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Three methods to detect the predicted D(D)over-bar scalar meson X(3700)

AutorXiao, C. W.; Oset, Eulogi
Palabras claveChiral Perturbation-Theory
Scattering
Fecha de publicación1-abr-2013
EditorSpringer
CitaciónEUROPEAN PHYSICAL JOURNAL A (49): 4 (2013)
ResumenIn analogy to the f(0)(500), which appears as a pi pi resonance in chiral unitary theory, and the f(0)(980), which appears as a quasibound K (K) over bar state, the extension of this approach to the charm sector also predicts a quasibound D (D) over bar state with mass around 3720 MeV, named as X(3700), for which some experimental support is seen in the e(+)e(-) -> J/psi D (D) over bar reaction close to the D (D) over bar threshold. In the present work we propose three different experiments to observe it as a clear peak. The first one is the radiative decay of the psi(3770), psi(3770) -> gamma X(3700) -> gamma eta eta'. The second one proposes the analogous reaction psi(4040) -> gamma X(3700) -> gamma eta eta' and the third reaction is the e(+)e(-) -> J/psi X(3700) -> J/psi eta eta'. Neat peaks are predicted for all the reactions and the calculated rates are found within measurable range in present facilities.
Versión del editorhttp://dx.doi.org/10.1140/epja/i2013-13052-5
URIhttp://hdl.handle.net/10261/108583
DOI10.1140/epja/i2013-13052-5
ISSN1434-6001
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