2015
DOI: 10.1103/physrevd.92.036003
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Isospin breaking decayη(1405)f0(980)π0

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Cited by 77 publications
(84 citation statements)
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“…[19][20][21][22][23]. More closely related to the present problem is the case of the η(1405) → πa 0 (980), πf 0 (980) [24][25][26], where in particular, the latter channel violating isospin is enhanced due to a triangle singularity.…”
Section: Introductionmentioning
confidence: 99%
“…[19][20][21][22][23]. More closely related to the present problem is the case of the η(1405) → πa 0 (980), πf 0 (980) [24][25][26], where in particular, the latter channel violating isospin is enhanced due to a triangle singularity.…”
Section: Introductionmentioning
confidence: 99%
“…Notice that the amplitude for the diagram in Fig. 4 does not contain the logarithmic (triangle) singularity in the physical region of the decay f 1 (1285) → f 0 (980)π 0 → π + π − π 0 , contrary to the case of the decay η(1405) → f 0 (980)π 0 → π + π − π 0 , where it is important to take into account the finite width of the K * (892) meson when calculating [35]. …”
Section: Discussionmentioning
confidence: 99%
“…Recently, the results of the first experiments on its discovery in the reactions [30], (e) J/ψ → φf 0 (980)π 0 → φ 3π [31], (f) J/ψ → φf 1 (1285) → φf 0 (980)π 0 → φ 3π [31] have been obtained with the help of detectors VES in Protvino [27,28] and BESIII in Beijing [29][30][31]. The theoretical considerations concerning the BESIII data [30] * achasov@math.nsc.ru † kozhev@math.nsc.ru ‡ shestako@math.nsc.ru on the reaction (d), that is, on the decay η(1405) → f 0 (980)π 0 → 3π, were presented in [32][33][34][35]. Interest in the a 0 0 (980) − f 0 (980) mixing is primarily due to the fact that the amplitude of the isospin breaking transition a 0 0 (980) → (K + K − + K 0K 0 ) → f 0 (980), caused by the mass difference of the K + K − and K 0K 0 intermediate states, in the region between KK thresholds turns out to be of the order of (m K 0 − m K + )/m K 0 [1] [i.e.…”
Section: Introductionmentioning
confidence: 99%
“…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.…”
Section: Introductionmentioning
confidence: 99%