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Author
LHCb Collaboration (Aaij, R. et al)
;
Jaimes Elles, S.J.
;
Jashal, B.K.
;
Martinez-Vidal, F.
;
Oyanguren, A.
;
Rebollo De Miguel, M.
;
Remon Alepuz, C.
;
Ruiz Vidal, J.
;
Sanderswood, I.
Title
Amplitude analysis of the D+-> pi(-)pi(+)pi(+) decay and measurement of the pi(-)pi(+) S-wave amplitude
Type
Journal Article
Year
2023
Publication
Journal of High Energy Physics
Abbreviated Journal
J. High Energy Phys.
Volume
06
Issue
6
Pages
044 - 28pp
Keywords
Charm Physics
;
Hadron-Hadron Scattering
;
Particle and Resonance Production
Abstract
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.
Address
[Baptista de Souza Leite, J.; Bediaga, I. B.; Cruz Torres, M.; De Freitas Carneiro Da Graca, U.; De Miranda, J. M.; dos Reis, A. C.; Falcao, L. N.; Gomes, A.; Massafferri, A.; Torres Machado, D.] CBPF, Rio De Janeiro, Brazil, Email: francesco.polci@cern.ch
Corporate Author
Thesis
Publisher
Springer
Place of Publication
Editor
Language
English
Summary Language
Original Title
Series Editor
Series Title
Abbreviated Series Title
Series Volume
Series Issue
Edition
ISSN
1029-8479
ISBN
Medium
Area
Expedition
Conference
Notes
WOS:001035565600001
Approved
no
Is ISI
yes
International Collaboration
yes
Call Number
IFIC @ pastor @
Serial
5663
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