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Perspectives of Antiproton and Antikaon Physics. pbar. Paul Kienle Stefan Meyer Institut/ÖAW Wien and TU München. Proc. LEAP 05 , AIP publication 2005. Some Selected Topics. Antiprotons for Charm Physics Kaonic Nuclear Clusters – Production with Antiproton Annihilation - PowerPoint PPT Presentation
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P. Kienle ECT* Antiproton Workshop 03.07.2006 1
Perspectives of Antiproton and Antikaon Physics
Paul KienleStefan Meyer Institut/ÖAW Wien and TU München
pbar
Proc. LEAP 05 , AIP publication 2005
P. Kienle ECT* Antiproton Workshop 03.07.2006 2
Some Selected Topics
• Antiprotons for Charm Physics
• Kaonic Nuclear Clusters – Production with
Antiproton Annihilation
• Mesons and Antiprotons in Nuclear Media
• Anti Deuteron Beams for Charm in Nuclei?
• Can we breed Anti Helium?
• Fundamental Symmetries and Antihydrogen
Case Studies: Y(4260)X(3872)Z(3930)X(3940)Y(3940).
.
.
P. Kienle ECT* Antiproton Workshop 03.07.2006 3
Antiprotons for Charm Physics
P. Kienle ECT* Antiproton Workshop 03.07.2006 4
Spectroscopy of Charmonium States
• Measurement of the total width and all branching widths of the charmonium states
• Determination of the transition probabilities
• Deduction of the wave functions of the states
• Access to non-perturbative and thus confinement effects
• Needs advanced QFT treatment (Weise et al.)
Such a program was proposed by Bertold Stech ~ for the bottomonium system to search for non-perturbative effects. It looks even more promising for charmonium. Who does it ???
P. Kienle ECT* Antiproton Workshop 03.07.2006 5
HESR
b
1. Minimize circumference
2. Electron cooler is essentia
P. Kienle ECT* Antiproton Workshop 03.07.2006 6
Structures to be Discovered
P. Kienle ECT* Antiproton Workshop 03.07.2006 7
Case Study: Y(4260)
P. Kienle ECT* Antiproton Workshop 03.07.2006 8
Strategies
P. Kienle ECT* Antiproton Workshop 03.07.2006 9
PANDA @ FAIR vs. e+e-
P. Kienle ECT* Antiproton Workshop 03.07.2006 10
X(3872) an Other Case?
P. Kienle ECT* Antiproton Workshop 03.07.2006 11
X(3872) a Molecule !?
P. Kienle ECT* Antiproton Workshop 03.07.2006 12
Z(3930) Case
P. Kienle ECT* Antiproton Workshop 03.07.2006 13
2 3P0 Charmonium
P. Kienle ECT* Antiproton Workshop 03.07.2006 14
Kaonic Nuclear Clusters
Production with pbar Annihilation
P. Kienle ECT* Antiproton Workshop 03.07.2006 15
Strangeness and Charm in Nuclei
• Discovery of strange tribaryon: ppnK-, pnnK- with binding energies of about 200 MeV and Γ< 20 MeV
• Work in progress to search for predicted high density of these kaonic nuclear clusters with <ρ>~ 3ρ(0)
• Production of kaonic nuclear clusters by antiproton absorption, including transfer of 2 antikaons to produce high density matter kaon condensation ? New form of fermionic matter ???
• The creation of charmed bound nuclear matter {D+n} is a real challenge. Anti-deuteron annihilation ??? Subthreshold antiproton annihilation ???
