1. IMPACTS In-Medium Properties of Antikaons and Charm Topical Studies
WP3
Johann Marton
HPH Meeting, Bochum March 26, 2014

2. HPH Meeting, Bochum March 26, 2014
Outline
Participants
Objectives
Workpackages, selected topics
Role of participants
Deliverables
Expected impact
Financial contribution
Summary
HPH Meeting, Bochum March 26, 2014

3. HPH Meeting, Bochum March 26, 2014
Participants
HPH Meeting, Bochum March 26, 2014

4. HPH Meeting, Bochum March 26, 2014
Participants
15 participating institutions, 10 from 5 EU countries: Austria, Czech Republic, Germany, Italy, Poland
HPH Meeting, Bochum March 26, 2014

5. HPH Meeting, Bochum March 26, 2014
Objectives
Definition and coordination of studies on strong interaction of hadrons containing strangeness or charm in experiments and theory
Networking for improving our understanding the low- energy strong interaction beyond up/down quarks
Basis in Europe with outreach to groups outside Europe – strong impact on world-wide strategy, i.e. activities of Japanese groups, participation of European groups in research in Japan (e.g. J-PARC), participation of Japanese groups in research in Europe (e.g. DAFNE)
HPH Meeting, Bochum March 26, 2014

6. HPH Meeting, Bochum March 26, 2014
6 Work packages WP1-WP6
WPs characterized by joint endeavor of experimentalists and theoreticians
Theoretical and experimental studies on the strong interaction with strangeness
Role of strangeness in compact stars
The antikaon in the nuclear medium and the nature of sub-threshold resonances
From strangeness to charm in-medium studies
Bound few- nucleon systems
Dissemination and Outreach
HPH Meeting, Bochum March 26, 2014

7. HPH Meeting, Bochum March 26, 2014
WP1 – Theoretical and experimental studies on the strong interaction with strangeness
Kaonic deuterium (K-d) x-ray spectroscopy – first data on hadronic shift/width
With these data extraction of the isospin scattering lengths
New measurements with ultrahigh-energy-resolution detectors
HPH Meeting, Bochum March 26, 2014

8. HPH Meeting, Bochum March 26, 2014
Kaonic deuterium
1st measurement of
hadronic 1s state shift/width
Kaonic ?
Kaon beam
Kaons at higher momentum ( MeV/c)
needs degrader
Tracking
With 30 kW beam power
K- per day
0.03% per kaon pair stopping in gas (660 MeV/c)
>300 SDDs
DAFNE – ideal for kaonic atoms
Kaon source (Φ decay in K-K+)
Low-energy kaons (127 MeV/c) ideal for stopping
No tracking
With 10 pb-1 per day
K- per day isotropically
2% stopping in gas per kaon pair
144 SDDs from SIDDHARTA
HPH Meeting, Bochum March 26, 2014

9. HPH Meeting, Bochum March 26, 2014
M. Mai/Bonn
HPH Meeting, Bochum March 26, 2014

10. HPH Meeting, Bochum March 26, 2014
New experiments - microcalorimeter
Study of 2 transitions in the same kaonic atom for
separating one-nucleon 1N) from multi-nucleon (mN) processes
using micro-calorimeters
Further applications of
microcalorimeters for precision x-ray studies:
K-He-3,4 2p-shift/width
Kaon mass
HPH Meeting, Bochum March 26, 2014

11. HPH Meeting, Bochum March 26, 2014
WP2- The antikaon in the nuclear medium and the nature of sub-threshold resonances
New studies on sub-threshold resonances (e.g. Λ(1405)
New experiments on strangeness production in pion-induced reactions
HPH Meeting, Bochum March 26, 2014

12. WP2: Properties of hadronic resonances in theory and experiment
Λ(1405) one- or two-pole object??
PDG, Phys. Rev. D86 (2012)
T. Hyodo, D. Jido, Prog. Part. Nucl. Phys. 67 (2012) 55-98
HPH Meeting, Bochum March 26, 2014

