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).
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))
