We measure the polarization of W bosons from top-quark (t) decays into final states with a charged lepton and jets, t (t) over bar -> W(+)bW(-)(b) over bar -> lvbq (q) over bar (1)(b) over bar, using the full Run II data set collected by the CDF II detector, corresponding to an integrated luminosity of 8.7 fb(-1). A model-independent method simultaneously determines the fraction of longitudinal (f(0)) and right-handed (f(+)) W bosons to yield f(0) = 0.726 +/- 0.066(stat) +/- 0.067(syst) and f(+) = -0.045 +/- 0.044(stat) +/- 0.058(syst) with a correlation coefficient of -0.69. Additional results are presented under various standard model assumptions. No significant discrepancies with the standard model are observed. DOI: 10.1103/PhysRevD.87.031104

Measurement of W-boson polarization in top-quark decay using the full CDF Run II data set / T., A., S., A., D., A., A., A., A., A., J., A., G., A., J. a., A., T., A., A., A., J., A., W., A., B., A., A., A., F., A., W., B., T., B., A., B.G., V. e., B., B. a., B., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 87:3(2013), p. 031104. [10.1103/physrevd.87.031104]

Measurement of W-boson polarization in top-quark decay using the full CDF Run II data set

BAUCE, MATTEO;GIAGU, Stefano;IORI, Maurizio;MARGAROLI, Fabrizio;
2013

Abstract

We measure the polarization of W bosons from top-quark (t) decays into final states with a charged lepton and jets, t (t) over bar -> W(+)bW(-)(b) over bar -> lvbq (q) over bar (1)(b) over bar, using the full Run II data set collected by the CDF II detector, corresponding to an integrated luminosity of 8.7 fb(-1). A model-independent method simultaneously determines the fraction of longitudinal (f(0)) and right-handed (f(+)) W bosons to yield f(0) = 0.726 +/- 0.066(stat) +/- 0.067(syst) and f(+) = -0.045 +/- 0.044(stat) +/- 0.058(syst) with a correlation coefficient of -0.69. Additional results are presented under various standard model assumptions. No significant discrepancies with the standard model are observed. DOI: 10.1103/PhysRevD.87.031104
2013
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of W-boson polarization in top-quark decay using the full CDF Run II data set / T., A., S., A., D., A., A., A., A., A., J., A., G., A., J. a., A., T., A., A., A., J., A., W., A., B., A., A., A., F., A., W., B., T., B., A., B.G., V. e., B., B. a., B., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 87:3(2013), p. 031104. [10.1103/physrevd.87.031104]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/555882
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