OBSERVATION OF TOP-QUARK PRODUCTION IN (P)OVER-BAR-P COLLISIONS WITH THE COLLIDER DETECTOR AT FERMILAB

OBSERVATION OF TOP-QUARK PRODUCTION IN (P)OVER-BAR-P COLLISIONS WITH THE COLLIDER DETECTOR AT FERMILAB

We establish the existence of the top quark using a 67 pb-1 data sample of p̄p collisions at s=1.8 TeV collected with the Collider Detector at Fermilab (CDF). Employing techniques similar to those we previously published, we observe a signal consistent with tt̄ decay to WWbb̄, but inconsistent with...

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Main Authors: Abe, F, Akimoto, H, Akopian, A, Albrow, M, Amendolia, S, Amidei, D, Antos, J, Anwaywiese, C, Aota, S, Apollinari, G, Asakawa, T, Ashmanskas, W, Atac, M, Auchincloss, P, Azfar, F, Azzibacchetta, P, Bacchetta, N, Badgett, W, Bagdasarov, S, Bailey, M, Bao, J, Debarbaro, P, Barbarogaltieri, A, Barnes, V, Barnett, B
格式: Journal article
出版: 1995
實物特徵
總結:We establish the existence of the top quark using a 67 pb-1 data sample of p̄p collisions at s=1.8 TeV collected with the Collider Detector at Fermilab (CDF). Employing techniques similar to those we previously published, we observe a signal consistent with tt̄ decay to WWbb̄, but inconsistent with the background prediction by 4.8σ. Additional evidence for the top quark is provided by a peak in the reconstructed mass distribution. We measure the top quark mass to be 176±8(stat)±10(syst) GeV/c2, and the tt̄ production cross section to be 6.8-2.4+3.6 pb. © 1995 The American Physical Society.

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