%0 Journal Article
%T Amplitude analysis of the D+-> pi(-)pi(+)pi(+) decay and measurement of the pi(-)pi(+) S-wave amplitude
%A LHCb Collaboration (Aaij, R. et al
%A Jaimes Elles, S. J.
%A Jashal, B. K.
%A Martinez-Vidal, F.
%A Oyanguren, A.
%A Rebollo De Miguel, M.
%A Remon Alepuz, C.
%A Ruiz Vidal, J.
%A Sanderswood, I.
%J Journal of High Energy Physics
%D 2023
%V 06
%N 6
%I Springer
%@ 1029-8479
%G English
%F LHCbCollaborationAaij_etal2023
%O WOS:001035565600001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5663), last updated on Wed, 10 Apr 2024 12:40:28 +0000
%X An amplitude analysis of the D+-> (-)pi(+)pi(+) decay is performed with a sample corresponding to 1.5 fb(-1) of integrated luminosity of pp collisions at a centre-of-mass energy root s = 8 TeV collected by the LHCb detector in 2012. The sample contains approximately six hundred thousand candidates with a signal purity of 95%. The resonant structure is studied through a fit to the Dalitz plot where the pi(-)pi(+) S-wave amplitude is extracted as a function of pi(-)pi(+) mass, and spin-1 and spin-2 resonances are included coherently through an isobar model. The S-wave component is found to be dominant, followed by the rho(770)(0)pi(+) and f(2)(1270)pi(+) components. A small contribution from the omega(782) -> pi(-)pi(+) decay is seen for the first time in the D+-> pi(-)pi(+)pi(+) decay.
%K Charm Physics
%K Hadron-Hadron Scattering
%K Particle and Resonance Production
%R 10.1007/JHEP06(2023)044
%U https://arxiv.org/abs/2208.03300
%U https://doi.org/10.1007/JHEP06(2023)044
%P 044-28pp