The decays of $$\bar{B}^0$$ B ¯ 0

Abstract

We investigate the decays ofB 0 s ,B 0 and B − into η c plus a scalar or vector meson in a theoretical framework by taking into account the dominant process for the weak decay ofB meson into η c and a qq pair. After hadronization of this qq component into pairs of pseudoscalar mesons we obtain certain weights for the pseudoscalar meson-pseudoscalar meson components. In addition, theB 0 andB 0 s decays into η c and ρ 0 , K * are evaluated and compared to the η c and φ production. The calculation is based on the postulation that the scalar mesons f 0 (500), f 0 (980) and a 0 (980) are dynamically generated states from the pseudoscalar meson-pseudoscalar meson interactions in S-wave. Up to a global normalization factor, the ππ, KK and πη invariant mass distributions for the decays ofB 0 s

Theoretical study of the Ω(2012) state in the Ωc0Zeng1, Lu2, Wang3 et al. 2020Phys. Rev. DSelf Cite15120View full textAdd to dashboardCite

“…where the factor V P is assumed to be constant in the relevant energy region [34,46,47], and its actual value should be determined from the experimental measurements for a certain decay channel. The loop functions GK Ξ Ã and G ηΩ depend on the invariant mass, M inv , of the finalKΞ or KΞ Ã ð1530Þ system.…”

Nucleon resonance production in the γp→pηϕ reaction

“…The coupling constant g πN N is taken from Ref. [21,22] with g πN N = 13.45. Other coupling constants can be determined through the following formulae,…”

Theoretical interpretation of the $D^+_s \to π^+ π^0 η$ decay and the nature of $a_0(980)$

“…[2][3][4][5][6] the a 0 (980) is generated from the K K, πη interaction in coupled channels in the coupled-channel chiral unitary approach [15]. This production mechanism of scalar resonances has been utilized for explaining the B 0 s decays into J/ψ and f 0 (980) [16,17], B 0 decays into D 0 and f 0 (500), f 0 (980) and a 0 (980) [18], D 0 decays into K 0 and f 0 (500), f 0 (980) and a 0 (980) [19], among others [20,21].…”