P. Kienle ECT* Antiproton Workshop 03.07.2006 16
3He K-ppn (0)=0.14 (0)~1.5
B = 20 MeV B ~118 MeV
K-K-ppn(0)~3.0
B ~221 MeV
Single-K- Double-K-
Dote et al. 2002
P. Kienle ECT* Antiproton Workshop 03.07.2006 17
Summary of the Search for Deeply Bound Kaonic States
P. Kienle ECT* Antiproton Workshop 03.07.2006 18
Exclusive Experiments-Formation and Decay
P. Kienle ECT* Antiproton Workshop 03.07.2006 19
K-(3He,n) ppK- @ JPARC
P. Kienle ECT* Antiproton Workshop 03.07.2006 20
K- Potential and ppnK- Bound State
Bound nuclear state
Small width
High density ~3n
Experimental result4He(stopped K-, n) ppnK-
BK ~ 173 MeV, GK ~ 25 MeV Predicted (Akaishi 2002)
BKth ~127 MeV , GK ~ 30 MeV
P. Kienle ECT* Antiproton Workshop 03.07.2006 21
Fast Pion Triggered Neutron Momentum Spectra with Various Conditions Preliminary
10MeVee threshold only
10MeVee threshold L-arm with software veto
10MeVee threshold with software veto
10MeVee threshold L-arm
P. Kienle ECT* Antiproton Workshop 03.07.2006 22
Ni-Ni Collisions @ 1.9A GeV (FOPI)Λ-d Correlation from ppn K- (?)
N. Herrmann, Proc. EXA 05, Vienna 2005
M > M(KEK)
> (KEK)
Origin:Collision effects?
P. Kienle ECT* Antiproton Workshop 03.07.2006 23
Ni (2003) – Al (2005)- Λp Correlation (ppK-)? A Comparison
alignment of reaction plane
alignment of direction
Minv (+p) (GeV) Peak position not stable!Reflection of other resonances?Work in progress …
Ni+
Ni
Al+
Al
alignment of reaction plane
alignment of direction
P. Kienle ECT* Antiproton Workshop 03.07.2006 24
Λp Invariant Mass Spectrum from 3.5 GeV pC collisions
P. Kienle ECT* Antiproton Workshop 03.07.2006 25
p Correlations in 3.5 GeV pC Collissions
P. Kienle ECT* Antiproton Workshop 03.07.2006 26
Antikaons in Nuclei by Antiproton Annihilation
03 KppKHep
Production of ppK- cluster by the annihilation of the n in 3He and creation of a K- K0 pair
Missing mass spectroscopy of K0 + + -
Invariant mass of ppK- Λ + p decay
Exclusive formation and decay measurement in a 4-detector allowing K0 and Λ reconstruction
P. Kienle ECT* Antiproton Workshop 03.07.2006 27
Double Antikaon Production in Nuclei by Antiproton Annihilation
• The process:
• The cross section:
• The kinematics
• Double kaon production in nuclei:
With the binding energy exceeding ~ 225 MeV, double kaonic nuclei can be produced even by stopped antiprotons.
P. Kienle ECT* Antiproton Workshop 03.07.2006 28
Kaon Energy Correlation and Decay Density Distribution for BKK=0.4GeV
P. Kienle ECT* Antiproton Workshop 03.07.2006 29
Maximum Energy and Momentum of K+ as Function of the Binding Energy BKK
P. Kienle ECT* Antiproton Workshop 03.07.2006 30
Strangeness Exchange Reaction
P. Kienle ECT* Antiproton Workshop 03.07.2006 31
Mesons and Antiprotons in Nuclear Media
P. Kienle ECT* Antiproton Workshop 03.07.2006 32
Mesons in Nuclear Media
A.Sibirtsev et al. Eur .Phys.J A6 (1999) 351Hayashigaki PLB 487 (2000) 96Morath, lee Weise
P. Kienle ECT* Antiproton Workshop 03.07.2006 33
Subthreshold Production of D Mesons
P. Kienle ECT* Antiproton Workshop 03.07.2006 34
Antiprotons Bound in Nuclei
I.N.Mishustin, L.M.Saturov, Th.Bürvenich, H.Stöcker, W.Greiner,
Phys.Rev, C 71, 035201 (2005) and references shown there.
Exact G-Parity Symmetry predicts very deep potential:
-V-S ~ -650 MeV
However G-Parity is violated on the mean field level
Calculations using „weak G-parity, and rearrangement of nuclear structure by the strong attraction of a real antiproton
B ~ 1 GeV !, ~ 9-23 MeV, P~ 10-5 – 10-6 HESR:10-100 s-1
P. Kienle ECT* Antiproton Workshop 03.07.2006 35
Knock-out Reaction forpbar-Nucleus Boundstates Search
Aslanides et al, Nucl. Phys. A470,445 (1987)
Quasi-free scatt.
