E-viri
PDF
Recenzirano
Odprti dostop
-
A new jet algorithm based on the k-means clustering for the reconstruction of heavy states from jetsChekanov, S.
The European physical journal. C, Particles and fields, 9/2006, Letnik: 47, Številka: 3Journal Article
A jet algorithm based on the k-means clustering procedure is proposed which can be used for the invariant-mass reconstruction of heavy states decaying to hadronic jets. The proposed algorithm was tested by reconstructing e+e-→tt̄→6 jets and e+e-→W+W-→4 jets processes at \(\sqrt{s}=500\,\mathrm{GeV}\) using a Monte Carlo simulation. It was shown that the algorithm has a reconstruction efficiency similar to traditional jet-finding algorithms, and leads to 25% and 40% improvement of the top-quark and W mass resolution, respectively, compared to the kT (Durham) algorithm. In addition, it is expected that the peak positions measured with the new algorithm have smaller systematical uncertainty.
