Officers 2003 –2005
The membership of C11 is distributed broadly geographically and represents scientists at major laboratories as well as research universities.
IUPAP Sponsored Conferences 2003 - 2008
C11 normally only supports one conference per year the International Conference on High Energy Physics in even years and the International Symposium on Lepton- Photon Physics in odd years. These meetings are generally regarded as the premier meetings in the field.
The most recent conferences were
Future conferences are planned for
IUPAP GA-2005 Review of Conference Formats
In 2001 and 2004, C11 drafted guidelines for the scientific programs of the LP and ICHEP conferences. While both conferences cover almost all of the field of particle physics, their emphasis is slightly different. As the name indicates, the Lepton Photon Symposium focuses more on photons, leptons, and hadrons interactions. Heavy ion interactions are not usually covered. The program should emphasize current activities and recent results. Future developments in detector, accelerator, and computation techniques are considered important, though it should be recognized that, with the exception of some aspects of computing, the future changes very slowly, and thus annual reports in all areas might not be that interesting. In recent years, astrophysics and cosmology have been given more exposure, with emphasis on phenomena that lead to the observation of high energy particles. Organizers are encouraged to be selective and assure a balance between experiments and theory, recent and future developments. The program of previous years should not be a template for the years to come!
While the ICHEP series devotes half of the program to parallel sessions, the LP Symposium only has plenary sessions. To give more emphasis on recent results, the organizers are encouraged to arrange more topical talks, in addition to review talks covering past and current development of broader topics. It might be very interesting to arrange for a few topical sessions, with shorter talks on new developments. Such talks on specialized topics could provide opportunities for younger speakers.
There is concern that these large international conferences attract fewer and fewer participants. The tremendous development of communication tools has made it less attractive to attend these meetings. Collaborations are so large and set their own broad physics program that interest in other developments has somehow dwindled. To foster larger ttendance, especially by younger scientists, C11 recommends that organizers
As the conferences are now hosted in many locations in different countries, most of the hosts have never organized a conference of this kind, and some may not have broad expertise in the field. Thus C11 strongly encourages the organizers to carefully select the members of the International Program Advisory Committee and consult and interact repeatedly with them. In the future, C11 may decide to take a stronger role in the planning of the program of these conferences.
Formation of a C11 Working Group in Authorship
As HEP Collaborations supporting major experiments grow, there is increasing concern about authorship of scientific publications. It is widely realized that a straightforward extension of the current practices to much larger collaborations may not be recommendable, because
Members of C11 have discussed these issues and agree that it would
be desirable to
find ways of improving the current situation.
C11 has formed a Working Group that
is charged to examine the various types of publications, specifically
in reviewed journals vis-a-vis technical publications
with more restricted authorship,
to survey the current practices for the selection of authors, and
to examine the impact
Recent Developments and Plans for the Future of Particle Physics
In the past thirty years, the lasting achievement in particle physics has been the formulation of the Standard Model that describes the fundamental constituents of matter and their interactions with unparalleled precision. However, this theory is not an end to itself. It is known to be incomplete, has too many arbitrary parameters, and it is mathematically inconsistent at the TeV energy scale. In fact, experiments of the last decade have revealed that
C11 Report 3 IUPAP GA-2005
Realizing these fundamental and revolutionary developments of our view of the universe, the high energy communities in various parts of the world have charted roadmaps for future research in particle physics. They have identified the exploitation of the following current and soon to be completed facilities as the primary goals for the near future:
For the longer-term future, there is now general agreement among particle physicists that the next large accelerator facility should be a linear electron-positron collider with energies of 0.5 to 1 TeV in the center of mass. However, it is widely recognized that the number of experimental facilities at accelerators is shrinking rapidly. The so-called fixed-target experiments with a multitude of beams of different particles and different energies are being terminated worldwide. Larger and larger storage rings with one of two experiments operating at the energy frontier or smaller facilities providing laboratories for specialized high rate and high precision experiments have taken their place.
Particle physics is in the midst of a great revolutionary change. Recent data and ideas are challenging long-held assumptions about matter, energy, space and time. Theorists have found a way to reconcile gravity with quantum physics by producing all forces and particles as different vibrations of a superstring. It implies supersymmetry and introduces at least seven extra dimensions beyond the familiar four of space and time.
These new ideas are pointing to new experimental approaches, both at high energy accelerators as well as by astrophysical observation. Particle physicists are realizing that their field of expertise is well suited to address these questions and that presentand future technology will most likely lead to discoveries. To realize these opportunities, a joint effort across disciplines and collaboration of the world community would be very beneficial, if not critical.
ICFA and the International Linear Collider
C11 has sponsored the International Committee for Future
Accelerators (ICFA) since
1976. The 16 ICFA members are selected from all regions using accelerators,
the directors of major laboratories are members of
ICFA; the chair of C11 serves as
an ex-officio member of ICFA. ICFA is charged to promote international
collaboration in all phases of the design, construction, and exploitation
of very large
There is consensus that given the size and complexity of a high energy linear collider, only one such facility should be built worldwide, jointly by communities in Asia, the Americas and Europe. The various regions or laboratories are expected to share the responsibility for the construction, operation and maintenance. With the rapid growth in communication and networking, data and software can be readily shared and remote collaboration and operation are possible. ICFA has been helping to guide international cooperation on the Linear Collider since the mid 1990’s.
In summary, ICFA has played a critical role
in the world wide development of
accelerators and most recently in the promotion of world
wide collaboration on the
ILC. But, like the rest of
the high energy physicists,
ICFA will be looking into the
longer term future of accelerator-based science and will be assessing