25–29 Sept 2017
Salamanca, Spain
Europe/Zurich timezone

D->4pi, D->KKpipi amplitude analyses and properties of a1(1260), pi(1300), a1(1640)

26 Sept 2017, 14:55
20m
Sala Menor

Sala Menor

Talk Spectroscopy of mesons Spectroscopy of mesons

Speaker

Nicola Anne Skidmore (University of Bristol (GB))

Description

The resonant substructure of the four-body decays D0→π+π−π+π− and D0→K+K−π+π− is studied using data collected by the CLEO experiment. An amplitude analysis is performed in order to disentangle the various intermediate state contributions. To limit the model complexity a data driven regularization procedure is applied. The broad resonances a1(1260)+, π(1300)+ and a1(1640)+ are studied in detail, including quasi-model-independent parametrizations of their lineshapes. The mass and width of the a1(1260)+ meson are determined to be m(a1(1260)+)=[1225±9(stat)±17(syst)±10(model)]MeV/c2 and Γ(a1(1260)+)=[430±24(stat)±25(syst)±18(model)]MeV. For further details, see arXiv:1703.08505 (http://inspirehep.net/record/1519168?ln=en).

Primary authors

Nicola Anne Skidmore (University of Bristol (GB)) Philippe D'Argent (Ruprecht-Karls-Universitaet Heidelberg (DE)) Samuel Thomas Harnew (University of Bristol (GB)) Paras Naik (University of Bristol (GB)) Evelina Mihova Gersabeck (Ruprecht-Karls-Universitaet Heidelberg (DE)) Jeremy Peter Dalseno (University of Bristol (GB)) Jonas Rademacker (University of Bristol (GB)) Claire Prouve (University of Bristol (GB)) Jack Benton (University of Bristol (GB))

Presentation materials