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Measurement of the total hadronic cross section in e+e- annihilation at sqrt s =29 GeV.

  • Author(s): von Zanthier C
  • de Boer W
  • Grindhammer, G
  • Hylen, J
  • Harral, B
  • Hearty, C
  • Labarga, L
  • Matthews, J
  • Schaad, M
  • Abrams, G
  • Adolphsen, CE
  • Akerlof, C
  • Alexander, JP
  • Alvarez, M
  • Baden, AR
  • Ballam, J
  • Barish, BC
  • Barklow, T
  • Barnett, BA
  • Bartelt, J
  • Blockus, D
  • Bonvicini, G
  • Boyarski, A
  • Boyer, J
  • Brabson, B
  • Breakstone, A
  • Brom, JM
  • Bulos, F
  • Burchat, PR
  • Burke, DL
  • Butler, F
  • Calvino, F
  • Cence, RJ
  • Chapman, J
  • Cords, D
  • Coupal, DP
  • DeStaebler, HC
  • Dorfan, DE
  • Dorfan, JM
  • Drell, PS
  • Feldman, GJ
  • Fernandez, E
  • Field, RC
  • Ford, WT
  • Fordham, C
  • Frey, R
  • Fujino, D
  • Gan, KK
  • Gidal, G
  • Glanzman, T
  • Goldhaber, G
  • Green, A
  • Grosse-Wiesmann, P
  • Haggerty, J
  • Hanson, G
  • Harr, R
  • Harris, FA
  • Hawkes, CM
  • Hayes, K
  • Herrup, D
  • Heusch, CA
  • Himel, T
  • Hoenk, M
  • Hutchinson, D
  • et al.

A precise measurement of the ratio R of the total cross section e+e-hadrons to the pointlike cross section e+e-+- at a center-of-mass energy of 29.0 GeV is presented. The data were taken with the upgraded Mark II detector at the SLAC storage ring PEP. The result is R=3.920.050.09. The luminosity has been determined with three independent luminosity monitors measuring Bhabha scattering at different angular intervals. Recent calculations of higher-order QED radiative corrections are used to estimate the systematic error due to missing higher-order radiative corrections in the Monte Carlo event generators. © 1991 The American Physical Society.

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