Implication of the observed $$e^{+}e^{-}\rightarrow p{\bar{p}}\pi ^0$$ e + e - → p p ¯ π 0 for studying the $$p{\bar{p}}\rightarrow \psi (3770)\pi ^0$$ p p ¯ → ψ ( 3770 ) π 0 process
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چکیده
منابع مشابه
Se p 19 99 Production of the π − , π 0 in the reaction d ( e , pp ) e ′ π − π 0
Recently, the differential yield and target asymmetry of the reaction d(e, pp)eπ on the tensor polarized deuterium target have been presented in [1, 2], where the experimental procedure and basic assumption were described. A precise treatment of this reaction needs to investigate the reaction channels with an additional neutral pion production as a background to the leading reaction of a single...
متن کاملObservation of Z_{c}(3900)^{0} in e^{+}e^{-}→π^{0}π^{0}J/ψ.
Using a data sample collected with the BESIII detector operating at the BEPCII storage ring, we observe a new neutral state Z_{c}(3900)^{0} with a significance of 10.4σ. The mass and width are measured to be 3894.8±2.3±3.2 MeV/c^{2} and 29.6±8.2±8.2 MeV, respectively, where the first error is statistical and the second systematic. The Born cross section for e^{+}e^{-}→π^{0}π^{0}J/ψ and the fr...
متن کاملγγ → π 0 π 0 and η → π 0 γγ at O ( p 6 ) in the NJL model
We discuss the processes ! 0 0 and ! 0 at O(p 6) in the momentum expansion. The calculation involves tree{level, one{loop and two{loop diagrams of a chiral eeective lagrangian which is obtained by a bosonization of the NJL model. The importance of integrating out meson resonances (reduction) is pointed out. Our nal results for the total cross section of ! 0 0 are in good agreement with the expe...
متن کاملStudy of the Process e + e − → π 0 π 0 γ in c.m. Energy
The cross section of the process e+e− → π0π0γ has been measured in the c.m. energy range 600–970 MeV with the CMD-2 detector. The following branching ratios have been determined: B(ρ0 → π0π0γ) = (5.2 −1.3 ± 0.6) × 10−5 and B(ω → π0π0γ) = (6.4 −2.0 ± 0.8) × 10−5. Evidence for the ρ0 → f0(600)γ decay has been obtained: B(ρ0 → f0(600)γ) = (6.0 −2.7 ± 0.9) × 10−5. From a search for the process e+e−...
متن کامل0 Quantum interference in the e + e − decays of ρ 0 and ω - mesons produced in π − p reactions
The study of the π−p → ρn and π−p → ωn amplitudes close and below the vector meson production threshold (1.2 < √ s < 1.8 GeV) reveals a rich dynamics arising from the presence of specific baryon resonances in this energy range. The interference pattern of the ee decays of the ρand ω-mesons produced in π−p reactions reflects directly this dynamics. We discuss this interference pattern in the π−p...
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ژورنال
عنوان ژورنال: The European Physical Journal C
سال: 2016
ISSN: 1434-6044,1434-6052
DOI: 10.1140/epjc/s10052-016-4054-4