Hadro- and photo-production of η' in quasi-free proton and neutron processes

HUANG Fei

doi:10.1088/1674-1137/33/12/040

Chinese Physics C> 2009, Vol. 33> Issue(12) : 1291-1295 DOI: 10.1088/1674-1137/33/12/040

Hadro- and photo-production of η' in quasi-free proton and neutron processes

HUANG Fei ^,

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Abstract：
The η' photoproduction process on quasi-free proton and neutron and the reaction NN→η′NN are investigated within a relativistic effective Lagrangian approach to hadronic interactions. Resonances with spins 1/2 and 3/2 are considered together with the nucleonic and t-channel meson-exchange current contributions. In photoproduction processes, the S₁₁ resonance is found to be responsible for the sharp rise of the cross sections near threshold. In pp→η′pp, it is found that the S₁₁ resonance dominates the total cross section over the entire energy region considered. The spin observables, in particular the beam and target asymmetries, are shown to be very sensitive to the reaction mechanism and will help impose more stringent constraints on the model parameters.

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HUANG Fei. Hadro- and photo-production of η' in quasi-free proton and neutron processes[J]. Chinese Physics C, 2009, 33(12): 1291-1295. doi: 10.1088/1674-1137/33/12/040

HUANG Fei. Hadro- and photo-production of η' in quasi-free proton and neutron processes[J]. Chinese Physics C, 2009, 33(12): 1291-1295. doi: 10.1088/1674-1137/33/12/040 shu

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Received: 2009-08-07
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沈阳化工大学材料科学与工程学院沈阳 110142

Hadro- and photo-production of η' in quasi-free proton and neutron processes

Corresponding author: HUANG Fei,

Received Date: 2009-08-07

Accepted Date: 1900-01-01

Available Online: 2009-12-05

Abstract:

The η' photoproduction process on quasi-free proton and neutron and the reaction NN→η′NN are investigated within a relativistic effective Lagrangian approach to hadronic interactions. Resonances with spins 1/2 and 3/2 are considered together with the nucleonic and t-channel meson-exchange current contributions. In photoproduction processes, the S₁₁ resonance is found to be responsible for the sharp rise of the cross sections near threshold. In pp→η′pp, it is found that the S₁₁ resonance dominates the total cross section over the entire energy region considered. The spin observables, in particular the beam and target asymmetries, are shown to be very sensitive to the reaction mechanism and will help impose more stringent constraints on the model parameters.

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Hadro- and photo-production of η' in quasi-free proton and neutron processes

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