Transcript Document

• First of all, a very big “thank you” to Misha
Danilov for thinking of this idea and bringing
us here to share in these two days, and allowing
us all to find a way to collectively work to make
this entity that enlivens all of our lives – this
idea of being able to bring the next sharp tool to
bear on the science of unfolding the mysteries
of flavor physics, into being.
•
THANK YOU, MISHA !
Danilov asks……
1.
What is the luminosity requirement to be able to do
the physics?
I believe that this question has been clearly,
and broadly, answered in the last few months
by the international physics community ! We
need a machine at, or above, a luminosity of
10**36 cm**-2 sec.**-1. We also need one that
respects the long range plans of our respective
regions. More on this later.
2. What kind of Super B would be best ?
I think we need a machine design that has
credibility with such a luminosity goal, and
that fits in with the long range plans of our
respective regions. More on this later.
3. What model for building the facility could
work here ?
I think that we all need to be fully behind a proposal
that there be one such facility in the world, and that
it is being put forward as a ‘regional initiative’, but
one that we broadly support, and one to which each
region will find a way to bring the appropriate
support.
4. What steps are required of the community
to move such an idea forward to success ?
Let me summarize what I ingjust said. We need to
recognize that our long range plans give almost
all the resources to the big ticket items that will
define the future of our field, when they come to
pass. We need to be part of that plan. We can do
that if we are all behind ‘a regional plan’ to build
‘a flavor factory’, and each region finding a way to
bring appropriate resources to the table.
• I believe the good news is “that we have that
region”, i.e. INFN, willing to carry that
proposal …
for a Flavor Factory
…
forward, and that as scientists interested in this
area of physics, we need to get behind that
proposal and try to persuade our regional
agencies to bring whatever support each
region feels that they can bring. [ i. e. either
cash contributions or ‘in kind’.]
Our Belle colleagues have a proposal for
Super KEK-B in front of their lab
management – and awaiting a decision.
• There is only room for one Super B facility
• It should have luminosity ≥ 10 36 cm-2sec-1
• The capability of flexible collision energy is
still under examination
(charm, B sub s, and tau experiments)
• Energy asymmetry can be reduced from 9 Gev
on 3 Gev – but it is important for the physics !
The B Factories
• The two B Factories have been very positive competition, and
have been very, very successful !
• Each success and each problem with the accelerators has been
shared, and immediately members of the other lab’s team have
been there to help solve, or to learn.
• The physics analysis teams have had a different mode – keeping
the analyses independent, so not falling into the ‘LEP
correlation’ problem. But the intense competition has helped
motivate very broad and well executed measurements.
• Productivity has been immense.
[~ a PRL each week, for years at a time !]
The B Factory Physics Legacy
• Confirmation of the KM mechanism
• Precise measurement of the CKM matrix
• Improved understanding of hadronic B decays
b→sγ‚
b→sll‚ b→Κ*γ‚ b→ργ,b→Фκº‚ b--> eta’κº ‚b 
κº πº
• Serious constraining of “New Physics” -
• Despite opportunities, no sign of New Physics yet. Now
need to research carefully for small effects/deviations.
The World ILC Activity
• The world HEP community has chosen that the next facility
they want to build attack the unknown, - a 500 Gev linear
electron-positron collider, the ILC ! ;
• The timing of that being ready for physics is rather
uncertain;
• The international accelerator community needs some realworld activities on the ground, during this wait;
• The possible synergy between a SuperB collider, and much
needed ILC R&D on damping ring and final focus
demonstrations, looks interesting, and may be attractive;
• The priorities from EPP 2010 were :
a) LHC program and upgrades;
b) full effort on the R&D design, ‘industrialisation’ and
the necessary preparation for the machine and the
detectors;
c) full effort to host the ILC in the US;
d) NSF, DOE and NASA should work together on
setting priorities for the important activities at
the interface of particle physics, astrophysics and
cosmology.
