Measurement of the tt̄W and tt̄Z production cross sections in pp collisions at √s = 8 TeV with the ATLAS detector

The production cross sections of top-quark pairs in association with massive vector bosons have been measured using data from pp collisions at s√ = 8 TeV. The dataset corresponds to an integrated luminosity of 20.3 fb−¹ collected by the ATLAS detector in 2012 at the LHC. Final states with two, three or four leptons are considered. A fit to the data considering the tt̄W and tt̄Z processes simultaneously yields a significance of 5.0σ (4.2σ) over the background-only hypothesis for tt¯Wtt¯W (tt̄Z) production. The measured cross sections are σtt̄W = 369 + 100−91 fb and σtt̄Z = 176 + 58−52 fb. The background-only hypothesis with neither tt̄W nor tt̄Z production is excluded at 7.1σ. All measurements are consistent with next-to-leading-order calculations for the tt̄W and tt̄Z processes

Niosomes

The chapter spans the chemistries, which are harnessed to create niosomes, the concepts upon which their application rests and model examples of the exploitation of this new knowledge to bring healthcare benefits

Measurement of double charmonium production in e(+)e(-) annihilations at root s=10.6 GeV

We study e(+)e(-)-> J/psi c ($) over bar by measuring the invariant mass distribution recoiling against fully reconstructed J/psi decays, using 124 fb(-1) of data collected at a center-of-mass energy of 10.6 GeV with the BABAR detector. We observe signals for eta(c)(1S), chi(c0), and eta(c)(2S) in the recoil mass distribution, thus confirming previous measurements. We measure sigma(e(+)e(-)-> J/psi+c (c) over bar )B(c (c) over bar ->> 2 charged) to be 17.6 +/- 2.8(stat)(-2.1)(+1.5)(syst) fb, 10.3 +/- 2.5(stat)(-1.8)(+1.4)(syst) fb, and 16.4 +/- 3.7(stat)(-3.0)(+2.4)(syst) fb with c (c) over bar=eta(c)(1S), chi(c0), and eta(c)(2S), respectively. RI Peters, Klaus/C-2728-2008; de Groot, Nicolo/A-2675-2009; Patrignani, Claudia/C-5223-2009; Lista, Luca/C-5719-2008; Bellini, Fabio/D-1055-2009; Roe, Natalie/A-8798-2012; Neri, Nicola/G-3991-2012; Monge, Maria Roberta/G-9127-201