13. HPH Meeting, Bochum March 26, 2014
Studies at LNF
Unique possibilities at DAFNE/LNF employing a mono-energetic source of K- low energy!) from Φ-meson decay
AMADEUS/KLOE as a laboratory to study the nature of Λ(1405) and K- one and two nucleon absorption reactions; studies of charged and neutral decay products
Pre-AMADEUS: Analysis of experimental data from KLOE (K- reactions in the drift chamber)
In the coming 3 years: dedicated AMADEUS
HPH Meeting, Bochum March 26, 2014

14. Pion-induced reactions (HADES)
HADES at GSI
Pion beam at GSI: ≈106 particles/s
Using liquid target (π-+p  ΛK, ΣK, Φn)
Measurement of the elementary production cross section
Systematic study of possible appearance of resonances
PWA methods will be used
Using solid targets of different materials:
Production of kaons, antikaons, Λ,Φ
In-medium properties of these hadrons in cold nuclear matter
Antikaon absorption – also related to antikaon absorption studies within KLOE/AMADEUS
HPH Meeting, Bochum March 26, 2014

15. WP3 – Bound few-nucleon systems
New studies on kaonic quasi-bound nuclear systems in experiment and theory
New analysis methods for kaonic nuclear bound state search
HPH Meeting, Bochum March 26, 2014

16. Quasi-bound kaonic nuclei ?
Decay widths and binding energies from experiment and theory:
The present knowledge
from experiment and theory is still insufficient to
make a clear statement about quasi-bound kaonic nuclear systems
Experiments, refined data
analysis and theoretical studies are needed
HPH Meeting, Bochum March 26, 2014

17. HPH Meeting, Bochum March 26, 2014

18. Multi-kaonic quasi bound states (T. Yamazaki)?
Controversially discussed?
A. Gal et al.
A. Gal, et al., arXiv: v1 (2014)
HPH Meeting, Bochum March 26, 2014

19. HPH Meeting, Bochum March 26, 2014

20. In-medium studies of antikaons and eta‘s
A. Gal et al.
Sub-threshold meson-baryon dynamics can be demonstrated in bound state calculations within in-medium models of antikaon-nucleon and eta-nucleon interactions.
Sub-threshold energies probed
In kaonic atoms of Ni and Pb as
function of nuclear density.
This energy region is expected to be dominated by the Λ(1405) resonance.
A. Gal, et al., arXiv: v1 (2014)
HPH Meeting, Bochum March 26, 2014

21. Studies on the binding energy and width of Kbar nuclear states
J. Mares et al.
Studies on the binding energy and width
of Kbar nuclear states
A. Gal, et al., arXiv: v1 (2014)
HPH Meeting, Bochum March 26, 2014

22. Studies on the binding energy of eta nuclear states
j. Mares et al.
Studies on the binding energy of eta nuclear states
A. Gal, et al., arXiv: v1 (2014)
HPH Meeting, Bochum March 26, 2014

23. Experiments on η‘ bound states in the nuclear medium
K. Suzuki et al.
Experiments on η‘ bound states in the nuclear medium
HPH Meeting, Bochum March 26, 2014

24. WP4 - Role of strangeness in compact stars
A. Schmitt/TU Wien
HPH Meeting, Bochum March 26, 2014

25. HPH Meeting, Bochum March 26, 2014

26. WP5 – From strangeness to charm in-medium studies
A. Gillitzer/Jülich
Perspectives of antiproton-nucleus reactions in PANDA
HPH Meeting, Bochum March 26, 2014

27. HPH Meeting, Bochum March 26, 2014
Nuclear bound states of charmed hadrons?
HPH Meeting, Bochum March 26, 2014

28. WP6 – Dissemination and Outreach
IMPACTS Meetings approx. 1 meeting/y at different venues
Meetings at ECT*
Outreach in „Science Night“ etc.
 Schools of Physics (schools in 2-3 years period)
Topical conferences like EXA2017
Network Webpage
Video presentation
HPH Meeting, Bochum March 26, 2014

29. Role of participants in the WPs
HPH Meeting, Bochum March 26, 2014

30. HPH Meeting, Bochum March 26, 2014
Expected Impact
For science
Understanding of one of the fundamental interactions (strong interaction) with strange/charm quark
Refine the theory and experimental techniques
For industry and business
Detector technology for medicine, material sciences. E.g. SiPMs for nuclear imaging (TOF-PET)
For society
Improvement of skills of young people in technology, computing and collaborative work
Medical detector applications
HPH Meeting, Bochum March 26, 2014

