YPP - SOME OF THE WORKING GROUPS FOR SNOWMASS 2001
Dear colleages,
There are a number of physics study groups that are preparing
the physics case for different machines. This is a perfect place
for young people to make a concrete crontribution. I am in charge
of two of those groups:
a) the gg-collider working groups
I give a brief description for both of them below. If you are
interested in joing please let me know and I will give you more
details.
Thanks,
********************** GAMMA-GAMMA COLLIDER ********************************
Given the importance of the upcoming SNOWMASS meeting, it is important to
bring into focus current understanding of physics and machine issues from
ongoing efforts. For this purpose we have a working group to study
different aspects of gg-collider.
Aside from general discussions of a photon collider as part of a high
energy e+e- program, we plan to discuss two newer ideas: the possibility
of building a ``Higgs factory'' with a photon-photon center of mass energy
around 120 GeV, and plans for running SLC in a photon collider mode, as a
proof of principle and opportunity for unique physics measurements.
*************************BRIGHTER BOOSTER STUDY********************************
*Neutrino oscillations
1) An upgraded NuMI/Minos experiment with 3-4 times the intensity and
an upgraded detector:
Include energy at which they should run
2) A neutrino oscillation experiment with a ~3000 km baseline
*Neutrino non-oscillations
*MI Fixed Target program
-What would be the ideal/required intensity for a
given measurement?
*Low energy muon/pion facility
*Collider experiments
b) higher intensity proton source --- this one affects
everything... Tevatron, pbar, main injector, etc.
Mayda
There are strong indications from precision electroweak measurements
favor a light Higgs boson, with a mass below 200 GeV. Assuming for
the moment that such a Higgs boson would be discovered at the TeVatron
or at the LHC, it is germane to study ways of measuring accurately the
properties (mass, total width, branching ratios, CP) of the new particle.
While many measurements can be carried out at an e+e- collider, at least
some of them are better done at a photon collider, according to existing
studies. Furthermore, the feasibility of a photon collider option within
existing e+e- designs has been established, although many details need to
be clarified, and design choices remain open.
=======================
Investigate the capabilities using the higher intensity
available with a new booster for:
a) asumme lower delta Dm2
b) current delta Dm2
c) higher delta Dm2
3) Mu_tau neutrino appearance
4) Mu_e appearance experiments
5) Lower neutrino energy (600 MeV) long baseline neutrino
experiments....K2K values giving even lower Dm2
==========================
1) A dependence, unpolarized structure functions, etc..
2) Spin-physics
========================
Investigate the measurement improvements that would be
available with increased beam intensity for rare kaon and
other experiments?
-Explore the possibilities for an expanded program
including nuclear and heavy-ion physics topics
-Spectroscopy
==============================
-Precision muon measurements
-Investigate the physics potential of a high intensity
low energy beam facility
-Investigate the potential for using this facility for
nu-factory cooling R&D
=====================
-What is the highest luminosity that the detectors can
use?
-Are there strategies to use higher luminosity for
specific physics measurements?
-Special emphasis on:
* BTeV
* Light Higgs searches at Tevatron (115-120 GeV)