MEASUREMENT OF THE TOTAL HADRONIC CROSS-SECTION IN E(+)E(-) ANNIHILATION AT SQUARE-ROOT-S=29 GEV

被引：4

作者：

VONZANTHIER, C

机构：

[1] Lawrence Berkelely Laboratory, Department of Physics, University of California, Berkeley

[2] University of California, Santa Cruz

[3] Indiana University, Bloomington

[4] Stanford Linear Accelerator Center, Stanford University, Stanford

[5] California Institute of Technology, Pasadena

[6] Johns Hopkins University, Baltimore

[7] University of Michigan, Ann Arbor

[8] University of Hawaii, Honolulu

[9] University of Colorado, Boulder

[10] Universität Karlsruhe

[11] Max-Planck-Institut, M̈nchen

[12] Universidad Autanoma de Madrid, Canto Blanco, Madrid

[13] Elektrowatt Ingenieurunternehmung AG

[14] Universidad Autanoma de Barcelona, Bellaterra

[15] Brookhaven National Laboratory, Upton

[16] Boston University, Boston

[17] Carleton University, Ottawa

[18] Universitat Politecnica de Catalunya, ETSEIB-DEN, Barcelona

[19] CERN, CH-1211

[20] Columbia University, New York

[21] Cornell University, Ithaca

[22] Centre de Recherches Nucleaires

[23] Fermilab, Batavia

[24] Harvard University, Cambridge

[25] Laboratoire de lAccèlèrateur Linèaire

[26] Lab. F̈r Hochenergie Physik Bern

[27] OConner and Associates, Chicago

[28] University of Oklahoma, Norman

[29] University of Oregon, Eugene

[30] Princeton University, Physics Department, Princeton

[31] SCS, Hamburg

[32] University of Tennessee, Knoxville

[33] University of Toronto, Toronto, Ont.

[34] University of California, Berkeley

[35] University of California, Riverside

[36] Vanderbilt University, Nashville

来源：

PHYSICAL REVIEW D | 1991年 / 43卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.43.34

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A precise measurement of the ratio R of the total cross section e+e- --> hadrons to the pointlike cross section e+e- --> mu+mu- 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 = 3.92+/-0.05+/-0.09. 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.

引用

页码：34 / 45

页数：12

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