Measurement of the $W+$ jets differential cross-sections in $$p\bar{p}$$ collisions at $$\sqrt{s} = 1.96$$ TeV using the CDF II Detector
- Univ. of Udine (Italy)
In this thesis the measurements of differential cross sections for the production of the $$W$$-boson in association with jets in $$p\bar{p}$$ collisions at $$\sqrt{s} = 1.96$$ TeV are presented. The measurements are based on 9.0 fb$$^{-1}$$ of CDF Run II data (i.e., the full dataset). Only events in which the W-boson decays leptonically (i.e., W → ev and W → μv)and at least one jet is present are considered. The lepton candidates are required to have a transverse energy $$E^{\ell}_T > 25$$GeV and pseudorapidity in the range |nℓ| < 1 whereas, the jets are reconstructed using the JETCLU algorithm with a radius of 0.4 requiring transverse energy $$E^{jet}_T > 25$$GeV and pseudorapidity in the range |ηjet| < 2. The reconstructed W-boson transverse mass should be greater than 40GeV/c2. The differential cross sections as a function of the jet multiplicity ($$N$$ > or = to 1, 2, 3, 4) and the leading jet transverse energy, are measured separately for each decay channel and then combined. For a meaningful comparison with theory the measured cross-sections are unfolded to remove detector effects. The resulting particle-level cross-sections are compared to theoretical predictions.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1331106
- Report Number(s):
- FERMILAB-THESIS-2015-39; oai:inspirehep.net:1495500
- Country of Publication:
- United States
- Language:
- English
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