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Differential cross section measurements for γn→π-p above the first nucleon resonance region
Mattione, PT Carman, DS Strakovsky, II Workman, RL Kudryavtsev, AE Svarc, A Tarasov, VE Adhikari, KP Adhikari, S Adikaram, D
Mattione, PT
Carman, DS
Strakovsky, II
Workman, RL
Kudryavtsev, AE
Svarc, A
Tarasov, VE
Adhikari, KP
Adhikari, S
Adikaram, D
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Journal Article
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2017-09-18
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10.1103/PhysRevC.96.035204
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© 2017 American Physical Society. The quasifree γd→π-p(p) differential cross section has been measured with CLAS at photon beam energies Eγ from 0.445 to 2.510 GeV (corresponding to W from 1.311 to 2.366 GeV) for pion center-of-mass angles cosθπc.m. from -0.72 to 0.92. A correction for final state interactions has been applied to these data to extract the γn→π-p differential cross sections. These cross sections are quoted in 8428 (Eγ,cosθπc.m.) 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 N∗ resonances and extract their properties. Selected photon decay amplitudes N∗→γn at the resonance poles are determined for the first time and are reported here.
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Physical Review C
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