We report on ongoing RXTE observations of the X-ray transient MAXI J0556-332. This source was discovered on 2011 January 11 (ATel #3102) and has since been monitored on an almost daily basis with RXTE. A preliminary X-ray color analysis of ~470 ks of RXTE/PCA data reveals a somewhat chaotic pattern without a clear structure in the color-color (CD)

We report on a pointed RXTE/PCA observation of the transient source MAXI J1659-152 (Atel #2873,#2874,#2875,#2877,#2880 GCN #11296,#11299, #11307 - initially referred to as GRB 100925A). The observation started on 28th September 2010 at 00:51:10 UT, for a total integration time of ~ 16 ks. We find strong variability in the X-ray light curve (average

Measurements are reported of the normalized differential cross sections for top quark pair production with respect to four kinematic event variables: the missing transverse energy; the scalar sum of the jet transverse momentum (pT ); the scalar sum of the pT of all objects in the event; and the pT of leptonically decaying W bosons from top quark

A measurement of the t\overline{t} production cross section at √{s}=13 TeV is presented using proton-proton collisions, corresponding to an integrated luminosity of 2.2 fb-1, collected with the CMS detector at the LHC. Final states with one isolated charged lepton (electron or muon) and at least one jet are selected and categorized according to the

A measurement of the underlying event (UE) activity in proton-proton collisions is performed using events with charged-particle jets produced in the central pseudorapidity region (| η jet| 2) and with transverse momentum 1 ≤ p {T/jet} 100 GeV. The analysis uses a data sample collected at a centre-of-mass energy of 2.76 TeV with the CMS experiment

A measurement is presented of the Z/γ ^{*} → τ τ cross section in {pp} collisions at √{s} = 13 TeV, using data recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 2.3 fb^{-1}. The product of the inclusive cross section and branching fraction is measured to be σ ( {pp} → Z/γ ^{*} {+X}) B(Z/γ ^{*} → τ τ ) = 1848 ±