Differential cross section measurements for above the first nucleon resonance region
PT Mattione, DS Carman, II Strakovsky, RL Workman… - Physical Review C, 2017 - APS
PT Mattione, DS Carman, II Strakovsky, RL Workman, AE Kudryavtsev, A Svarc, VE Tarasov…
Physical Review C, 2017•APSThe quasifree γ d→ π− p (p) differential cross section has been measured with CLAS at
photon beam energies E γ from 0.445 to 2.510 GeV (corresponding to W from 1.311 to 2.366
GeV) for pion center-of-mass angles cos θ π cm from− 0.72 to 0.92. A correction for final
state interactions has been applied to these data to extract the γ n→ π− p differential cross
sections. These cross sections are quoted in 8428 (E γ, cos θ π cm) bins, a factor of nearly 3
increase in the world statistics for this channel in this kinematic range. These new data help …
photon beam energies E γ from 0.445 to 2.510 GeV (corresponding to W from 1.311 to 2.366
GeV) for pion center-of-mass angles cos θ π cm from− 0.72 to 0.92. A correction for final
state interactions has been applied to these data to extract the γ n→ π− p differential cross
sections. These cross sections are quoted in 8428 (E γ, cos θ π cm) bins, a factor of nearly 3
increase in the world statistics for this channel in this kinematic range. These new data help …
The quasifree differential cross section has been measured with CLAS at photon beam energies from 0.445 to 2.510 GeV (corresponding to from 1.311 to 2.366 GeV) for pion center-of-mass angles from to 0.92. A correction for final state interactions has been applied to these data to extract the differential cross sections. These cross sections are quoted in 8428 bins, a factor of nearly 3 increase in the world statistics for this channel in this kinematic range. These new data help to constrain coupled-channel analysis fits used to disentangle the spectrum of resonances and extract their properties. Selected photon decay amplitudes at the resonance poles are determined for the first time and are reported here.
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