Study of double parton scattering using W + 2-jet events in proton-proton collisions at sqrt(s) = 7 TeV
(2014) Journal of High Energy Physics — Vol. 1403, p. 32 (2014)
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- Abstract
- Double parton scattering is investigated in proton-proton collisions at sqrt(s) = 7 TeV where the final state includes a W boson, which decays into a muon and a neutrino, and two jets. The data sample corresponds to an integrated luminosity of 5 inverse femtobarns, collected with the CMS detector at the LHC. Observables sensitive to double parton scattering are investigated after being corrected for detector effects and selection efficiencies. The fraction of W + 2-jet events due to double parton scattering is measured to be 0.055 +/- 0.002 (stat.) +/- 0.014 (syst.). The effective cross section, sigma[eff], characterizing the effective transverse area of hard partonic interactions in collisions between protons is measured to be 20.7 +/- 0.8 (stat.) +/- 6.6 (syst.) mb.
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Citations
CMS Collaboration, Basegmez, S., Beluffi, C., Bruno, G., Castello, R., Caudron, A., Ceard, L., Da Silveira, G. G., Delaere, C., Du Pree, T., Favart, D., Forthomme, L., Giammanco, A., Hollar, J., Jez, P., Komm, M., Lemaitre, V., Liao, J., Militaru, O., et al. (2014). Study of double parton scattering using W + 2-jet events in proton-proton collisions at sqrt(s) = 7 TeV. Journal of High Energy Physics, 1403, 32. https://doi.org/10.1007/JHEP03(2014)032 (Original work published 2014)