Physical Review Letters
We report a measurement of the differential cross section for the γn →π⁻p process from the CLAS detector at Jefferson Laboratory in Hall B for photon energies between 1.0 and 3.5 GeV and pion center-of-mass (c.m.) angles (𝜃 c.m.) between 50° and 115°. We confirm a previous indication of a broad enhancement around a c.m. energy (√ s) of 2.1 GeV at 𝜃c.m. = 90° in the scaled differential cross section s7 dσdt and a rapid falloff in a center-of-mass energy region of about 400 MeV following the enhancement. Our data show an angular dependence of this enhancement as the suggested scaling region is approached for 𝜃c.m. from 70° degrees to 105°.
Original Publication Citation
Chen, W., Mibe, T., Dutta, D. ... Yegneswaran, A., Zhang, J., Zhao, B. (The CLAS Collaboration)(2009). Measurement of the differential cross section for the reaction γn →π⁻p from deuterium. Physical Review Letters, 103(1), 1-6, Article 012301. https://doi.org/10.1103/PhysRevLett.103.012301
0000-0003-1582-2376 (Dodge), 0000-0001-7282-8120 (Hyde-Wright), 0000-0003-2243-6836 (Kuhn), 0000-0001-5416-2900 (Weinstein)
Amaryan, M. J.; Badasaryan, H.; Careccia, S. L.; Dodge, G. E.; Hyde, C. E.; Kuhn, S. E.; Sabatié, F.; Tkachenko, S.; Weinstein, L. B.; Zhang, J.; et al.; and The CLAS Collaboration, "Measurement of the Differential Cross Section for the Reaction γn →π⁻p from Deuterium" (2009). Physics Faculty Publications. 517.