The LHC Early Phase for the ILC
WG I: Only one state, SM-like
Higgs boson, at the early stage of LHC
The charge of the working groups focussing on LHC / ILC interplay at the LHC early phase for the ILC workshop is to investigate various possible scenarios of early LHC data. For the purpose of this workshop "early LHC data" should be understood as an integrated luminosity of about 10 fb-1. In particular, the following questions should be addressed:
These questions should be investigated within the following classes of possible scenarios of results observed in the initial LHC runs:
a) The detection of only one state with properties that are compatible with those of a Higgs boson;
b) No experimental evidence for a Higgs boson at the early stage of LHC
c) The detection of new states of physics beyond the Standard Model
In analysing these scenarios, the
working groups should clearly distinguish between assumed experimental
signatures and their possible interpretations within certain models. Possible
theoretical uncertainties should be carefully investigated.
i) Missing energy (+ nothing, leptons, jets) signals
ii) Leptonic resonances
iii) Multi-Gauge-Boson signals
iv) Everything else.
The convenors will include one LHC experimentalist, one ILC experimentalist and one or two theorists for each group. Each group should identify the most promising physics channels for the class of events they are studying and have both detector as well as beam diagnostic experts as part of their working group.
The precision with which event and machine parameters can be measured needs to be convoluted with the anticipated signals to obtain meaningful ILC-LHC case studies in a uniform framework. The physics studies should identify the detector and machine specifications one needs to reach the physics goals. Where possible, the sensitivity of each process to critical detector and machine parameters ought to be studied.