Isotensor Dibaryon in the pp →ppπ+π- Reaction?

WASA-at-COSY Collaboration

Результат исследования: Научные публикации в периодических изданияхстатья

9 Цитирования (Scopus)

Аннотация

Exclusive measurements of the quasifree pp→ppπ+π- reaction have been carried out at WASA@COSY by means of pd collisions at Tp=1.2 GeV. Total and differential cross sections have been extracted covering the energy region Tp=1.08-1.36 GeV, which is the region of N∗(1440) and Δ(1232)Δ(1232) resonance excitations. Calculations describing these excitations by t-channel meson exchange are at variance with the measured differential cross sections and underpredict substantially the experimental total cross section. An isotensor ΔN dibaryon resonance with I(JP)=2(1+) produced associatedly with a pion is able to overcome these deficiencies.

Язык оригиналаанглийский
Номер статьи052001
Число страниц6
ЖурналPhysical Review Letters
Том121
Номер выпуска5
DOI
СостояниеОпубликовано - 1 авг 2018

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