Mechanisms of the isospin-breaking decayf1(1285)→f0(980

Manifestations of the a00(980)−f0(980Achasov1, Shestakov2 2017Phys. Rev. DSelf Cite11030View full textAdd to dashboardCite

“…[1,4]. The values of C 1 = 0.047 GeV −1/2 and C 2 = 0.095 GeV −1/2 are fixed taking into account the CLEO Collaboration results [5,6], together with the Particle Data Group information [7], and the relations…”

“…A detailed list of references concerning the a 0 0 (980) − f 0 (980) mixing can be found, for example, in Refs. [3,4]. In Ref.…”

Interference phenomena in the decay Ds+→ηπ0π+Achasov1, Shestakov2 2017Phys. Rev. DSelf Cite17090View full textAdd to dashboardCite

“…This effect appears as the narrow (with the width of about 2(M K 0 − M K + ) ≈ 8 MeV) resonant peak between the K + K − and K (980) − f 0 (980) mixing and estimating the effects related with this phenomenon; the detailed list of references may be found, for example, in Ref. [3].…”

“…As a result it has become clear [3,9,10] that the similar isospin breaking effect can appear not only due to the a 0 0 (980) − f 0 (980) mixing, but also due to any mechanism of the production of the KK pairs with the definite isospin in the S wave, X → KK → f 0 (980)/a 0 0 (980) [11]. Thus, a new tool emerged to study the production mechanism and nature of light scalars.…”

Status of R(s) measurements by energy scan method

“…The SND group recently published analysis of this channel based on a full data sample collected on the previous VEPP-2M collider [35]. The previous most precise measurements were done by CMD-2 [36] and SND [37] at VEPP-2M, where the SND result was obtained using only 25% of collected data.…”