@article{5c0c9977b2894a3d9da01c82d3952867,
title = "Examination of the production of an isotensor dibaryon in the pp→ppπ+π- reaction",
abstract = "The quasifree pp→ppπ+π- reaction has been measured by means of pd collisions at Tp=1.2GeV using the WASA detector setup at COSY enabling exclusive and kinematically complete measurements. Total and differential cross sections have been extracted for the energy region Tp=1.08-1.36 GeV (s=2.35-2.46GeV) covering thus the regions of N∗(1440) and Δ(1232)Δ(1232) resonance excitations. Calculations describing these excitations by t-channel meson exchange as well as isospin relations based on the pp→ppπ0π0 data underpredict substantially the measured total cross section. The calculations are also at variance with specific experimental differential cross sections. An isotensor ΔN dibaryon resonance with I(JP)=2(1+) produced associatedly with a pion is able to overcome these deficiencies. Such a dibaryon was predicted by Dyson and Xuong [Phys. Rev. Lett. 13, 815 (1964)PRLTAO0031-900710.1103/PhysRevLett.13.815] and more recently calculated by A. Gal and H. Garcilazo [Nucl. Phys. A 928, 73 (2014)NUPABL0375-947410.1016/j.nuclphysa.2014.02.019].",
keywords = "DOUBLE-CHARGE-EXCHANGE, PROTON-PROTON COLLISIONS, DOUBLE-PIONIC FUSION, CROSS-SECTIONS, 2-PION PRODUCTION, SINGLE-PION, EXCITATION, SCATTERING, RESONANCE, ENERGIES",
author = "{The WASA-at-COSY Collaboration} and P. Adlarson and W. Augustyniak and W. Bardan and M. Bashkanov and Bergmann, {F. S.} and M. Ber{\l}owski and A. Bondar and M. B{\"u}scher and H. Cal{\'e}n and I. Ciepa{\l} and H. Clement and E. Czerwi{\'n}ski and K. Demmich and R. Engels and A. Erven and W. Erven and W. Eyrich and P. Fedorets and K. F{\"o}hl and K. Fransson and F. Goldenbaum and A. Goswami and K. Grigoryev and L. Heijkenskj{\"o}ld and V. Hejny and N. H{\"u}sken and L. Jarczyk and T. Johansson and B. Kamys and G. Kemmerling and A. Khoukaz and O. Khreptak and Kirillov, {D. A.} and S. Kistryn and H. Kleines and B. K{\l}os and W. Krzemie{\'n} and P. Kulessa and A. Kup{\'s}{\'c} and K. Lalwani and D. Lersch and B. Lorentz and A. Magiera and R. Maier and P. Marciniewski and B. Maria{\'n}ski and Morsch, {H. P.} and P. Moskal and H. Ohm and W. Parol",
year = "2019",
month = feb,
day = "4",
doi = "10.1103/PhysRevC.99.025201",
language = "English",
volume = "99",
journal = "Physical Review C",
issn = "2469-9985",
publisher = "American Physical Society",
number = "2",
}