Dear All Registration for the Workshop PhysTeV 2011, Physics at TeV Colliders, better known as Les Houches Workshop, has been effective since Dec 10. http://phystev.in2p3.fr/Houches2011/ The meeting in Les Houches will consist of two consecutive sessions over the period 30 May to 17 June 2011. Registration will close on Feb 15 2011. Note that the Les Houches Centre can only accommodate about 70 people at any given time, there will be a selection process. Some info on the Workshop This Workshop is the seventh in a series whose aim is to bring together theorists and experimentalists working on the phenomenology of the upcoming TeV colliders. The emphasis in this series of workshops has been on the physics at the LHC and the Tevatron. In 2011 we will, at last, have data from the LHC and therefore a particular attention will be given on the one hand on the progress in new techniques for the simulation of Standard Model processes and on the other on the latest developments concerning new mechanisms of symmetry breaking and the New Physics. The Workshop will address issues about how to best exploit these data as well as how to prepare for future data. Another issue will address the physics with a higher energy LHC. These activities will be conducted in close connection with the development and improvements of tools in particular of Monte-Carlo event generators. The Workshop is structured around three main working groups. The meeting in Les Houches is the central event of this year-long Workshop. ps: sorry if you receive this message more than once The LH2011 Organisers -- Prof. Rohini Godbole, Centre for High Energy Physics Indian Institute of Science, Bangalore 560012, India. Email: [log in to unmask] Phone: +91-80-2293-2845 (off) +91-80-2360-8357 (home) Fax: +91-80-2360-0683,2360-0085, 2360-0106 Current Address: Theoretical Physics, CERN, CH-1211, Geneva-23, Switzerland. 0041-22-767-2418