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Observation of Two New N* Resonances in the Decay ψ(3686)→ppπ0

Observation of Two New N* Resonances in the Decay ψ(3686)→ppπ0

M Ablikim, M N Achasov, D J Ambrose, F F An, Q An, Z H An, J Z Bai, Y Ban, J Becker, N Berger, M Bertani, J M Bian, E Boger, O Bondarenko, I Boyko, R A Briere, V Bytev, X Cai, A Calcaterra, G F Cao, J F Chang, etc.

Phys Rev Lett. 2013 Jan 11;110(2):022001.

PMID: 23383891

Abstract:

Based on 106×10(6)ψ(3686) events collected with the BESIII detector at the BEPCII facility, a partial wave analysis of ψ(3686)→ppπ0 is performed. The branching fraction of this channel has been determined to be B(ψ(3686)→ppπ0)=(1.65±0.03±0.15)×10(-4). In this decay, 7 N* intermediate resonances are observed. Among these, two new resonances, N(2300) and N(2570) are significant, one 1/2+ resonance with a mass of 2300(-30-0)(+40+109) MeV/c2 and width of 340(-30-58)(+30+110) MeV/c2, and one 5/2- resonance with a mass of 2570(-10-10)(+19+34) MeV/c2 and width of 250(-24-21)(+14+69) MeV/c2. For the remaining 5 N* intermediate resonances [N(1440), N(1520), N(1535), N(1650) and N(1720)], the analysis yields mass and width values that are consistent with those from established resonances.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
LS77305	N2300			Price

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