A measurement of the differential cross section for the reaction γn → π⁻ p from deuterium

Chen, W.; Mibe, T.; Dutta, D.; Gao, H.; Laget, J. M.; Mirazita, M.; Rossi, P.; Stepanyan, S.; Strakovsky, I. I.

doi:10.1103/PhysRevLett.103.012301

arXiv 2009-03-06 DOI 10.1103/PhysRevLett.103.012301 0 مشاهدة

A measurement of the differential cross section for the reaction γn → π⁻ p from deuterium

Chen, W. · Mibe, T. · Dutta, D. · Gao, H. · Laget, J. M. · Mirazita, M. · Rossi, P. · Stepanyan, S. · Strakovsky, I. I.

Nuclear Experiment

الأصل · EN

We report a measurement of the differential cross section for the γn → π- p process from the CLAS detector at Jefferson Lab in Hall B for photon energies between 1.0 and 3.5 GeV and pion center-of-mass (c.m.) angles (θc.ₘ.) between 50∘ and 115∘. We confirm a previous indication of a broad enhancement around a c.m. energy (√s) of 2.2 GeV at θc.ₘ.=90∘ in the scaled differential cross section, s⁷ dσ/dt. Our data show the angular dependence of this enhancement as the scaling region is approached in the kinematic region from 70∘ to 105∘.

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