Transcript of Mikhail Bashkanov Dibaryons at COSY Wasa-at-COSY.
- Slide 1
- Mikhail Bashkanov Dibaryons at COSY Wasa-at-COSY
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- Types of particles/resonances color anticolor white Meson
Baryon Mikhail Bashkanov "Dibaryons"2
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- Possible particles Pentaquark Meson-Baryon molecule Hexaquark
Baryon-Baryon molecule Mikhail Bashkanov "Dibaryons"3 Tetraquark
Meson-Meson molecule
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- Deuteron to Deltaron 4 Threshold pn 2.2 MeV deuteron 80 MeV d*
I(J p ) = 0(1 + ) I(J p ) = 0(3 + ) u u u d d d u u u d d d
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- WASA 4 Detector p d n
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- 6 d* resonance 70 MeV Total cross section pn d 0 0 P. Adlarson
et. al Phys. Rev. Lett. 106:242302, 2011 NN*(1440)
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- 7 Angular distribution in the peak J=1 J=3 P. Adlarson et. al
Phys. Rev. Lett. 106:242302, 2011
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- 8 The extracted properties of the new particle pn dibaryon d d
p n I(J p ) = 0(3 + ) Mikhail Bashkanov "Dibaryons"
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- 9 Total cross section pN d P. Adlarson et. al Phys. Lett. B721
(2013) 229
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- 10
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- 11 From fusion to free case pn d* d d p n pn d* NN p n N N Fldt
& Wilkin, PLB 701 (2011) 619 Fldt & Wilkin, PLB 701 (2011)
619 Albaladejo & Oset, Phys.Rev. C88 (2013) 014006 Albaladejo
& Oset, Phys.Rev. C88 (2013) 014006
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- 12 pn pn 0 0 d* Conventional process Conventional process +d*
d* P. Adlarson et al., Phys.Lett. B743 (2015) 325-332
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- Dibaryon non-fusion decays 13 PLB 743 (2015) 325 d* PRC 88
(2013) 055208HADES arXiv:1503.04013arXiv:1503.04013
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- Dibaryon hadronic decays 14 pn d*(2380) PRL 112 (2014) 202301
PRC 90, (2014) 035204 PLB 721 (2013) 229 PRL 106 (2011) 242302 PRC
88 (2013) 055208 PLB 743 (2015) 325 WASA data d*
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- 15 The decay modes of the dibaryon ChannelPublications d M.
Bashkanov et. al Phys.Rev.Lett. 102 (2009) 052301 P. Adlarson et.
al Phys. Rev. Lett. 106:242302, 2011 P. Adlarson et. al Phys.Lett.
B721 (2013) 229-236 d P. Adlarson et. al Phys.Lett. B721 (2013)
229-236 pp P. Adlarson et. al Phys. Rev. C 88, 055208 np P.
Adlarson et. al Phys.Lett. B743 (2015) 325 npA. Pricking, M.
Bashkanov, H. Clement. arXiv:1310.5532 P. Adlarson et al. Phys.
Rev. Lett. 112, 202301, (2014) P. Adlarson et al. Phys. Rev. C 90,
035204, (2014) pn e + e - M. Bashkanov, H. Clement, Eur.Phys.J. A50
(2014) 107 3 He M. Bashkanov et. al Phys.Lett. B637 (2006) 223-228
P. Adlarson et. al Phys. Rev. C 91 (2015) 1, 015201 4 He P.
Adlarson et. al Phys.Rev. C86 (2012) 032201 + activities from other
groups Mikhail Bashkanov "Dibaryons" M. Bashkanov, Stanley J.
Brodsky, H. Clement Phys.Lett. B727 (2013) 438-442
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- 16
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- 17 pn d* d d p n pn d* NN p n N N pn d* pn p n n p
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- 18 Expectations p n n p SAID SAID with resonance A. Pricking,
M. Bashkanov, H. Clement: arXiv:1310.5532
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- 19 p n n p SAID A. Pricking, M. Bashkanov, H. Clement:
arXiv:1310.5532
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- 20 p n n p SAIDNew SAID solutions P. Adlarson et al. Phys. Rev.
