12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > A measurement of the charge asymmetry of hadron...
View graph of relations

« Back

A measurement of the charge asymmetry of hadronic events in electron positron annihilation

Research output: Contribution to journalJournal article

Published

Journal publication date1989
JournalZeitschrift für Physik C: Particles and Fields
Journal number1
Volume42
Number of pages6
Pages1-6
Original languageEnglish

Abstract

The quark charge asymmetry, summed over flavours, has been measured at centre of mass energies of 35 GeV and 44 GeV using the JADE detector sited on the electron-positron storage ring PETRA. The asymmetry is found to be consistent with the expectations of the standard model at both energies and enables a measurement of the product of the axial-vector coupling constant of the electron with the axial-vector coupling constants of the quarks, assuming the moduli of these latter to be flavour independent. This gives, with reasonable assumptions concerning the effects of B0B0−−− mixing,a e a q =−1.09±0.18±0.23 where the first error is statistical and the second systematic.