31. HPH Meeting, Bochum March 26, 2014
Deliverables
HPH Meeting, Bochum March 26, 2014

32. Financial Contribution
HPH Meeting, Bochum March 26, 2014

33. HPH Meeting, Bochum March 26, 2014
Summary
The activities of the IMPACTS network are concentrated on developing new strategies in experimental and theoretical studies, to attack the open problems in the field of in-medium properties of hadrons with strangeness/charm.
Inherently connected are the developments of new experimental methods and techniques - they can profit from this coordinated network (interconnections to JRAs).
The basis of the networking activities are European infrastructures (FAIR, LNF/INFN, GSI, ECT*) but IMPACTS has a substantial involvement of a major hadron physics research facility (J-PARC) in Japan. Thus, it contributes to strengthening the partnership between European and non-European institutes.
Extremely important is the impact on the society in the context of a broad range education of young researchers since IMPACTS is focused on modern physics in the transient range between nuclear and particle physics with partly involving atomic physics.
HPH Meeting, Bochum March 26, 2014

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Spare
HPH Meeting, Bochum March 26, 2014

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Risk Assessment
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GANT Chart
HPH Meeting, Bochum March 26, 2014

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38. Motivation for K-d measurement
SIDDHARTA – most important result on K-p by
x-ray spectroscopy of atomic transitions to 1s
SIDDHARTA – First exploratory experiment on K-d
hadronic shift and width of 1s state –
no experimental data up-to-now!
New SDD x-ray detectors  connection to JRA
Study of K-n interaction
Isospin-dependent scattering lengths from KH and KD
K-p interaction at low energy is well understood, but K-d provide the missing information
Important information for theory
Electromagnetic cascade
Isospin Scattering length (combined with K-p data and theory)
Probing the recent theoretical expectations
M. Bazzi et al. [SIDDHARTA], Physics Letters B 704 (2011) 113–117
HPH Meeting, Bochum March 26, 2014

39. HPH Meeting, Bochum March 26, 2014

40. X-ray microcalorimeter
a thermal detector measuring the energy
of an incident x-ray photon as a temperature rise
Temperature rise
= E / C ( ~ 1 mK )
Decay time constant
= C / G ( ~ 100 μs )
Absorber with larger “Z” (to stop the high energy x-rays)
e.g., Absorber : Au (0.3 mm×0.3 mm wide, 300 nm thick)
Thermometer : thin bilayer film of Ti (40nm) and Au(110 nm)
HPH Meeting, Bochum March 26, 2014

41. Simple simulation K-4He
by H. Tatsuno
w/ GEANT4
Top view
K-4He x-rays from Liq. 4He
TES : 5eV FWHM
(Bi 20 mm2, 5 um thick)
Silicon Drift Detector(SDD) :
190 eV FWHM
(Si 100 mm2, 400um thick)
TES
6cm
K- beam
Compton scattered
X-rays
Liq. He (~ 0.1 L)
well separated from
“Compton scattered X-rays”
and “Fe Ka energy”.
Both have been serious problems
in the prev. experiments.
Fe Kα
(e.g., due to Fe
material
contamination)
HPH Meeting, Bochum March 26, 2014

42. KLOE data analysis - Pre-AMADEUS
HPH Meeting, Bochum March 26, 2014

43. HPH Meeting, Bochum March 26, 2014
Λ(1405) in pion reaction
GSI
HPH Meeting, Bochum March 26, 2014

44. HPH Meeting, Bochum March 26, 2014
DISTO
Comparison pp reaction at
2.85 GeV and 2.50 GeV
DISTO: New analysis work is planned:
full acceptance and
efficiency corrections
PWA?
HPH Meeting, Bochum March 26, 2014

45. HPH Meeting, Bochum March 26, 2014
P. Bühler/SMI
HPH Meeting, Bochum March 26, 2014

46. Multinucleon components in the KbarN in-medium amplitudes
In-Medium amplitude F as a function of density for kaonic nickel.
“full” kaonic-atom globally
fitted amplitude
“1N” amplitude in the absence of many-nucleon contributions.
A. Gal, et al.,
arXiv: v1 (2014)
HPH Meeting, Bochum March 26, 2014