Study of ?(1405)/?(1475) in J/? ? ?KS0KS0?0 decay
Küçük Resim Yok
Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Using a sample of (10.09 +/- 0.04) x 109 J/psi decays collected with the BESIII detector, partial wave analyses of the decay J/psi -> gamma(KSKS0)-K-0 pi(0) are performed within the (KSKS0)-K-0 pi(0) invariant mass region below 1.6 GeV/c(2). The covariant tensor amplitude method is used in both mass independent and mass dependent approaches. Both analysis approaches exhibit dominant pseudoscalar and axial vector components, and show good consistency for the other individual components. Furthermore, the mass dependent analysis reveals that the (KSKS0)-K-0 pi(0) invariant mass spectrum for the pseudoscalar component can be well described with two isoscalar resonant states using relativistic Breit-Wigner model, i.e., the eta(1405) with a mass of 1391.7 +/- 0.7(-0.3)(+11.3) MeV/c(2) and a width of 60.8 +/- 1.2(-12.0)(+5.5) MeV, and the eta(1475) with a mass of 1507.6 +/- 1.6(-32.2)(+15.5) MeV/c(2) and a width of 115.8 +/- 2.4(-10.9)(+14.8) MeV. The first and second uncertainties are statistical and systematic, respectively. Alternate models for the pseudoscalar component are also tested, but the description of the -10.9 invariant mass spectrum deteriorates significantly.
Açıklama
Anahtar Kelimeler
E(+)-E(-) Experiments, Particle And Resonance Production, Spectroscopy
Kaynak
Journal of High Energy Physics
WoS Q Değeri
N/A
Scopus Q Değeri
Q2
Cilt
Sayı
3
