Abstract
An analysis of the three leptonic reactionse + e −→e + e −,μ + μ − andτ + τ − over a wide range of energy,\(12< \sqrt s< 46.78 GeV\) is presented. The data were obtained with the JADE detector at thee + e − storage ring PETRA. They are compared to predictions of electroweak theories, in particular the standard model. For the total cross-sections of all three reactions and for the differential cross-section of Bhabha scattering no deviation from QED is found over the entire energy range. The differential cross-sections of μ and τ pairs at high energies show the angular asymmetry predicted by electroweak interference. The axial-vector and vector weak coupling constant, sin2 θ W andM Z are determined and compared to other measurements. Finally, limits on deviations from the standard model are given.
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S.L. Glashow: Nucl. Phys.22, 579 (1961); Rev. Mod. Phys.52, 539 (1980); A. Salam: Phys. Rev.127, 331 (1962); Rev. Mod. Phys.52, 525 (1980); S. Weinberg: Phys. Rev. Lett.19, 1264 (1967); Rev. Mod. Phys.52, 515 (1980)
JADE Collab. W. Bartel et al.: Phys. Lett.88B, 171 (1979); Phys. Lett.92B, 206 (1980)
H. Drumm et al. in: Wire Chamber conf. pp. 333, eds. W. Bartl, M. Regler. Amsterdam: North Holland 1980; J. Allision et al.: Nucl. Instrum. MethodsA238, 220 (1985); Nucl. Instrum. MethodsA238, 230 (1985)
JADE Collab. W. Bartel et al.: Z. Phys. C — Particles and Fields26, 507 (1985); JADE Collab. W. Bartel et al.: Z. Phys. C — Particles and Fields19, 197 (1983); JADE Collab. W. Bartel et al.: Phys. Lett.161B, 188 (1985)
F.A. Berends, R. Kleiss, S. Jadach: Nucl. Phys.B202, 63 (1982); F.A. Berends et al.: Nucl. Phys.57B, 381 (1973); Nucl. Phys.68B, 414 (1973); Nucl. Phys.63B, 381 (1973); Nucl. Phys.68B, 541 (1974); Nucl. Phys.177B, 237 (1981); Phys. Lett.63B, 432 (1976)
R. Budny: Phys. Lett.45B, 340 (1973); Phys. Lett.55B, 227 (1975)
Particle Data Book: Rev. Mod. Phys.52 (1980)
UA1 Collab. G. Arnison et al.: Phys. Lett.126B, 398 (1983); Phys. Lett.129B, 273 (1983); UA2 Collab. P. Bagnaia et al.: Z. Phys. C — Particles and Fields24, 1 (1984)
A. Sirlin, W.J. Marciano: Nucl. Phys.B189, 442 (1981); W.J. Marciano: 1983 Int. Symposium on Lepton and Photon Interactions at High Energies, pp. 80. Eds. D.G. Cassel, D.L. Kreinick, Cornell University, 1983
W. Wetzel: Nucl. Phys.B227, 1 (1983); Preprint Heidelberg (1983). Ats=1,195 GeV2 ΔA=+0.6% and ats=1,853 GeV2 ΔA=+1.1% were used
M. Boehm, W. Hollik: Nucl. Phys.B204, 45 (1982); Z. Phys. C — Particles and Fields23, 31 (1984); R.W. Brown, K. Decker, E.A. Paschos: Phys. Rev. Lett.52, 1192 (1984)
A symmary of recent (partially unpublished) results can be found in: B. Naroska: Physics in Collisions V. Autun, France, Eds. B. Aubert, L. Montanet, p. 287 (1985); CELLO Collab. H.J. Behrend et al.: Z. Phys. C — Particles and Fields14, 283 (1983); Phys. Lett.114B, 282 (1982); HRS Collab. M. Derrick et al.: Phys. Rev.D31, 2352 (1985); HRS Collab. K.K. Gan et al.: Phys. Lett.153B, 116 (1985); MARK J Collab. B. Adeva et al.: Phys. Rev. Lett.55, 665 (1985); MARK II Collab. N.E. Levi et al.: Phys. Rev. Lett.51, 1941 (1983); PLUTO Collab. Ch. Berger et al.: Z. Phys. C — Particles and Fields28, 1 (1985); TASSO Collab. M. Althoff et al.: Z. Phys. C —Particles and Fields26, 521 (1985)
M. Boehm et al.: Phys. Lett.144B, 414 (1984)
W. Krenz: Aachen preprint PITHA 84/42 (1984); submitted to Nucl. Phys. B
CHARM Collab. F. Bergsma et al.: Phys. Lett.147B, 481 (1984); L.A. Ahrens et al.: Phys. Rev. Lett.54, 18 (1984)
D.H. Saxon: Physics in Collisions IV. Ed. A. Seiden, UC Santa Cruz
A. Boehm: Measurement of sin2 θ W from the reactione + e −→μ + μ −, Un. Aachen Preprint PITHA 84/11 (1984); MARK J Collab. B. Adeva et al.: Phys. Rev. Lett.54, 665 (1985)
PLUTO Collab. Ch. Berger et al.: Z. Phys. C — Particles and Fields27, 341 (1985)
S.D. Drell: Ann. Phys.75, 4 (1958)
M.E. Peskin: Proc. Int. Symp. on Lepton and Photon Interactions at High Energies (1981), ed. W. Pfeil. Phys. Inst. der Universität Bonn
E.J. Eichten, K.D. Lane, M.E. Peskin: Phys. Rev. Lett.50, 811 (1983)
E.H. de Groot, G.J. Gounaris, D. Schildknecht: Phys. Lett.85B, 399 (1979); Phys. Lett.90B, 427 (1980); Z. Phys. C —Particles and Fields5, 127 (1980); Phys. Lett.95B, 128 (1980)
M. Kuroda, D. Schildknecht, K.-H. Schwarzer: Bieldefeld preprint BI-TP 84/22 (1984)
CELLO Collab. H.J. Behrend et al.: Z. Phys. C — Particles and Fields14, 283 (1983); MARK J Collab. B. Adeva et al.: Phys. Rep.109, 133 (1984); TASSO Collab. M. Althoff et al.: Z. Phys. C — Particles and Fields22, 13 (1984); HRS Collab. D. Bender et al.: Phys. Rev.D30, 515 (1984)
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JADE Collaboration., Bartel, W., Becker, L. et al. Tests of the standard model in leptonic reactions at PETRA energies. Z. Phys. C - Particles and Fields 30, 371–380 (1986). https://doi.org/10.1007/BF01557600
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DOI: https://doi.org/10.1007/BF01557600