We report a measurement of the top-quark mass, M(t), in the dilepton decay channel of tt -> bl'(+) v(l')bl(l)(-v) using an integrated luminosity of 1.0 fb(-1) of pp collisions collected with the CDF II detector. We apply a method that convolutes a leading-order matrix element with detector resolution functions to form event-by-event likelihoods; we have enhanced the leading-order description to describe the effects of initial-state radiation. The joint likelihood is the product of the likelihoods from 78 candidate events in this sample, which yields a measurement of M(t) = 164.5 +/- 3.9 (stat.) +/- 3.9 (syst.) GeV/c(2), the most precise measurement of Mt in the dilepton channel.

Precision measurement of the top-quark mass from dilepton events at CDF II / Abulencia, A., Adelman, J., Affolder, T., Akimoto, T., Albrow, M.g., Ambrose, D., Amerio, S., Amidei, D., Anastassov, A., Anikeev, K., Annovi, A., Antos, J., Aoki, M., Apollinari, G., Arguin, J.f., Arisawa, T., Artikov, A., Ashmanskas, W., Attal, A., Azfar, F., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - STAMPA. - 75:3(2007), pp. 031105-1-031105-7. [10.1103/physrevd.75.031105]

Precision measurement of the top-quark mass from dilepton events at CDF II

DE CECCO, Sandro;DIONISI, Carlo;GIAGU, Stefano;MARGAROLI, Fabrizio;IORI, Maurizio;LOVERRE, Pier Ferruccio;MESSINA, Andrea;SORRENTINO, Lucia;
2007

Abstract

We report a measurement of the top-quark mass, M(t), in the dilepton decay channel of tt -> bl'(+) v(l')bl(l)(-v) using an integrated luminosity of 1.0 fb(-1) of pp collisions collected with the CDF II detector. We apply a method that convolutes a leading-order matrix element with detector resolution functions to form event-by-event likelihoods; we have enhanced the leading-order description to describe the effects of initial-state radiation. The joint likelihood is the product of the likelihoods from 78 candidate events in this sample, which yields a measurement of M(t) = 164.5 +/- 3.9 (stat.) +/- 3.9 (syst.) GeV/c(2), the most precise measurement of Mt in the dilepton channel.
2007
01 Pubblicazione su rivista::01a Articolo in rivista
Precision measurement of the top-quark mass from dilepton events at CDF II / Abulencia, A., Adelman, J., Affolder, T., Akimoto, T., Albrow, M.g., Ambrose, D., Amerio, S., Amidei, D., Anastassov, A., Anikeev, K., Annovi, A., Antos, J., Aoki, M., Apollinari, G., Arguin, J.f., Arisawa, T., Artikov, A., Ashmanskas, W., Attal, A., Azfar, F., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - STAMPA. - 75:3(2007), pp. 031105-1-031105-7. [10.1103/physrevd.75.031105]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/360575
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