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Hi Michael,

I understand the point about the timelines, but I think if we are talking about
"consensus" points, I think it became fairly clear at Snowmass that it's almost 
inconceivable that we can get complete understanding of the higgs / DM / EWSB
without building something like VLHC, and we should state that we recognize that 
such machine is necessary in the future.

-y

On Aug 20, 2013, at 2:26 PM, "Peskin, Michael E." <[log in to unmask]> wrote:

> 
> 
> Folks, 
> 
> I do agree that VLHC received wide interest at Snowmass.   
> 
> However, it is also important to recognize that the time scales for ILC and VLHC are 
> very different.  On the practical side, no one today is entertaining a proposal for a 
> 100 TeV pp collider.   On the physics side, we are just beginning the serious studies
> of the capabilities of a 100 TeV collider.  Only a few results were shown at Snowmass
> for the 33 TeV machine, and only one, I think, for the 100 TeV machine.   (There will
> be more 100 TeV results in the final writeups.)
> 
> In the summaries, Chip and I put a statement about ILC into the highest level 
> executive summary.  P5 will need to make a statement about ILC, so this input, which
> is strictly limited to the physics case and does reflect a consensus at Snowmass, is needed.
> 
> There is a brief statement about the 100 TeV machine in the latest version of the 
> Executive Summary, and a longer statement in the 5-page Energy Frontier summary.
> These reflect our attitude that the 100 TeV is important, but the issue is getting 
> ready for a proposal in 2020, not making a decision today.
> 
> If you would like it another way, please send some explicit language to this group.
> And, please take into account that space in the highest level executive summary is
> extremely limited.  We can make two points strongly -- which is what we tried to do --
> or make many points of which none registers above background.
> 
> Thanks,
> 
> Michael 
> 
> 
> -------------------------------------------------------------------------------------------
>  Michael E. Peskin                           [log in to unmask]
>  HEP Theory Group, MS 81                       -------
>  SLAC National Accelerator Lab.        phone: 1-(650)-926-3250
>  2575 Sand Hill Road                       fax:     1-(650)-926-2525
>  Menlo Park, CA 94025 USA              www.slac.stanford.edu/~mpeskin/
> ---------------------------------------------------------------------------------------------
> ________________________________________
> From: Jianming Qian [[log in to unmask]]
> Sent: Tuesday, August 20, 2013 1:24 AM
> To: Yuri Gershtein
> Cc: Markus A. Luty; Raymond Brock; Tom LeCompte; Peskin, Michael E.; snowmass-ef
> Subject: Re: [SNOWMASS-EF] Snowmass summary and Phone meeting request
> 
> Hello all,
> 
> I'd like to echo Markus and Yuri's comments. I think the support for an eventual 100 TeV pp collider is very strong, certainly not less strong than a Higgs factory.
> 
> Cheers, Jianming
> 
> 
> 
> On Tue, Aug 20, 2013 at 1:30 AM, Yuri Gershtein <[log in to unmask]<mailto:[log in to unmask]>> wrote:
> 
> On Aug 19, 2013, at 1:07 PM, "Markus A. Luty" <[log in to unmask]<mailto:[log in to unmask]>> wrote:
> 
> I believe it is imperative that the high-level Snowmass summary include a statement that VLHC also represents an exciting possibility for the next step forward.
> 
> I strongly agree.
> Even given different timescales for VLHC and ILC, the way Markus phrased it is right on.
> 
> -y
> 
> 
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--------------------------
Prof. Yuri Gershtein
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