Resumen
Abstract: A measurement of the cross-section for Z-boson production in the forward region of pp collisions at 8 TeV centre-of-mass energy is presented. The measurement is based on a sample of Z → e +e − decays reconstructed using the LHCb detector, corresponding to an integrated luminosity of 2.0 fb −1. The acceptance is defined by the requirements 2.0 < η < 4.5 and p T > 20 GeV for the pseudorapidities and transverse momenta of the leptons. Their invariant mass is required to lie in the range 60-120 GeV. The cross-section is determined to beσpp→Z→e+e−=93.81±0.41stat±1.48syst±1.14lumipb,$$ \sigma \left(\mathrm{pp}\to \mathrm{Z}\to {\mathrm{e}}^{+}{\mathrm{e}}^{-}\right)=93.81\pm 0.41\left(\mathrm{stat}\right)\pm 1.48\left(\mathrm{syst}\right)\pm 1.14\left(\mathrm{lumi}\right)\mathrm{p}\mathrm{b}, $$where the first uncertainty is statistical and the second reflects all systematic effects apart from that arising from the luminosity, which is given as the third uncertainty. Differential cross-sections are presented as functions of the Z-boson rapidity and of the angular variable ϕ ∗, which is related to the Z-boson transverse momentum.[Figure not available: see fulltext.]
Idioma original | English |
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Número de artículo | 109 |
Páginas (desde-hasta) | 1-21 |
Número de páginas | 21 |
Publicación | Journal of High Energy Physics |
Volumen | 2015 |
N.º | 5 |
DOI | |
Estado | Published - 1 may. 2015 |
Publicado de forma externa | Sí |
All Science Journal Classification (ASJC) codes
- Física nuclear y de alta energía