Scalar mesons in η′ → ηπ
0
π
0 decay

• Authors: Sergey Donskov , Anatoly Likhoded , Alexey Luchinsky , Vladimir Samoylenko
• Languages of publication: EN

Abstracts

EN

The decay η′ → ηπ
0
π
0 is studied in the framework of isobar model. It is shown, that good agreement with the experiment is achieved if α
0- and σ-meson contributions are taken into account. The contribution of α
0-meson is dominant, but σ-meson is necessary to reproduce the form of the Dalitz plot. Instead of the usual Breit-Wigner form of σ-meson propagator we use parametrization of the ππ-amplitude, which satisfies analyticity, crossing, unitarity and chirality constraints. This amplitude has a pole in the complex plane, which corresponds to σ-meson and describe experimental data on ππ-scattering in K
e4 decay.

Keywords

EN

η′-meson decay; σ-meson; final state interaction

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2010
• Volume: 8
• Issue: 3
• Pages: 393-399

Dates

published

1 - 6 - 2010

online

24 - 4 - 2010

Contributors

author

Sergey Donskov

• Institute for High Energy Physics, Pobedy str. 1, 142280, Protvino, Russia

author

Anatoly Likhoded

• Institute for High Energy Physics, Pobedy str. 1, 142280, Protvino, Russia

author

Alexey Luchinsky

• Institute for High Energy Physics, Pobedy str. 1, 142280, Protvino, Russia

author

Vladimir Samoylenko

• Institute for High Energy Physics, Pobedy str. 1, 142280, Protvino, Russia

References

• [1] D. Alde et al., Phys.Lett. B 177, 115 (1987)
• [2] D. Alde et al., Phys. Atom. Nucl.+ 45, 117 (1987)
• [3] A. H. Fariborz, J. Schechter, Phys. Rev. D 60, 034002 (1999) http://dx.doi.org/10.1103/PhysRevD.60.034002[Crossref]
• [4] A. M. Blick et al., Phys. Atom. Nucl.+ 88, 123 (2008)
• [5] V. Dorofeev et al., Phys. Lett. B 651, 22 (2007) http://dx.doi.org/10.1016/j.physletb.2007.05.060[Crossref]
• [6] D. P. Majumdar, Phys. Rev. Lett. 21, 502 (1968) http://dx.doi.org/10.1103/PhysRevLett.21.502[Crossref]
• [7] J. A. Cronin, Phys. Rev. 161, 1483 (1967) http://dx.doi.org/10.1103/PhysRev.161.1483[Crossref]
• [8] J. Schwinger, Phys. Rev. 167, 1432 (1968) http://dx.doi.org/10.1103/PhysRev.167.1432[Crossref]
• [9] P. Di Vecchia, F. Nicodemi, R. Pettorino, G. Veneziano, Nucl. Phys. B 181, 318 (1981) http://dx.doi.org/10.1016/0550-3213(81)90356-4[Crossref]
• [10] N. A. Tornqvist, Z. Phys. C Part. Fields 68, 647 (1995) http://dx.doi.org/10.1007/BF01565264[Crossref]
• [11] C. A. Singh, J. Pasupathy, Phys. Rev. Lett. 35, 1193 (1975) http://dx.doi.org/10.1103/PhysRevLett.35.1193[Crossref]
• [12] C. A. Singh, J. Pasupathy, Phys. Rev. Lett. 35, 1748 (1975) (erratum) http://dx.doi.org/10.1103/PhysRevLett.35.1748.3[Crossref]
• [13] J. Schechter, Y. Ueda, Phys. Rev. D 23, 2874 (1971) http://dx.doi.org/10.1103/PhysRevD.3.2874[Crossref]
• [14] N. G. Deshpande, T. N. Truong, Phys. Rev. Lett. 41, 1579 (1978) http://dx.doi.org/10.1103/PhysRevLett.41.1579[Crossref]
• [15] J. R. Batley et al., Eur. Phys. J. C 54, 411 (2008) http://dx.doi.org/10.1140/epjc/s10052-008-0547-0[Crossref]
• [16] F. J. Yndurain, R. Garcia-Martin, J. R. Pelaez, Phys. Rev. D 76, 074034 (2007) http://dx.doi.org/10.1103/PhysRevD.76.074034[Crossref]
• [17] I. Caprini, Phys. Rev. D 77, 114019 (2008) http://dx.doi.org/10.1103/PhysRevD.77.114019[Crossref]
• [18] I. Caprini, G. Colangelo, H. Leutwiyler, Phys. Rev. Lett. 96, 132001 (2006) http://dx.doi.org/10.1103/PhysRevLett.96.132001[Crossref]
• [19] S. L. Adler, Phys. Rev. B 137, 1022 (1965) http://dx.doi.org/10.1103/PhysRev.137.B1022[Crossref]
• [20] S. L. Adler, Phys. Rev. B 139, 1638 (1965) http://dx.doi.org/10.1103/PhysRev.139.B1638[Crossref]
• [21] F. Ambrosino et al., arXiv:0904.2539 [hep-ex]
• [22] T. Feldman, P. Kroll, B. Stech, Phys. Lett. B 449, 339 (1999) http://dx.doi.org/10.1016/S0370-2693(99)00085-4[Crossref]

Identifiers

DOI

10.2478/s11534-009-0088-7