New experiment at a pbar storage ringwith internal target ? HpppHe
HepnpHe34
34
),(
),(
P. Kienle ECT* Antiproton Workshop 03.07.2006 36
Anti Lambda in Nuclei
P. Kienle ECT* Antiproton Workshop 03.07.2006 37
Antideuterons
P. Kienle ECT* Antiproton Workshop 03.07.2006 38
Antideuteron Breeder Scheme FAIR LOI by Kilian et al.
P. Kienle ECT* Antiproton Workshop 03.07.2006 39
Production of Antideuterons in Antiproton Rings
Proposal 1982 AIC @ GSI
P. Kienle ECT* Antiproton Workshop 03.07.2006 40
Can we Breed Anti 3He and More ?
In principle „Yes“ using the continuation of the breeding process using the anti protons colliding with antideuterons
03 Hedp
04 Hedd
P. Kienle ECT* Antiproton Workshop 03.07.2006 41
Fundamental Symmetries and Antihydrogen
P. Kienle ECT* Antiproton Workshop 03.07.2006 42
The Holy Grail of Symmetry Tests
Y.Yamaguchi; Prog. Th. Phys. 111 (2004) 545, „Riemannian QFT“ breaks Lorentz invariance, but not CPT Lorentz invariance tests are asked for!
P. Kienle ECT* Antiproton Workshop 03.07.2006 43
Antihydrogen 1s-2s (c2-c1) Transition
P. Kienle ECT* Antiproton Workshop 03.07.2006 44
Hyperfine Structure Test
P. Kienle ECT* Antiproton Workshop 03.07.2006 45
Trapped Antihydrogen
Measurement indicateT ~ 2400 K
Needed for trappingT ~ 0.5 K
Temperature
4 o
a e
F
Population of n-States
ρ mostly above 0.1 µm n > 15
P. Kienle ECT* Antiproton Workshop 03.07.2006 46
Hyperfine Structure of Antihydrogen
Accuracy of hydrogen hyperfine structure: 2mHz
Improvement:Sextupole race track storage ring,like NESTOR (W.Paul and U.Trinks)
P. Kienle ECT* Antiproton Workshop 03.07.2006 47
Equilibrium condition of antihydrogen with magnetic moment μ on a circular orbit with radius ρs in a toroidal sextupole field with magnetic field gradient ∂B/∂rlρs:
With the parameters of the NESTOR storage ring, ρ= 0.5 m, B=3.2 T and ∂B/∂r = 1.2 T/cm one can store antihydrogen with v= 600 m/s or equivalent to a temperature of 21 K (!!!) which is easier to produce than required for standard traps.
Sextupole Toroidal Racetrack Storage Ring for Hyperfine Structure Studies of Antihydrogen
sr
Bmv
s
2
P. Kienle ECT* Antiproton Workshop 03.07.2006 48
Sketch of a Lay out of a Sextupole Storage Ring for Antihydrogen HFS Studies
P. Kienle ECT* Antiproton Workshop 03.07.2006 49
P. Kienle ECT* Antiproton Workshop 03.07.2006 50
Dibaryon ppK- p Decay (FINUDA)
[Phys. Rev. Lett. 94, 212303 (2005)]
(detector resolution : 10 MeV/c2 FWHM)
fit region
A.N.Ivanov et al, arXiv:nucl-th/0512037 v1 (2005)B= -119 MeV; = 31 MeV; ~ 0.26 fm-3
P. Kienle ECT* Antiproton Workshop 03.07.2006 51
Density distribution of K nuclear clusters
JZ / Nov. 29, 2005
by observing the momentum correlation in their 3-body decay products (P. Kienle, Y. Akaishi, T. Yamazaki Phys. Lett. B 632 (2006) 187)
3-body decay correlation techniques may be also applied to study the structure of exotics
K-ppn + p + n
P. Kienle ECT* Antiproton Workshop 03.07.2006 52
Antiprotons in Nuclei