A combined study of hadronic D+ → K−π+π+ and D+s → K+K+π− decays by means of the analysis of semileptonic D+ → K−π+l+νl decays
Escribano, Rafel (Universitat Autònoma de Barcelona. Departament de Física)
Masjuan, Pere (Universitat Autònoma de Barcelona. Departament de Física)
Sánchez-Puertas, Pablo (Institut de Física d'Altes Energies)

Data:	2023
Resum:	We perform a combined study of the two hadronic decays D+→K−π+π+ and D+s→K+K+π− using a detailed analysis of the semileptonic decays D+→K−π+ℓ+νℓ (ℓ=e,μ) thanks to the high-statistics D+→K−π+e+νe dataset provided by the BESIII Collaboration. We propose simple and suitable amplitude parametrizations of the studied reactions that shall be of interest to experimentalists for upcoming analyses. These new parametrizations are based on the naïve factorization hypothesis and the description of the resulting matrix elements in terms of well-known hadronic form factors, with special emphasis on the Kπ scalar and vector cases. Such form factors account for final state interactions which fulfil analyticity, unitarity and chiral symmetry constraints. As a result of our study, we find a good prediction for the P-wave BR in D+→K−π+π+ decays, while adopting a global phase and moderate rescaling for the S-wave, that we ascribe to three-body effects, we find a reasonable description. The resulting model is confronted against D+s→K+K+π− decays, obtaining again a good agreement with data.
Ajuts:	European Commission 824093 European Commission 754510 Agencia Estatal de Investigación PID2020-112965GB-I00 Agencia Estatal de Investigación PID2020-114767GB-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00649
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Prepublicació ; recerca ; Versió de l'autor
Obra relacionada:	R. Escribano, P. Masjuan, P. Sanchez-Puertas. «A combined study of hadronic D+→K−π+π+ and D+s→K+K+π− decays by means of the analysis of semileptonic D+→K−π+ℓ+νℓ decays». arXiv https://doi.org/10.48550/arXiv.2302.03312

Adreça alternativa: https://arxiv.org/abs/2302.03312v1

18 p, 1.0 MB

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