(DD0)-D-0 pi(+) mass distribution in the production of the T-cc exotic state

0551799 - ÚJF 2022 RIV US eng J - Journal Article
Feijoo, Aliau Eduardo Alberto - Liang, W. H. - Oset, E.
(DD0)-D-0 pi(+) mass distribution in the production of the T-cc exotic state.
Physical Review D. Roč. 104, č. 11 (2021), č. článku 114015. ISSN 2470-0010. E-ISSN 2470-0029
Institutional support: RVO:61389005
Keywords : channel study * mass distribution * data analysis
OECD category: Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Impact factor: 5.407, year: 2021
Method of publishing: Open access
https://doi.org/10.1103/PhysRevD.104.114015

We perform a unitary coupled channel study of the interaction of the D*D-+(0), D*D-0(+) channels and find a state barely bound, very close to isospin I = 0. We take the experimental mass as input and obtain the width of the state and the (DD0 pi-)-D-0+ mass distribution. When the mass of the T-cc state quoted in the experimental paper from raw data is used, the width obtained is of the order of the 80 keV, small compared to the value given in that work. Yet, when the mass obtained in an analysis of the data considering the experimental resolution is taken, the width obtained is about 43 keV and both the width and the (DD0 pi+)-D-0 mass distribution are in remarkable agreement with the results obtained in that latter analysis.
Permanent Link: http://hdl.handle.net/11104/0327014