LISTSERV mailing list manager LISTSERV 16.5

Help for SNOWMASS-EF Archives


SNOWMASS-EF Archives

SNOWMASS-EF Archives


SNOWMASS-EF@LISTSERV.SLAC.STANFORD.EDU


View:

Message:

[

First

|

Previous

|

Next

|

Last

]

By Topic:

[

First

|

Previous

|

Next

|

Last

]

By Author:

[

First

|

Previous

|

Next

|

Last

]

Font:

Proportional Font

LISTSERV Archives

LISTSERV Archives

SNOWMASS-EF Home

SNOWMASS-EF Home

SNOWMASS-EF  April 2013

SNOWMASS-EF April 2013

Subject:

Re: FW: proposed agenda

From:

Heather Logan <[log in to unmask]>

Reply-To:

snowmass-ef Snowmass 2013 Energy Frontier conveners <[log in to unmask]>

Date:

Thu, 25 Apr 2013 19:59:20 -0400

Content-Type:

MULTIPART/MIXED

Parts/Attachments:

Parts/Attachments

TEXT/PLAIN (67 lines)

On Thu, 25 Apr 2013, Rick Van Kooten wrote:

>  I had to disconnect at 3:00 p.m. for another meeting so did not know if we 
> got around to discussing the below.
>
>> 
>> -------------------------------------------------------------------------------
>>
>>  Questions to us from the Cosmic Frontier, to be discussed today:
>> 
>> "HE1":  The message from the LHC seems to be that with data in hand,
>> we consistently outperform expectations for extraction of Higgs
>> properties. How much is there really for an ILC to contribute? What
>> key assumptions are we making now that we could relax with ILC
>> inputs?
>
>  Adding to some of the other written input, a key assumption that will be 
> made when enough stats are collected to allow access to all the other Br's at 
> the LHC is that there are no invisible and/or exotic/undetectable Higgs 
> decays adding to the total Higgs width.  In a number of projections, the 
> assumption is often made that all the Br's (also from couplings) will add up 
> to the 97-98% SM decays accessible to the LHC (i.e., removing charm).  A

BR(h -> gg) is about 8%, also inaccessible in the decays (though arguably 
constrainable by production).

-Heather

> straightforward example of an exotic decay is if the Higgs decayed to non-SM 
> particles that subsequently decayed hadronically (without heavy flavor) in a 
> way that would be difficult or impossible to detect with QCD backgrounds at 
> the LHC.
>
>  Lepton Higgs factories can clearly relax this assumption since they can 
> measure the total Higgs width in a model-dependent way, and would see _all_ 
> possible Higgs decays recoiling against the tagged Z in hZ events.  The 
> tremendous power of measuring (directly) the Z width at LEP was that it 
> definitively tested for _all_ kinematically accessible Z decays.  The same 
> level of test needs to be applied to the Higgs.
>
>  Regards,
>                Rick
>
> -- 
> Rick Van Kooten  \ Telephone: (812) 855-2650  FNAL: (630) 840-3859
> Dept. of Physics  \ HEP FAX:  (812) 855-0440
> Indiana University \ e-mail:   [log in to unmask]
> Swain Hall West 117 \ http://hep.physics.indiana.edu/~rickv/aboutme.html
> Bloomington, IN 47405
>
> ########################################################################
> Use REPLY-ALL to reply to list
>
> To unsubscribe from the SNOWMASS-EF list, click the following link:
> https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=SNOWMASS-EF&A=1
>

----------------------------------------------------------
Heather E. Logan     http://www.physics.carleton.ca/~logan
Department of Physics, Carleton University, Ottawa, Canada

########################################################################
Use REPLY-ALL to reply to list

To unsubscribe from the SNOWMASS-EF list, click the following link:
https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=SNOWMASS-EF&A=1

Top of Message | Previous Page | Permalink

Advanced Options


Options

Log In

Log In

Get Password

Get Password


Search Archives

Search Archives


Subscribe or Unsubscribe

Subscribe or Unsubscribe


Archives

March 2014
November 2013
October 2013
September 2013
August 2013
July 2013
June 2013
May 2013
April 2013
March 2013
February 2013
January 2013
October 2012

ATOM RSS1 RSS2



LISTSERV.SLAC.STANFORD.EDU

Secured by F-Secure Anti-Virus CataList Email List Search Powered by the LISTSERV Email List Manager

Privacy Notice, Security Notice and Terms of Use