HADRON REACTIONS AND SPECTROSCOPY
current and planned research conducted by the Polish groupsin international cooperation
ANDRZEJ MAGIERA
INSTITUTE OF PHYSICSJAGIELLONIAN UNIVERSITY
Institute of Physics, Jagiellonian University, KrakówInstitute of Nuclear Physics Polish Academy of Science, KrakówAGH, University of Science and Technology, KrakówCracow University of Technology, KrakówNational Centre for Nuclear Research, Warszawa, Otwock-Świerk, ŁódźUniversity of Warsaw, WarszawaWarsaw University of Technology, WarszawaUniversity of Silesia, KatowiceJan Kochanowski University, KielceUniversity of Wroclaw, Wrocław
WASA-at-COSY – FZ JülichKLOE-2 – INFN FrascatiHADES – GSINA61/SHINE – CERNPANDA – FAIR
nEDM – PSI VilligenJEDI – FZ Jülich
11 October 2013 NUPECC 2013, Cracow - A. Magiera - Hadron reactions and spectroscopy 1
11 October 2013 NUPECC 2013, Cracow - A. Magiera - Hadron reactions and spectroscopy 2
WASA-at-COSY CollaborationABC effect�� → �����
�� → ������� → �����
�� → ��� ���� �� → ��� ����
�� → ��
Charge Symmetry Breaking�� → ��� ���
�� → ��� ��
ηηηη-mesic nucleiππππ0, η, η, η, η and ωωωω decays
dacay mode physics decay mode physics
→ ������
→ ������
→ ������
ChPT – Dalitz plot parameters → �������� CP
→ ����� ChPT – box anomaly → ������ C
→ �����
→ ���/����transition FF → ������
�� → ������new physics? dark boson?
→ �������� double transition FF
[GeV]s2.2 2.4 2.6 2.8 3
[mb]
σ
0
0.2
0.4
0.6
�����
�
�∙ �����
� ∙ �����
11 October 2013 3
WASA-at-COSY CollaborationABC effect – a new resonance?
pn →→→→ R →→→→ ∆∆∆∆∆∆∆∆ →→→→ dππππ0ππππ0
∆
∆
dπ
πp
n
� = �.���, � = . ��
I(J ππππ) = 0(3+)
�� → � → ��
SAID with
���
resonance
SAID with
���
resonance
R
NUPECC 2013, Cracow - A. Magiera - Hadron reactions and spectroscopy
M. Bashkanov at Structure of Baryons 2013
11 October 2013 4
WASA-at-COSY CollaborationCharge Symmetry Breaking
� ��� 0
0 ��
��� ���
2� �
�� ���
2�� � �
1
3�
2 0
0 �1��
2� �
3�
2��
������� �
�1 0
0 1� �� �
1 0
0 �1
�� → � � !"�
�� → � � !"�
�� → � "��
� � ��� � ��
Charge Symmetry broken due toquark mass difference and their electric charge
for baryons analysis within ChPT with lagrangianpossessing the same symmetry
NUPECC 2013, Cracow - A. Magiera - Hadron reactions and spectroscopy
11 October 2013 5
KLOE & KLOE -2 Collaboration
• tests of discrete symmetries (CP, CPT, …)
• tests of quantum mechanics time-evolution of the entangled pairs of neutral kaons
• universality of the weak interaction ofleptons and quarkssearch for possible deviations from SM expectation of ΓΓΓΓ ( K±→→→→eνννν )/ΓΓΓΓ ( K→→→→µνµνµνµν ) to 0.4% precision
• investigations of the structure of the scalar mesons
• γγγγ−−−−γγγγ interaction
• study of the muon anomalous magnetic moment αµ
and the evolution of the fine structure constant αem
determination of the excitation function forthe e+e– → hadrons
• dark matter – search for narrow di-lepton resonances
DAΦΦΦΦNE e+e– collider at INFN Frascati
���������������������
KLOE →→→→ KLOE-2
2.5 fb–1 →→→→ ~10 fb–1
φφφφ ~ 8 · 109 →→→→ φφφφ ~ 3 · 1010
NUPECC 2013, Cracow - A. Magiera - Hadron reactions and spectroscopy
11 October 2013 6
KLOE CollaborationCP violation in KS decay
KS → → → → ππππ0 ππππ0 ππππ0 CP(K
S) = 1 CP(ππππ0 ππππ0 ππππ0) = -1
e+e– →→→→ φφφφ→→→→ KSK
L �� �� → ��
< .�� ∙ ���
KS
tagging by KL
KL
tagging by KS
→→→→ π+π–
NUPECC 2013, Cracow - A. Magiera - Hadron reactions and spectroscopy
no simultaneous decays (∆t=0) in the same final state due to the destructive quantum interference
11 October 2013 7
KLOE & KLOE -2 CollaborationKaon interferometry: � → ���� → ��������
KLOE
decoherence parameter
ζ = (1.4 ± 9.5 ± 3.8) ·10-7
��
ππππ
ππππ
ππππ
ππππ t2 t1
∆∆∆∆t = t1 - t2
���
NUPECC 2013, Cracow - A. Magiera - Hadron reactions and spectroscopy
