In this paper the current release of the Monte Carlo event generator Sherpa, version 1.1, is
presented. Sherpa is a general-purpose tool for the simulation of particle collisions at high-
energy colliders. It contains a very flexible tree-level matrix-element generator for the …

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The Pythia program can be used to generate high-energy-physicsevents', ie sets of outgoing
particles produced in the interactions between two incoming particles. The objective is to
provide as accurate as possible a representation of event properties in a wide range of …

We update the constraints on new-physics contributions to ΔF= 2 processes from the
generalized unitarity triangle analysis, including the most recent experimental
developments. Based on these constraints, we derive upper bounds on the coefficients of …

The rare decay B→ K*(→ Kπ) μ+ μ− is regarded as one of the crucial channels for B physics
as the polarization of the K* allows a precise angular reconstruction resulting in many
observables that offer new important tests of the Standard Model and its extensions. These …

We update the theory predictions for the mass difference ΔM s, the width difference ΔΓ s and
the CP asymmetry in flavour-specific decays, a fs s, for the B s− bar B s system. In particular
we present a new expression for the element Γ 12 s of the decay matrix, which enters the …

New results for the complete one-loop contributions to the masses and mixing effects in the
Higgs sector are obtained for the MSSM with complex parameters using the Feynman-
diagrammatic approach. The full dependence on all relevant complex phases is taken into …

An angular analysis of the B 0→ K* 0 (→ K+ π−) μ+ μ− decay is presented. The dataset
corresponds to an integrated luminosity of 3.0 fb− 1 of pp collision data collected at the
LHCb experiment. The complete angular information from the decay is used to determine …

The computation of exclusive QCD jet observables at higher orders requires a method for
the subtraction of infrared singular configurations arising from multiple radiation of real
partons. We present a subtraction scheme relevant for NNLO perturbative calculations in e+ …

The Majorana nature of neutrinos can be experimentally verified only via lepton-number
violating processes involving charged leptons. We study 36 lepton-number violating (LV)
processes from the decays of tau leptons and pseudoscalar mesons. These decays are …