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LRP2010 - WG5 Fundamental Interactions. Town Meeting Madrid, June 1 - 3, 2010. Nathal Severijns ( K.U.Leuven) for WG5. WG5 members R. Calabrese (Italy) G. Drexlin (Germany) D. Horvath (Hungary) K. Kirch (Switzerland) K. Pachucki (Poland) F. Piquemal (France)

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LRP2010 - WG5

Fundamental Interactions

Town Meeting

Madrid, June 1 - 3, 2010

Nathal Severijns

(K.U.Leuven)

for WG5

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010


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WG5 members

R. Calabrese (Italy)

G. Drexlin (Germany)

D. Horvath (Hungary)

K. Kirch (Switzerland)

K. Pachucki (Poland)

F. Piquemal (France)

S. Schoenert (Germany)

N. Severijns (Belgium)

R. Timmermans (The Netherlands)

C. Volpe (France)

C. Weinheimer (Germany)

O. Zimmer (France)

K. Jungmann (The Netherlands)

E. Widmann (Austria)

thanks to colleagues who contributed as non-WG5 member

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010


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particles

symmetries

interactions

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010


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Key questions

- Which fundamental symmetries are conserved in nature?

  • What is the origin of the matter dominance in the universe?

- Are there new sources of CP violation?

- What are the properties of antimatter?

- What are the properties of the neutrino?

- Are there otherforces than the four known ones?

- Are there new particles and what is their role in the universe?

- What are the precise values of the fundamental constants?

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010


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Key issues

1. Fundamental Fermions

- Neutrino oscillations and the neutrino mixing matrix

- Neutrino masses (direct measurements and double beta decay exps.)

- Quark mixing matrix and unitarity

- New (time reversal invariant) interactions in nuclear and muon β-decays

2. Discrete symmetries

- Parity violation

- Time reversal and CP violation in the quark sector (e.g. EDM’s)

- CPT and Lorentz invariance

3 Properties of known basic interactions

- QED and fundamental constants (e.g. g-2, α, anti-H, H-like ions, … )

- QCD (exotic atoms)

- Gravity (e.g. matter vs. antimatter behavior, … )

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010


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Future directions - overview

1. Fundamental Symmetries

- Time reversal and CP violation

- Parity non-conservation in atoms and ions

- CPT conservation and Lorentz invariance

2. Neutrinos

- Nature and mass of neutrinos

- Neutrino mixing parameters and the CP violating phases

3. Electroweak interactions

- Precision measurements in beta decay

- Precise QED studies within the Standard Model

Recommendations - overview

1. Support of small-sized laboratory and university groups

2. Support for and from theory

3. Facilities

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010


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1. Fundamental symmetries

a. Time reversal and CP violation in the quark sector

e.g. permanent EDM‘s

matter – anti-matter asymmetry

a nonzero particle EDM violates P, T and, assuming

CPT conservation, also CP

investigate different systems,

providing complementary

information on different

sources of CP violation 

  • for p, d EDM exps. good

  • prospects with ring

  • (e.g. plans for COSY)

  • R- and D-corr. in  decay

  • (nTRV @ PSI)

some current EDM constraints :

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010


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1. Fundamental symmetries

b. Parity non-conservation in atoms and ions

e.g. APV: test of the SM through measurements of the Weinberg angle

  • Future measurements:

  • - trapped atoms and ions with

  • enhanced APV effect, in casu

    • Fr, Ba+, Ra+

  • - measurements on series of isotopes

APV is complementary to parity-violating electron scattering (APVin graph)

for determining effective weak couplings of quarks and search for new physics beyond SM

Note: experiments at low energy very clean since radiative corrections are minimal

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010


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1. Fundamental symmetries

c. CPT conservation and Lorentz invariance

CPT: e.g. spectroscopy of - antiprotonic atoms (pbar-p, pbar-He)

(AD-CERN) - antihydrogen (i.e. e+-pbar atom)

AD-CERN

Need for future facilities: ELENA, FLAIR

Lorentz violation: test frame dependence of observables

close interaction with theorists is essential

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010


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2. Neutrino masses, oscillations and mixing matrix

Neutrino masses

 hierarchy

 Dirac or Majorana particle ??

- direct measurements: KATRIN spectrometer, sensitivity = 0.2 eV

MARE calorimeters, phase-II sensit. = 0.2 eV

- 0 decay: CUORE (130Te), SuperNEMO (150Nd or 82Se),

GERDA (76Ge): sensitivity ≈ 0.05 – 0.3 eV

needs: - enrichment of isotopes

- experiments to support matrix elements calculations

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010


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2. Neutrino masses, oscillations and mixing matrix

flavor eigenstates mass eigenstates 

atmospheric reactor solar

Neutrino

mixing

matrix:

oscillation experiments (e.g. Double Chooz)  determine size of 13

if 13 large  search for CP violation in lepton sector (phase )

 superbeams, neutrino factories, beta-beams (esp. if 13 < 0.02)

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010


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3. Electroweak interactions

a. Precision measurements in  decay

A. CKM quark mixing matrix

stronglimits on physics beyond Standard Model

e.g. - scalar currents

- right-handed crts.