Au+Au1.25 AGeV
11 October 2013 8
HADES Collaboration
� beams from SIS18: protons, nuclei , pions
2.0 GeV < � < 3.2 GeV
� spectrometer with high invariant mass resolution - 2% at ρρρρ////ωωωω
� versatile detector for rear probes :
� dielectrons (e+,e-)
� strangeness: ΛΛΛΛ, Κ, Κ, Κ, Κ±±±±,0,0,0,0, , , , ΣΣΣΣ(1385), (1385), (1385), (1385), ΞΞΞΞ−−−−, , , , φφφφ
Hadron structure
• ΛΛΛΛ(1405) production
• EM Transition Form Factors of hadrons in medium
• kaons(Κ(Κ(Κ(Κ0000) , ) , ) , ) , ΞΞΞΞ(1321), (1321), (1321), (1321), φφφφ production in A+A
• ρρρρ////ωωωω mesons in NN and p+A
Side View
START
FW
NUPECC 2013, Cracow - A. Magiera - Hadron reactions and spectroscopy
11 October 2013 9
HADES CollaborationΛΛΛΛ(1405) doorway into bound ���
T. Hyodo, W. Weise PRC 77 (2008) 03524
ΛΛΛΛ(1405) – bound #$% system, resonance with 2 poles?
• pole shift?• interference with non-resonant ΣπΣπΣπΣπ• lower pole stronger?
ΛΛΛΛ(1405) pole
coupled channel calculation based on chiral dynamics(Oset, Magas, Weise, Hyodo, Lutz)
two pole structure as result of couplingbetween KN (bound state) and ΣπΣπΣπΣπ resonance
� + � → & �'() + �+*�
n+�� �⁄
+� �⁄+ �� �⁄
NUPECC 2013, Cracow - A. Magiera - Hadron reactions and spectroscopy
∆∆∆∆+
p
e+γγγγ*
p
p
p
11 October 2013 10
HADES CollaborationEM Transition Form Factor
main source: ∆∆∆∆→→→→pe+e– Dalitz decay
ππππ0 , ∆∆∆∆ – 1 pion exclusive production
BR (∆→∆→∆→∆→Ne+e–) ≅≅≅≅ 4*10-5
pp→→→→ppe+e– @3.5 GeV
• resonance contribution estimated fromppππππ0 and pnππππ+ channels
• resonances (R) with mass up to 2 GeV included
• calculations with point-like RNγγγγ* (QED)does not describe data
• emTFF(Me+e-) dependence very importantVector Meson contribution !
NUPECC 2013, Cracow - A. Magiera - Hadron reactions and spectroscopy
11 October 2013 11
NA61/SHINE Collaborationinelastic p+p interactions at beam momenta of 13 – 158GeV/c
as a reference for A+A and p+A collisions data
Observables include:
●inclusive spectra:�,*, �,-, #∗, ., &, *��
●two-particle correlations●multiplicity and transverse momentum fluctuations
NUPECC 2013, Cracow - A. Magiera - Hadron reactions and spectroscopy
antiProton Annihilations at Darmstadt
Polish participants /involvement
•Jagiellonian University, KrakówForward Tracker: straw detectors + digitizing electronics
• AGH, University of Science and Technology, KrakówFront end electronics for the Forward Tracker
• Krakow University of TechnologySupport structures for the Forward Spectrometer
• Institute of Nuclear Physics PAN, KrakówRead out electronics for the Central Tracker
• National Centre for Nuclear Research, WarszawaElectromagnetic Calorimeter, GEM detectors, slow control
Front-end card with ASICs developed at AGH
Prototype wire chamber built at UJ
11 October 2013 12
PANDA Collaboration
NUPECC 2013, Cracow - A. Magiera - Hadron reactions and spectroscopy
JEDIJülich Electric Dipole Moment Investigations
13
nEDM &JEDI Collaborations
1. „freeze” horizontal spin of polarized charged particle beam in storage ring along the momentum
2. apply a radial electric field3. watch for development of vertical polarization
polarimetryspin coherence timespin tune
NUPECC 2013, Cracow - A. Magiera - Hadron reactions and spectroscopy
p, d, 3He EDMpure / ring//0 ring
pure 0 ring
Phase I – 5·10-27ecm, Phase II – 5·10-28
ecm
nEDM@PSI
Now at COSY COSYprecursor experiment
first direct measurementsfor p, d ~10-24 ecm
dedicated SR ~10-29 ecm
pEDMdEDM
nEDMEDMs form an important class of flavour-diagonalCP-odd observables, testing/constraining new physics(motivated by the need of baryogenesis). …………….EDMs probe PeV sfermion scales characteristicof the large observed Higgs mass.
11 October 2013
Adam Ritz, PSI2013