| Texto completo | |
| Autor(es): |
Malabarba, Brenda B.
;
Khemchandani, K. P.
;
Torres, A. Martinez
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW D; v. 108, n. 3, p. 17-pg., 2023-08-08. |
| Resumo | |
In this work we calculate the decay widths of phi(2170) to phi eta and phi eta' by considering phi(2170) as a phi K (K) over bar state, with K (K) over bar clustering as f(0)(980). These decay widths have been recently determined by the BESIII, BABAR, and Belle collaborations with the aim of unraveling the nature of phi(2170). By analyzing the data on the cross sections of the process e(+)e(-) -> phi eta, two solutions were found by the BESIII collaboration with the same chi(2) per number of degrees of freedom (n.d.f.), mass and width for phi(2170). However, different values for (B phi eta Ie+ei-phi(2170))-I-phi(2170) were obtained, where B-phi eta(phi(2170)). is the branching fraction of phi(2170) -> phi eta and Gamma(phi(2170))(e+ei-) is the decay width for phi(2170) -> e(+)e(-): 0.24(-0.07)(+0.12) eV (solution I) and 10.11(-3.13)(+3.87) eV (solution II). In case of B-phi eta(phi(2170))Gamma(phi(2170))(e+ei-), a value of 7.1 +/- 0.7 +/- 0.7 was determined by the BESIII collaboration from fits to the data on the cross section of e(+)e(-) -> phi eta'. The Belle collaboration has also determined B-phi eta(phi(2170))Gamma(phi(2170))(e+ei-), more recently, although the statistical significance related to the signal of phi(2170) in the data is low. We calculate the decay widths of phi(2170) to phi eta and phi eta', and compare their ratio Gamma(phi(2170))(phi eta) /Gamma(phi(2170))(phi eta) with the one determined by using the above mentioned experimental data. Considering the theoretical and experimental uncertainties, the lower limit of our theoretical result (similar or equal to 2.6) is close to the upper value obtained (similar or equal to 2) by using the solution II of BESIII for B-phi eta(phi(2170))Gamma(phi(2170))(e+ei-), as well as to the upper limit found (similar or equal to 2.8) when considering the solutions III and IV of the Belle collaboration for B-phi eta(phi(2170))Gamma(phi(2170))(e+ei-). (AU) | |
| Processo FAPESP: | 22/08347-9 - Hádrons novos e enigmáticos |
| Beneficiário: | Kanchan Pradeepkumar Khemchandani |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 23/01182-7 - Física de hádrons exóticos |
| Beneficiário: | Alberto Martinez Torres |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 20/00676-8 - Estados exóticos de três-hádrons com estranheza |
| Beneficiário: | Brenda Bertotto Malabarba |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |