The CLAS detector was used to obtain the first ever measurement of the electromagnetic decay of the Σ*+(1385) from the reaction γp → K0 Σ*+(1385). A real photon beam with a maximum energy of 3.8 GeV was incident on a liquid-hydrogen target, resulting in the photoproduction of the kaon and Σ* hyperon. Kinematic fitting was used to separate the reaction channel from the background processes. The fitting algorithm exploited a new method to kinematically fit neutrons in the CLAS detector, leading to the partial width measurement of 250.0 ± 56.9(stat)-41.2+34.3(sys) keV. A U-spin symmetry test using the SU(3) flavor-multiplet representation yields predictions for the Σ*+(1385) → Σ+γ and Σ*0(1385) → Λγ partial widths that agree with the experimental measurements.
Keller, D., et al. "Branching Ratio of the Electromagnetic Decay of the Σ<sup>+</sup>(1385)." Physical Review. D, Particles, Fields, Gravitation and Cosmology, vol. 85, no. 5, Feb. 2012. https://doi.org/10.1103/PhysRevD.85.052004
Keller, D., Hicks, K., Adhikari, K. P., Adikaram, D., Amaryan, M. J., Anghinolfi, M., Baghdasaryan, H., Ball, J., Battaglieri, M., Bedlinskiy, I., Biselli, A. S., Bookwalter, C., Boiarinov, S., Branford, D., Briscoe, W. J., Brooks, W. K., Burkert, V. D., Carman, D. S., ... Zhao, Z. W. (2012). Branching Ratio of the Electromagnetic Decay of the Σ<sup>+</sup>(1385). Physical Review. D, Particles, Fields, Gravitation and Cosmology, 85(5). https://doi.org/10.1103/PhysRevD.85.052004
Keller, D., Hicks, K., Adhikari, K. P., et al., "Branching Ratio of the Electromagnetic Decay of the Σ<sup>+</sup>(1385)," Physical Review. D, Particles, Fields, Gravitation and Cosmology 85, no. 5 (2012), https://doi.org/10.1103/PhysRevD.85.052004
@article{osti_1038240,
author = {Keller, D. and Hicks, K. and Adhikari, K. P. and Adikaram, D. and Amaryan, M. J. and Anghinolfi, M. and Baghdasaryan, H. and Ball, J. and Battaglieri, M. and Bedlinskiy, I. and others},
title = {Branching Ratio of the Electromagnetic Decay of the Σ<sup>+</sup>(1385)},
annote = {The CLAS detector was used to obtain the first ever measurement of the electromagnetic decay of the Σ*+(1385) from the reaction γp → K0 Σ*+(1385). A real photon beam with a maximum energy of 3.8 GeV was incident on a liquid-hydrogen target, resulting in the photoproduction of the kaon and Σ* hyperon. Kinematic fitting was used to separate the reaction channel from the background processes. The fitting algorithm exploited a new method to kinematically fit neutrons in the CLAS detector, leading to the partial width measurement of 250.0 ± 56.9(stat)-41.2+34.3(sys) keV. A U-spin symmetry test using the SU(3) flavor-multiplet representation yields predictions for the Σ*+(1385) → Σ+γ and Σ*0(1385) → Λγ partial widths that agree with the experimental measurements.},
doi = {10.1103/PhysRevD.85.052004},
url = {https://www.osti.gov/biblio/1038240},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
issn = {ISSN 1550-7998},
number = {5},
volume = {85},
place = {United States},
publisher = {American Physical Society (APS)},
year = {2012},
month = {02}}
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 503, Issue 3https://doi.org/10.1016/S0168-9002(03)01001-5
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 440, Issue 2https://doi.org/10.1016/S0168-9002(99)00784-6
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 503, Issue 3https://doi.org/10.1016/s0168-9002(03)01001-5
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 440, Issue 2https://doi.org/10.1016/s0168-9002(99)00784-6