Differential cross sections for K- radiative capture in flight on the proton, leading to the γΛ and γΣ0 final states, have been measured at eight K- momenta between 514 and 750 MeV/c. The data were obtained with the Crystal Ball multiphoton spectrometer installed at the separated K/π beam line C6 of the BNL Alternating Gradient Synchrotron. The results substantially improve the existing experimental data available for studying radiative decays of excited hyperon states. An exploratory theoretical analysis is performed within the Regge-plus-resonance approach. According to this analysis, the γΣ0 final state is dominated by hyperon-resonance exchange and hints at an important role for a resonance in the mass region of 1700 MeV. In the γΛ final state, in contrast, the resonant contributions account for only half the strength, and the data suggest the importance of a resonance in the mass region of 1550 MeV.
Prakhov, S, Vancraeyveld, P, Phaisangittisakul, N, Nefkens, BMK, Bekrenev, V, Briscoe, WJ, De Cruz, L, Isenhower, D, Knecht, N, Koulbardis, A, Kozlenko, N, Kruglov, S, Lolos, G, Lopatin, I, Marušić, A, McDonald, S, Papandreou, Z, Peaslee, D, Price, JW, Ryckebusch, J, Sadler, M, Shafi, A, Starostin, A, Staudenmaier, HM, Strakovsky, II, Supek, I & Van Cauteren, T 2010, 'Measurement of K-p radiative capture to γΛ and γΣ0 for pK- between 514 and 750 MeV/c', Physical Review C, vol. 82, no. 1, 015201. <http://dx.doi.org/10.1103/PhysRevC.82.015201>
Prakhov, S., Vancraeyveld, P., Phaisangittisakul, N., Nefkens, BMK., Bekrenev, V., Briscoe, WJ., De Cruz, L., Isenhower, D., Knecht, N., Koulbardis, A., Kozlenko, N., Kruglov, S., Lolos, G., Lopatin, I., Marušić, A., McDonald, S., Papandreou, Z., Peaslee, D., Price, JW., ... Van Cauteren, T. (2010). Measurement of K-p radiative capture to γΛ and γΣ0 for pK- between 514 and 750 MeV/c. Physical Review C, 82(1), Article 015201. http://dx.doi.org/10.1103/PhysRevC.82.015201
@article{ca3ad57ea0e5492c9853044fe3bc5987,
title = "Measurement of K-p radiative capture to γΛ and γΣ0 for pK- between 514 and 750 MeV/c",
abstract = "Differential cross sections for K- radiative capture in flight on the proton, leading to the γΛ and γΣ0 final states, have been measured at eight K- momenta between 514 and 750 MeV/c. The data were obtained with the Crystal Ball multiphoton spectrometer installed at the separated K/π beam line C6 of the BNL Alternating Gradient Synchrotron. The results substantially improve the existing experimental data available for studying radiative decays of excited hyperon states. An exploratory theoretical analysis is performed within the Regge-plus-resonance approach. According to this analysis, the γΣ0 final state is dominated by hyperon-resonance exchange and hints at an important role for a resonance in the mass region of 1700 MeV. In the γΛ final state, in contrast, the resonant contributions account for only half the strength, and the data suggest the importance of a resonance in the mass region of 1550 MeV.",
keywords = "HYPERON RESONANCES, CONSISTENT, PROTON, KAON PHOTOPRODUCTION",
author = "Sergey Prakhov and Pieter Vancraeyveld and N Phaisangittisakul and BMK Nefkens and V Bekrenev and WJ Briscoe and {De Cruz}, Lesley and D Isenhower and N Knecht and A Koulbardis and N Kozlenko and S Kruglov and G Lolos and I Lopatin and A Maru{\v s}i{\'c} and S McDonald and Z Papandreou and D Peaslee and JW Price and Jan Ryckebusch and M Sadler and A Shafi and A Starostin and HM Staudenmaier and II Strakovsky and I Supek and {Van Cauteren}, Tim",
year = "2010",
language = "English",
volume = "82",
journal = "Physical Review C",
issn = "0556-2813",
publisher = "American Physical Society",
number = "1",
}