TH - LPCC Summer Institute on LHC Physics - THLPCC11

A new jet shape to identify boosted hadronic objects (W/Z/H/top/etc).

We discuss the possibility of mass measurements for a SUSY-like decay chain with only 2 visible particles. This was never attempted and thought to be impossible before.

We show that a Z' with suppressed couplings to the electron compared to the Z-boson, with couplings to the b-quark, and with a mass close to the mass of the Z-boson, provides an excellent fit to forward-backward asymmetry of the b-quark and R_b measured on the Z-pole and $\pm 2$ GeV off the Z-pole, and to A_e obtained from the measurement of left-right asymmetry for hadronic final states.

how to look for the CDF dijet excess at the LHC (IF it's from rho_T -> W pi_T).

Motivated by natural electroweak symmetry breaking in supersymmetry, an effective model with light stop/higgsino and very light gravitino is considered. The implication of the LHC 1 fb^-1 data is also discussed.

I will discuss a scenario in which SUSY breaking is communicated by heavy vectorfields at tree-level. This gives rise to a simple and motivated model of SUSY breaking with peculiar predictions for sfermion mass ratios.

We describe the Lie-point symmetry method and how it can be used to systematically search for all continuous symmetries and parameter relationships in a classical field theory.

I describe how quantum mechanics plays a crucial role in defining probabilities (the "measure") in the multiverse, and how the eternally inflating multiverse leads to dramatic change of our view on spacetime and gravity. The latest result on the distribution of the cosmological constant is also presented. The talk is based mainly on arXiv:1104.2324 (but also arXiv:1107.3556).

I'll discuss the reach of the 7 TeV LHC in the search for Standard Model-like Higgs bosons in different benchmark scenarios, as well as the complementarity of the standard searches with non-standard Higgs searches.  Searches from SUSY Higgs bosons from cascade decays will also be discussed in some detail. 

We determine the degree of fine-tuning needed in a generalised version of the NMSSM that follows from an underlying Z4 or Z8 R-symmetry. We find that it is significantly less than is found in the MSSM or NMSSM and remarkably the minimal fine-tuning is achieved for Higgs masses of 130 GeV - 140 GeV.

In this talk I will discuss the exclusion and detectability prospects of Higgs bosons in three models: a) the Lee Wick Standard Model (arXiv:1104.3496), b) Beyond Minimal Supersymmetric Standard model (BMSSM) and c) Higgs portal models. We discuss the collider bounds on this model coming from LEP, Tevatron and LHC data.

squark--neutralino coupling at the high luminosity run of the LHC with some precision by analyzing a sample of high p_T monojet events.

I describe how a Wjj excess could arise in the 2HDM context, related signals and the theoretical issues that require that the excess be smaller than the CDF claim.

Collider Cross Talk. Abs:The search for the Standard Model-like Higgs boson via the decay into two W bosons is presented, based on data collected in 2011. The search in the dilepton final state is more powerful than any current result for intermediate mass Higgs bosons and has the highest sensitivity of the Higgs searches at the LHC. It is complemented by semi-leptonic WW decays which give good performance in the region of high mass.  Recent results by ATLAS and CMS will be discussed and the current limits on the Higgs mass will be shown.

we discuss the possibility of improving the sensitivity of Higgs boson searches by including all available angular variables.

I discuss a few simple models for invisible Higgs decays, and a method to constrain these models using the h \to ZZ \to 4l lineshape

n this talk I will discuss a scenario for asymmetric dark matter where the stable ADM states carry a (generalized) baryon number and can destroy nucleons through inelastic scattering, the rate for which is closely related to the cross section for monojet signals at the Tevatron and the LHC.

We argue that counting the number of invisible particles in missing energy events at the LHC can give us insight into the nature of dark matter, and explain how we might do this in practice.

We study the phenomenology of the Higgs-singlet mixed inflation for the extended Higgs sector with a singlet scalar in the SM