We present a measurement of the W-boson-pair production cross section in p (p) over bar collisions at 1.96 TeV center-of-mass energy and the first measurement of the differential cross section as a function of jet multiplicity and leading-jet energy. The W+W- cross section is measured in the final state comprising two charged leptons and neutrinos, where either charged lepton can be an electron or a muon. Using data collected by the CDF experiment corresponding to 9.7 fb(-1) of integrated luminosity, a total of 3027 collision events consistent with W+W- production are observed with an estimated background contribution of 1790 +/- 190 events. The measured total cross section is sigma(p (p) over bar --> W+W-) = 14.0 +/- 0.6(stat)(-1.0)(+1.2)(syst) +/- 0.8(lumi) pb, consistent with the standard model prediction.

Aaltonen, T., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., et al. (2015). Measurement of the production and differential cross sections of W+ W- bosons in association with jets in pp¯ collisions at √s = 1.96TeV. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 91(11) [10.1103/PhysRevD.91.111101].

Measurement of the production and differential cross sections of W+ W- bosons in association with jets in pp¯ collisions at √s = 1.96TeV

MAESTRO, PAOLO;
2015-01-01

Abstract

We present a measurement of the W-boson-pair production cross section in p (p) over bar collisions at 1.96 TeV center-of-mass energy and the first measurement of the differential cross section as a function of jet multiplicity and leading-jet energy. The W+W- cross section is measured in the final state comprising two charged leptons and neutrinos, where either charged lepton can be an electron or a muon. Using data collected by the CDF experiment corresponding to 9.7 fb(-1) of integrated luminosity, a total of 3027 collision events consistent with W+W- production are observed with an estimated background contribution of 1790 +/- 190 events. The measured total cross section is sigma(p (p) over bar --> W+W-) = 14.0 +/- 0.6(stat)(-1.0)(+1.2)(syst) +/- 0.8(lumi) pb, consistent with the standard model prediction.
2015
Aaltonen, T., Amerio, S., Amidei, D., Anastassov, A., Annovi, A., Antos, J., et al. (2015). Measurement of the production and differential cross sections of W+ W- bosons in association with jets in pp¯ collisions at √s = 1.96TeV. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 91(11) [10.1103/PhysRevD.91.111101].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/981139