Nuclear Photoproduction of Pseudoscalar Mesons at Forward Angles up to 6.0 GeV

Rodrigues, T. E.; Arruda-Neto, João D T; Mesa, J.; García, C.; Shtejer, K.; Dale, D.; Nakagawa, I.; Cole, P. L.

doi:10.1063/1.2813786

Search citation statements

Order By: Relevance

Paper Sections

Select...

Extracting the η → γ γ Decay Width Via The Primakoff Method1

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2010

Publication Types

Select...

Article1

Relationship

Self Cite1

Independent0

Authors

Journals

Cited by 1 publication

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2 from Ref. [45]), leading to a systematic uncertainty in the decay width of less than 2% for the combined fit (Be and Cu) and less than 4% for the single fit (Be only).…”

Section: Extracting the η → γ γ Decay Width Via The Primakoff Methodmentioning

confidence: 99%

See 1 more Smart Citation

Nuclear incoherent photoproduction ofπ0andηfrom 4 to 12 GeV

Rodrigues¹,

Arruda‐Neto²,

Mesa³

et al. 2010

Phys. Rev. C

Self Cite

View full text Add to dashboard Cite

The mechanism of incoherent π 0 and η photoproduction from complex nuclei is investigated from 4 to 12 GeV with an extended version of the multicollisional Monte Carlo (MCMC) intranuclear cascade model. The calculations take into account the elementary photoproduction amplitudes via a Regge model and the nuclear effects of photon shadowing, Pauli blocking, and meson-nucleus final-state interactions. The results for π 0 photoproduction reproduced for the first time the magnitude and energy dependence of the measured rations σ γ A /σ γ N for several nuclei (Be, C, Al, Cu, Ag, and Pb) from a Cornell experiment. The results for η photoproduction fitted the inelastic background in Cornell's yields remarkably well, which is clearly not isotropic as previously considered in Cornell's analysis. With this constraint for the background, the η → γ γ decay width was extracted using the Primakoff method, combining Be and Cu data [ η→γ γ = 0.476 (62)

show abstract

“…2 from Ref. [45]), leading to a systematic uncertainty in the decay width of less than 2% for the combined fit (Be and Cu) and less than 4% for the single fit (Be only).…”

Section: Extracting the η → γ γ Decay Width Via The Primakoff Methodmentioning

confidence: 99%

“…We have also investigated the sensitivity of the cascade results using empirical (distorted) momentum distributions from several nucleon knock-out experiments (see Table 1 from Ref. [45]). An extensive review of the proton knock-out data for light nuclei can be found in Ref.…”

mentioning

confidence: 99%