EPP 2010 Recommendations, continued
e)
neutrino physics activities be well focused and
coordinated via a staged program of experiments
developed with international collaboration and
planning;
and
f) US participation in large scale, high precision
experiments that probe particle physics beyond
the standard model should continue, but at a level
of support that can be managed.
The European Strategy for Particle Physics
1) LHC and its upgrades are top priority;
2) R&D towards ILC;
3) commit to strong effort to build the ILC;
4) support an optimal suite of neutrino experiments by 2012;
5) support a very important suite of particle and particle
astrophysics experiments;
and
The European Strategy for particle Physics, continued.
“ Flavour physics and precision measurements at the high-luminosity frontier
at lower energies complement our understanding of particle physics and
allow for a more accurate interpretation of the results at the high-energy
frontier; these should be led by national, or regional, collaborations, and
the participation of European laboratories and institutes should be
promoted.”
Flavour Physics will be important in
the LHC ERA
• Essentially unanimous report from the series of
CERN workshops on ‘Physics in the LHC Era’.
• Provide unique constraints or New Physics
• CP violation perhaps studied in the lepton sector
using polarised tau decay studies.
• D Mixing
• The International situation with regard to the next step
for Flavour Physics, is a little clouded.
• In the U.S., the National Academy Report, EPP 2010
has laid out a clear and ambitious agenda for HEP.
• In Europe, the strategic plan makes essentially the
same priorities.
• Flavour Physics is recognized, but not at the highest
priority.
• That place is reserved for the International Linear
Collider, bringing ‘surgical complementary’ to the
LHC program.
• ILC never been in better position!
• The schedule is quite ambitious.
• It is not unlikely that it will turn out to be longer –
possibly quite a bit, and even possibly never.
• What is best model if it is slower?
• I believe the potential of a real technical synergy between ILC and
Super B, and the recommendations of the US and European future
planning groups, allows a possible strategy here.
• Growing interest in the idea of Super B
• Modest scale enterprise (~$750 M)….
(a lot of re-usable hardware around the world)
• Totally new idea for colliders
• Synergy with ILC
• A big pay-off in physics productivity
• A large, and growing, community ready to
commit to build and exploit it.
• INFN is really serious about pursuing this possibility!
• Site would be agency, state and city funded; machine
funding would have a major share from INFN, and
regional commitment for the remaining support (in
kind) – is required.
• INFN is ‘floating the ship’ at present, and wants first
crack at a site local to Frascati. If that fails – other
regions can negotiate.
* The hope is for an early signal from the Italian
government ( ~2007 ).
Detector
• Either Belle or BaBar could be the basis of a
Super B detector.
• Available finances will be an important guide
on how to proceed– [the difference between
“better” and “good enough!”]
• Vertex, tracking detectors, DAQ and trigger will
be new – others systems can be minor or major
upgrades.
Sites
• INFN wants to try for a site a liitle east of
Frascati, [Tor Vegata], as their first choice.
• There are other possible sites around the
world’s accelerator labs :–
–
–
–
DESY
KEK
SLAC
FNAL
• CDR by beginning of 2007
• Collaboration formed by mid-2007.
(Machine and detector)
• TDR by 2008-2009, (including detector)
• Build by ~ 2013 - 15
I believe we are ballistic in pursuing one approach to
the creation of a Flavor Factory.
We should try to pull together an enthusiastic
international community to work on the proposal to
the Italian government. There is work to be done !
The expected time scale for response is short - ~ 2007.
Wait for a positive response.
• BACKUP SLIDES
• An amazing revolution has occurred in the last eighteen
months in electron positron collider design.
• Many seminal ideas that are implicit in the machine we
are talking about today, were not in the tool box !!
• This has been mainly due to the inventiveness of one
person – Panta Raimundi – following carefully what
synergies with the ILC can be exploited, and come up
with several entirely new concepts, that are proving
powerful. He has been ably assisted by John Seeman
and Marica Bignani, and colleagues at Frascati.
* This activity has changed the world’s design tools !