Lett. 112, 202301, (2014)
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- Dimensionless partial wave amplitudes 21 Re Im SP07 SP14
Dimensionless partial wave amplitudes Resonance in the pn system P.
Adlarson et al. Phys. Rev. Lett. 112, 202301, (2014)
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- 22 Argand plot P. Adlarson et al. Phys. Rev. Lett. 112, 202301,
(2014) P. Adlarson et al. Phys. Rev. C 90, 035204, (2014)
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- 23 Argand plots P. Adlarson et al. Phys. Rev. Lett. 112,
202301, (2014) P. Adlarson et al. Phys. Rev. C 90, 035204,
(2014)
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- 24
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- Deuteron 25 n p np L=2 0.9 fm 4 fm L=0
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- Deltaron vs Hexaquark 26 L=2 0.9 fm L=0 1.2 fm 0.7 fm F. Huang
et al, arXiv:1408.0458
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- d*(2380) internal structure and the ABC effect 27 L=2 0.9 fm
L=0 1.2 fm M. Bashkanov et al, arXiv:1502.07500
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- 28
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- Mirror dibaryon 29 I(J p ) = 0(3 + ) d* u u u d d d I(J p ) =
3(0 + ) u u u u u u Freeman J. Dyson, Nguyen-Hue Xuong Phys. Rev.
Lett. 13(1964) 815 Avraham Gal, Humberto Garcilazo Nucl. Phys.
A928, (2014), 73
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- * *+ * * *+ * * *+ * ** ++ ---- d* How many ways can you
combine 6q? Isospin Strangeness
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- Z=+4 dibaryon isospin coefficients p p p p I
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- 34 p p p p p p p p p p p p
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- 35 Double-Roper
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- Charge Z=+4 dibaryon upper limit 36
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- NN vs 37 Threshold pn pn 2.2 MeV 66 keV deuteron ? 80 MeV d*
Z=+4
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- * *+ * * *+ * * *+ * ** ++ ---- d* How many ways can you
combine 6q? Isospin Strangeness
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- d*(2380) SU(3) multiplet * * 39 J p = 3 +
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- Strange Dibaryon Isospin Strangeness * *+ * * *+ * d*
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- d*(2380) in photoproduction? 41 R. Gilman and F. Gross
nucl-th/0111015 (2001) T. Kamae, T. Fujita Phys. Rev. Lett. 38, Feb
1977, 471 H. Ikeda et al., Phys. Rev. Lett. 42, May 1979, 1321 d*
I(J p ) = 0(3 + )
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- The benchmark measurement 42 Newly installed Edinburgh
polarimeter M.H. Sikora, D.P. Watts et al, Phys.Rev.Lett. 112
(2014) 022501 Mikhail Bashkanov "Dibaryons" Measure polarization of
both proton and neutron ! d*
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- Conclusion The very first dibaryon d*(2380) is established Mass
Width Quantum numbers Main decay branches Structure: Hexaquark vs
Molecule? No convincing signs for the mirror dibaryon (charge Z=+4)
so far Size and shape of the conventional background? Mirror
multiplet (28-plet) is likely to be unbound 43
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- 45 d d Mikhail Bashkanov "Dibaryons" A. Fix, H. Arenhoevel.
Eur. Phys. J. A 25, 115, (2005).
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- Z=+4 dibaryon N N p p p p WASA, HADES
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- 47
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- 48 M(GeV)12345exp 2.352.3612.452.38 2.352.833unbound2.692.40
1.Dyson-Xuong, PRL 13 (1964) 815 2.Mulders-Aerts-de Swart, PRD 21
(1980) 2653 3.Oka-Yazaki, PLB 90 (1980) 41. 4.Mulders-Thomas, JPG 9
(1983) 1159. 5.A. Gal, H. Garcilazo Nucl.Phys. A928 (2014)
73-88