This paper reviews and extends searches for the direct pair production of the scalar
supersymmetric partners of the top and bottom quarks in proton–proton collisions collected …

The accurate determination of the parton distribution functions (PDFs) of the proton is an
essential ingredient of the Large Hadron Collider (LHC) program. PDF uncertainties impact …

A bstract We present NNPDF3. 0, the first set of parton distribution functions (PDFs)
determined with a methodology validated by a closure test. NNPDF3. 0 uses a global …

We present a software framework for statistical data analysis, called HistFitter, that has been
used extensively by the ATLAS Collaboration to analyze big datasets originating from proton …

Abstract Epos is a Monte Carlo event generator for minimum bias hadronic interactions,
used for both heavy ion interactions and cosmic ray air shower simulations. Since the last …

The ratio of the measured B→ D (*) ℓ ν decay rates for ℓ= τ vs e, μ deviate from the standard
model (SM) by about 4 σ. We show that the data are in tension with the SM, independent of …

A bstract We revisit the Twin Higgs scenario as a “dark” solution to the little hierarchy
problem, identify the structure of a minimal model and its viable parameter space, and …

A bstract A search for new particles that decay into top quark pairs is reported. The search is
performed with the ATLAS experiment at the LHC using an integrated luminosity of 20.3 fb …

A bstract A search for heavy Majorana neutrinos in events containing a pair of high-p T
leptons of the same charge and high-p T jets is presented. The search uses 20.3 fb− 1 of pp …

We define a new class of Z′ models with neutral flavor-changing interactions at tree level in
the down-quark sector. They are related in an exact way to elements of the quark mixing …