We discuss technical aspects and first results of a lattice QCD study of the a0(980) state. We employ various interpolating operators of quark-antiquark, mesonic molecule, diquark-antidiquark and two-meson type. Both connected and disconnected contributions including diagrams with closed fermion loops are computed. To keep statistical errors small, it is essential to optimize the computation of these diagrams by choosing that combination of techniques most appropriate for each type of diagram from the correlation matrix of interpolating operators. We illustrate, how this can be done, by discussing certain diagrams in detail. We also present preliminary results corresponding to a 4×4 submatrix computed with 2+1 flavors of clover fermions
A, A., Alexandrou, C., Berlin, J., Dalla Brida, M., Gravina, M., & Wagner, M. (2014). Investigation of the tetraquark candidate a0(980): Technical aspects and preliminary results. POS PROCEEDINGS OF SCIENCE, 214.
Citazione: | A, A., Alexandrou, C., Berlin, J., Dalla Brida, M., Gravina, M., & Wagner, M. (2014). Investigation of the tetraquark candidate a0(980): Technical aspects and preliminary results. POS PROCEEDINGS OF SCIENCE, 214. | |
Tipo: | Articolo in rivista - Articolo scientifico | |
Carattere della pubblicazione: | Scientifica | |
Presenza di un coautore afferente ad Istituzioni straniere: | Si | |
Titolo: | Investigation of the tetraquark candidate a0(980): Technical aspects and preliminary results | |
Autori: | A, A; Alexandrou, C; Berlin, J; Dalla Brida, M; Gravina, M; Wagner, M | |
Autori: | ||
Data di pubblicazione: | 2014 | |
Lingua: | English | |
Rivista: | POS PROCEEDINGS OF SCIENCE | |
Appare nelle tipologie: | 01 - Articolo su rivista |
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