Precise measurement of the total hadronic cross-section in e+ e- annihilation at s**(1/2) = 57.77-GeV - INSPIRE

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Precise measurement of the total hadronic cross-section in e+ e- annihilation at s**(1/2) = 57.77-GeV

VENUS

Collaboration

•

K. Yusa
(
- Tsukuba U., Inst. Appl. Phys.
)

1999

11 pages

Published in:

Phys.Lett.B 447 (1999) 167-177

DOI:

10.1016/S0370-2693(98)01560-3

View in:

ADS Abstract Service

reference search18 citations

Citations per year

Abstract: (Elsevier)

The total hadronic cross section in e + e − annihilation has been measured at s = 57.77 GeV using 290 pb −1 data sample collected with the VENUS detector at KEK TRISTAN. The cross section obtained is 140.3 ±1.8 pb for s ′/ s ≥0.5, where s ′ is the square of the invariant mass of the final state hadrons. The present result together with the recent results from the LEP collaborations is used to determine the hadronic γ − Z 0 interference parameter, j tot had , to be 0.196±0.083. The result is in good agreement with the Standard Model prediction of 0.220.

Hadron production by electron-positron collisions
Total hadronic cross section
γ –Z interference
Initial state radiation
S-matrix method
γ–Z interference
electron positron: colliding beams
electron positron: annihilation
hadron: electroproduction
total cross section: hadronic

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