(masses,  decays

theory, …)

from K decays

 0.99995(61)

Future: - improve precision

(spectroscopy, mass measurements)

- neutron lifetime issue !

- new transitions

(e.g. superallowed, T = 1/2 mirror)

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010


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J

B. Correlation measurements in  decay

search for non-SM weak interactions:

- S & T currents

- new V, A interactions (e.g. V+A)

- neutron decay

a, A, B, R, … correlations with

aSPECT, PERKEO, nTRV, …

reliable value for lifetime n needed !

n = 885.7(8) s

An

PERKEO

n = 878.5(8) s

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010


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B. Correlation measurements in  decay

- nuclear beta decay

a, A, … correlations

- particle traps (@ GANIL, ISOLDE, KVI, … )

- simulation codes

- needs for field

- higher yields (nuclei & UCN)

- polarized samples in traps ( tensor, right-handed currents, …)

- precise determination of nuclear polarization

- improved simulation codes

- long beam times

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010


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3. Electroweak interactions

b. Precise QED studies within the SM

Accurate QED predictions required for

improved determinations of fundamental constants (e.g. α, me, …)

Precisions @ 10-13 level reached

- g-2 measurements: electron  α

muon  test standard model

  • light hydrogenic ions, muonic & pionic hydrogen, …

  • e.g. me from L/ cfor C5+

  • light few-body atoms: He, Li, pbar-He, …

  • highly charged ions

  • e.g. QED in strong E-fields, magnetic moments, …

  • many-electron atoms

    • theory: electron correlations, …

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010


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QCD and Gravitaiton

QCD

- pionic atoms (e.g. DIRAC exp, PSI)

  • kaonic atoms & kaonic nuclear bound states

  • e.g. SIDDHARTA, AMADEUS, AD, FLAIR

  • pbar-atoms ([email protected], FLAIR)

Gravitation

  • gravitational interaction of antimatter

  • e.g. gravitational mass of anti-H with [email protected]

  • searches for non-Newtonian gravity

  • e.g. test law of gravity at small distances (GRANIT, qBounce, ..)

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010


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Future directions - overview

1. Fundamental Symmetries

- Time reversal and CP violation

- Parity non-conservation in atoms and ions

- CPT conservation and Lorentz invariance

2. Neutrinos

- Nature and mass of neutrinos

- Neutrino mixing parameters and the CP violating phases

3. Electroweak interactions

- Precision measurements in beta decay

- Precise QED studies within the Standard Model

Recommendations - overview

1. Support of small-sized laboratory and university groups

2. Support for and from theory

3. Facilities

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010


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Recommendations - 1

- training of young people

- development of new techniques

- detectors

- to improve/extend possibilities of traps

  • Support of small-sized laboratories and university groups

  • Support for theory

andfrom theory

  • Facilities

1. for precise QED studies with low-energy antiprotons

ELENA @ CERN, later [email protected]

2. underground laboratories (upgrades / new ones)

3. upgraded and new facilities

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010


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Recommendations - 2

  • Support of small-sized laboratories and university groups

  • Support for and from theory

  • Facilities

1. for precise QED studies with low-energy antiprotons

2. underground laboratories

3. upgraded and new facilities (time-ordered approach)

nuclei - HIE-ISOLDE

- SPIRAL2 (DESIR)

- EURISOL

neutrons - UCN source @ FRM-II

- European Spallation Source

anti-p - modules 4 & 5 of FAIR (for QED & antiproton research)

  • regular access to beams & long continuous beam time periods:

    • nuclei: [email protected]

  • neutrons: high-intensity neutron sources

  • QED: sources of coherent short-wavelength e.m. radiation

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010


The myrrha concept sck cen mol belgium www sckcen be myrrha l.jpg
The MYRRHA concept (SCK•CEN, Mol, Belgium)www.sckcen.be/myrrha/

Sub-critical reactor

Accelerator (600 MeV proton, 4 mA)

ADS “Accelerator Driven System”

Spallation source

( proton  neutron )

Neutron multiplier

Flexible irradiation facility

Fast

neutron

source

Waste transmutation

Material testing

others: RI, NTD-Si,...

Lead-Bismuth

coolant

http://www.sckcen.be/myrrha/


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Future directions

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010




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Recommendations 2010

WG5 - N. Severijns - Town Meeting, Madrid, May 31 - June 2, 2010



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