We have studied the measurement accuracy of the forward-backward asymmetry of the e+e- → tt̄ process in the 6-jet mode at √s = 500 GeV with the ILD detector. In the analysis the vertex charges of b-jets were used to distinguisht from t̄ in each event. The distribution of the cosine of the reconstructed polar angle of so identifiedt or t̄ showed a clear forward-backward asymmetry. After the correction for charge misidenti-fication the forward-backward asymmetry was determined to be A t FB = 0.334±0.0079 for 500 fb-1 with the beam polarization combination of P(e+, e-) = (+30%,-80%), demonstrating a very good statistical accuracy (∼ 2%) even in the 6-jet mode.
|Number of pages||12|
|Publication status||Published - 2009 Dec 1|
|Event||8th General Meeting of the ILC Physics Working Group - Tsukuba, Japan|
Duration: 2009 Jan 21 → 2009 Jan 21
|Other||8th General Meeting of the ILC Physics Working Group|
|Period||09/1/21 → 09/1/21|
ASJC Scopus subject areas