We present a measurement of the polar-angle distribution of leptons from W boson decay, as a function of the W transverse momentum. The measurement uses an 80+/-4 pb(-1) sample of p (p) over bar collisions at roots=1.8 TeV collected by the CDF detector and includes data from both the W-->e+nu and W-->mu+nu decay channels. We fit the W boson transverse mass distribution to a set of templates from a Monte Carlo event generator and detector simulation in several ranges of the W transverse momentum. The measurement agrees with the standard model expectation, whereby the ratio of longitudinally to transversely polarized W bosons, in the Collins-Soper W rest frame, increases with the W transverse momentum at a rate of approximately 15% per 10 GeV/c.

D., A., T., A., M. G., A., D., A., D., A., K., A., et al. (2004). Measurement of the polar-angle distribution of leptons from W boson decay as a function of the W transverse momentum in p(p)over-bar collisions at root s=1.8 TeV. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 70(3) [10.1103/PhysRevD.70.032004].

Measurement of the polar-angle distribution of leptons from W boson decay as a function of the W transverse momentum in p(p)over-bar collisions at root s=1.8 TeV

PAOLETTI, RICCARDO;
2004-01-01

Abstract

We present a measurement of the polar-angle distribution of leptons from W boson decay, as a function of the W transverse momentum. The measurement uses an 80+/-4 pb(-1) sample of p (p) over bar collisions at roots=1.8 TeV collected by the CDF detector and includes data from both the W-->e+nu and W-->mu+nu decay channels. We fit the W boson transverse mass distribution to a set of templates from a Monte Carlo event generator and detector simulation in several ranges of the W transverse momentum. The measurement agrees with the standard model expectation, whereby the ratio of longitudinally to transversely polarized W bosons, in the Collins-Soper W rest frame, increases with the W transverse momentum at a rate of approximately 15% per 10 GeV/c.
2004
D., A., T., A., M. G., A., D., A., D., A., K., A., et al. (2004). Measurement of the polar-angle distribution of leptons from W boson decay as a function of the W transverse momentum in p(p)over-bar collisions at root s=1.8 TeV. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 70(3) [10.1103/PhysRevD.70.032004].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/39438
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