Study of the J/ψ decay into five pions

Augustin, J.-E.; Cosme, G.; Couchot, F.; Fulda, F.; Grosdidier, G.; Jean‐Marie, B.; Lepeltier, V.; Mané, F.; Szklarz, G.; Bisello, D.; Busetto, G.; Castro, Asier Pereiro; Pescara, L.; Sartori, P.; Stančo, L.; Ajaltouni, Z.; Falvard, A.; Jousset, J.; Michel, B.; Montret, J. C.; Baldini, R.; Calcaterra, A.

doi:10.1016/0550-3213(89)90208-3

Cited by 73 publications

(39 citation statements)

References 10 publications

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“…There is a sizable peak around 500 MeV in this process studied first by DM2 [32] and now by BES [33]. Again one may ask whether the peak can be represented by a normal Breit Wigner resonance.…”

Section: Decay J/ψ → ωππmentioning

confidence: 99%

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The Scalar Meson Sector and the σ, κ Problem

Ochs¹

2004

AIP Conference Proceedings

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Abstract. In the light scalar meson sector (M < ∼ 1.8 GeV) one expects at least one qq nonet and a glueball, possibly also multi-quark states. We discuss the present phenomenological evidence for σ and κ particles; if real, they could be members of the lightest (quark or multi-quark) nonet together possibly with a 0 (980) and f 0 (980). Alternatively, the lightest nonet could include f 0 (980) but not σ and κ. Future decisive experimental studies, concerning tests of symmetry relations, especially in B-decays, are outlined.

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Section: Decay J/ψ → ωππmentioning

confidence: 99%

“…Then the ratio R T should equal the corresponding ratio for scalars R S if we assume the same symmetry breaking in both multiplets. With the data from DM2 [32] for σ and the preliminary result from BES [43] for κ we find after correction for neutrals…”

Section: Tests In J/ψ Decaysmentioning

confidence: 99%

The Scalar Meson Sector and the σ, κ Problem

Ochs¹

2004

AIP Conference Proceedings

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“…Some examples are known where the Adler zero is definitely absent, e.g. J/Ψ → ωσ [9]. We have explored both possibilities for every partial wave, choosing the better alternative for every resonance.…”

Section: −−mentioning

confidence: 99%

I=0, C=−1 mesons from 1940 to 2410 MeV

et al. 2002

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“…The controversy basically stems from the large width of the resonance, which makes it difficult to discern if the shape of the spectrum is actually due to a pole in the amplitude or to a result of other effects in the s and t channels. Several experimental results can be explained with the existence of such a resonance [6]. If it exists, it is a relevant degree of freedom and must be incorporated into the analysis, together with the conditions imposed by unitarity, chiral symmetry, etc [7].…”

Section: Introductionmentioning

confidence: 99%