analyses

    Corresponding author: XIAO Zhen-Jun,
  • Department of Physics,Henan Normal University,Xinxiang 4530021 Department of Physics,Graduate School,Academia Sinica,Beijing 100039

Abstract: In this paper the experimental value of radiative correction Δr was derived from the new data of sin 2θw and W boson mass Mw given by LEP,CDF and other collaborations.A careful comparison of (Δr)exp with the standard model expectation was carried out.We first calculated the Δr at full one-loop level,and then the main two-loop contributions were included.More stringent upper bounds on Mt were obtained from the analysis of probability distribution:Mt175GeV at 95%C.L. for a given MH=100GeV.The effects on Nt from other experimental and theoretical errors were also computed.

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