Elementary Particle Physics in the 21st Century

1
Report of U.S. EPP2010 Panel

• Elementary Particle Physics in the 21st Century
• Philip Burrows
• John Adams Institute
• Oxford University

2
What has changed since 1998?

• Most recent survey of Elementary Particle Physics
  was completed in 1998
• Since then, much has changed
• Discovery of Dark Energy
• Connections with Astronomy
• Discovery of Neutrino Mass
• Connections with Nuclear Physics
• Precision Electroweak Measurements
• World consensus on Linear Collider

3
EPP2010 Charge

• Committee is charged to
• Identify, articulate, and prioritize the
  scientific questions and opportunities that
  define elementary particle physics
• Recommend a 15-year implementation plan with
  realistic, ordered priorities to realize these
  opportunities
• Emphasis on evaluating science opportunities
• From that, a ranking of the facilities will flow
• Linear collider? Neutrino physics? Cosmology?

4
Committee members

N. Augustine (Lockheed Martin) Jon Bagger (JHU),
liaison to BPA P. Burrows (Oxford) Sally Dawson
(BNL), Vice-Chair S. Faber (UC observatories) S.
Freedman (UC, Berkeley) J. Friedman (MIT) D.
Gross (UC, Santa Barbara) J. Hezir (EOP Group) N.
Holtkamp (Oak Ridge) T. Kajita (Tokyo)
N. Lane (Rice) N. Lockyer (Penn) S. Nagel
(Chicago) H. Quinn (SLAC) R. Patterson
(Cornell) C. Shank (LBNL) Harold Shapiro
(Princeton), Chair P. Steinhardt (Princeton) H.
Neal (Michigan) H. Varmus (Sloan-Kettering) E.
Witten (IAS)
5
Not your usual Committee!

• Non-physicists
• Emphasize connections to society at large
• Sharpen physics questions
• Non-particle-physicists
• Help engage other scientific communities
• International representation
• Place U.S. particle physics in an international
  context
• Overall goal
• To present a compelling vision for the field and
  to create an action plan that will allow it to
  achieve its goals

6
The Recommendations

• The US should remain globally competitive in HEP
  and play a leading role in the worldwide effort
• 1) fully exploit opportunities at LHC
• 2) world-leading centre for ILC RD mount a
  compelling bid to build ILC in the US
• 3) expand particle astrophysics programme
  collaborate internationally on neutrinos

7
The ILC (1)

• The US should launch a major program of RD,
  design, industrialisation, management, and
  financing studies for accelerator and detectors
• 1) 300-500M over next 5 years on accelerator
• 2) 20-30M / year for detectors for 6-10 years
• (did not address detailed cost estimates for ILC)

8
The ILC (2)

• The US should announce its strong intent to
  become the host for the ILC
• Should undertake necessary work to provide a
  viable site (FNAL) and mount a compelling bid
• Only the ILC will allow the US to maintain, in
  the long term, a world-leading, internationally
  collaborative, programme in HEP

9
Neutrinos

• US should participate in a well-coordinated,
  staged, internationally planned programme
• Nature of neutrino mass (double beta decay)
• International study of accelerator-based
• experiments should determine a sensible plan
• Longer-term CP violation (proton decay)