Tests of the nature of the σ(0.6) from D(s) semileptonic decays

✍ Scribed by Hans Guenter Dosch; Stephan Narison

• Book ID: 104354457
• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 398 KB
• Volume: 121
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/s0920-5632(03)01824-3

✦ Synopsis

We quantitatively study the effects, beyond the SVZ-expansion, due to instanton and tachyonic gluon mass, to the scalar isoscalar two-point functions supporting the fact that the QCD spectral sum do not favour the 'LLu + dd interpretation of the broad and low mass 40.6).

Then, we emphasize that a measurement of the D, semileptonic decays into rr can reveal in a model-independent way its eventual gluon component 0~. The analysis also implies that one expects an observation of the KI? final states from the UB which may compete (if phase space allowed) with the one from a low mass ss state assumed in the literature to be the SU(3) partner of the observed 40.6) if the latter is a fiu + ad state.