The U (1)′ symmetry associated with a possible heavy Z′ would have profound
implications for particle physics and cosmology. The motivations for such particles in various …

We review the phenomenology of models with flat, compactified extra dimensions where all
of the Standard Model fields are allowed to propagate in the bulk, known as Universal Extra …

We present the activities of the" New Physics" working group for the" Physics at TeV
Colliders" workshop (Les Houches, France, 30 May-17 June, 2011). Our report includes new …

We present an update of the Standard Model fit to electroweak precision data. We include
newest experimental results on the top-quark mass, the W mass and width, and the Higgs …

An extraordinarily rich zoo of non-baryonic dark matter candidates has been proposed over
the last three decades. Here we present a ten-point test that a new particle has to pass in …

We derive constraints on the sign of couplings in an effective Higgs Lagrangian using prime
principles such as the naturalness principle, global symmetries, and unitarity. Specifically …

Heavy neutral gauge bosons arise in many motivated models of beyond the Standard Model
Physics. Experimental searches require that such gauge bosons are above the TeV scale in …

We study the prospects for detecting gamma-rays from decaying dark matter (DM), focusing
in particular on gravitino DM in R-parity breaking vacua. Given the substantially different …

We reexamine the constraints on universal extra dimensional models arising from the
inclusive radiative B¯→ X s γ decay. We take into account the leading order contributions …

We perform a complete calculation of the relic abundance of the KK-photon LKP in the
universal extra dimension model including all coannihilation channels and all resonances …