TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Jaimes Elles, S. J.
AU  - Jashal, B. K.
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Rebollo De Miguel, M.
AU  - Remon Alepuz, C.
AU  - Ruiz Vidal, J.
AU  - Sanderswood, I.
PY  - 2023
DA  - 2023//
TI  - Amplitude analysis of the D+s → π-π+π+ decay
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 204
EP  - 35pp
VL  - 07
IS  - 7
PB  - Springer
KW  - Charm Physics
KW  - Hadron-Hadron Scattering
KW  - Particle and Resonance Production
AB  - A Dalitz plot analysis of the D-s(+) -> pi(-)pi(+)pi(+) decay is presented. The analysis is based on proton-proton collision data recorded by the LHCb experiment at a centre-of-mass energy of 8TeV and corresponding to an integrated luminosity of 1.5 fb(-1). The resonant structure of the decay is obtained using a quasi-model-independent partial-wave analysis, in which the pi(+)pi(-) S-wave amplitude is parameterised as a generic complex function determined by a fit to the data. The S-wave component is found to be dominant, followed by the contribution from spin-2 resonances and a small contribution from spin-1 resonances. The latter includes the first observation of the D-s(+) -> omega(782)pi(+) channel in the D-s(+) -> pi(-)pi(+)pi(+) decay. The resonant structures of the D-s(+) -> pi(-)pi(+)pi(+) and D+ -> pi(-)pi(+)pi(+) decays are compared, providing information about the mechanisms for the hadron formation in these decays.
SN  - 1029-8479
UR  - https://arxiv.org/abs/2209.09840
UR  - https://doi.org/10.1007/JHEP07(2023)204
DO  - 10.1007/JHEP07(2023)204
LA  - English
N1  - WOS:001061827700001
ID  - LHCbCollaborationAaij_etal2023
ER  -