Amplitude analysis of the Ds+→ π−π+π+ decay
R. Aaij;A. S. W. Abdelmotteleb;C. Abellan Beteta;F. Abudin??n;T. Ackernley;B. Adeva;M. Adinolfi;P. Adlarson;H. Afsharnia;C. Agapopoulou;C. A. Aidala;Z. Ajaltouni;S. Akar;K. Akiba;J. Albrecht;F. Alessio;M. Alexander;A. Alfonso Albero;Z. Aliouche;P. Alvarez Cartelle;R. Amalric;S. Amato;J. L. Amey;Y. Amhis;L. An;L. Anderlini;M. Andersson;A. Andreianov;M. Andreotti;D. Andreou;D. Ao;F. Archilli;A. Artamonov;M. Artuso;E. Aslanides;M. Atzeni;B. Audurier;S. Bachmann;M. Bachmayer;J. J. Back;A. Bailly-reyre;P. Baladron Rodriguez;V. Balagura;W. Baldini;J. Baptista de Souza Leite;M. Barbetti;R. J. Barlow;S. Barsuk;W. Barter;M. Bartolini;F. Baryshnikov;J. M. Basels;G. Bassi;B. Batsukh;A. Battig;A. Bay;A. Beck;M. Becker;F. Bedeschi;I. B. Bediaga;A. Beiter;V. Belavin;S. Belin;V. Bellee;K. Belous;I. Belov;I. Belyaev;G. Benane;G. Bencivenni;E. Ben-Haim;A. Berezhnoy;R. Bernet;S. Bernet Andres;D. Berninghoff;H. C. Bernstein;C. Bertella;A. Bertolin;C. Betancourt;F. Betti;Ia. Bezshyiko;S. Bhasin;J. 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2023-01-01
Abstract
A Dalitz plot analysis of the Ds+ → π − π + π + decay is presented. The analysis is based on proton-proton collision data recorded by the LHCb experiment at a centre-of-mass energy of 8 TeV 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 π + π − 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 Ds+ → ω(782)π + channel in the Ds+ → π − π + π + decay. The resonant structures of the Ds+ → π − π + π + and D + → π − π + π + decays are compared, providing information about the mechanisms for the hadron formation in these decays.
2023
Inglese
2023
7
204
https://link.springer.com/article/10.1007/JHEP07(2023)204
Esperti anonimi
internazionale
scientifica
Charm Physics; Hadron-Hadron Scattering; Particle and Resonance Production
sì
Aaij, R.; Abdelmotteleb, A. S. W.; Abellan Beteta, C.; Abudin??n, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Adlarson, P.; Afsharnia, H.; Agapopoulou
...espandi
1.1 Articolo in rivista
info:eu-repo/semantics/article
1 Contributo su Rivista::1.1 Articolo in rivista
262
1071
open
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