Letter from the committee:
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Dear Brian, Juan and Steinar,
Following our mandate(1), the committee(2) you set up prepared a report meant as providing input from the Linear Collider community to the European Strategy.
The attached document is a draft of this report. It will be updated in July, taking stock of the latest LHC results(3). We also expect to receive comments
from the community that we aim to represent as best as we can.
To write the document the committee held numerous phone conferences and a few face-to-face meetings. The community was informed on several occasions on our work, most notably in middle of May when a town
hall meeting took place in Paris. We first delivered an initial draft to you and to a few reviewers. This initial draft received numerous comments which were all given careful consideration.
Best regards,
On behalf of the committee,
Francois Le Diberder
(1) Mandate:
The committee is requested to review the physics case for a linear electron-positron collider in the centre-of-mass energy range from around 250 GeV - 3 TeV in the light of LHC results up to mid-2012 and building on previous studies.
The committee should consider the case for a linear collider in terms of the physics reach beyond that of the LHC under the assumptions in the current CERN planning; a) 300 fb-1 and b) 3000 fb-1.
It should assume linear collider performance based on the details contained in current documents from ILC and CLIC but without a detailed comparison of the relative performance of the machines.
The aim is to make the strongest possible case for a generic linear collider for submission to the European Strategy process.
The committee is requested to submit its draft report to the GDE European Regional Director, the CERN Linear Collider Studies Leader and the Chair of the ECFA Study for the Linear Collider by June 18th 2012.
The final version of the report, should be delivered by end July.
(2) Committee membership: J. E. Brau, R. M. Godbole, F. R. Le Diberder, M. A. Thomson, H. Weerts, G. Weiglein, J. D. Wells, H. Yamamoto
(3) In particular, the event scheduled at CERN for the 4th of July will possibly affect some wording of the report.