Journal article

Extracting the spin polarizabilities of the proton by measurement of Compton double-polarization observables


Authors listPaudyal, D.; Martel, P. P.; Huber, G. M.; Hornidge, D.; Abt, S.; Achenbach, P.; Adlarson, P.; Afzal, F.; Ahmed, Z.; Akondi, C. S.; Annand, J. R. M.; Arends, H. J.; Bashkanov, M.; Beck, R.; Biroth, M.; Borisov, N. S.; Braghieri, A.; Briscoe, W. J.; Cividini, F.; Costanza, S.; Collicott, C.; Denig, A.; Dieterle, M.; Downie, E. J.; Drexler, P.; Ferretti-Bondy, M., I; Gardner, S.; Garni, S.; Glazier, D., I; Glowa, D.; Gorodnov, I; Gradl, W.; Guenther, S.; Gurevich, G. M.; Hamilton, D.; Heijkenskjoeld, L.; Kaeser, A.; Kashevarov, V. L.; Kay, S.; Keshelashvili, I; Kondratiev, R.; Korolija, M.; Krusche, B.; Lazarev, A. B.; Linturi, J. M.; Lisin, V; Livingston, K.; Lutterer, S.; MacGregor, I. J. D.; Macrae, R.; Mancell, J.; Manley, D. M.; Metag, V; Meyer, W.; Miskimen, R.; Mornacchi, E.; Mullen, C.; Mushkarenkov, A.; Neganov, A. B.; Neiser, A.; Oberle, M.; Ostrick, M.; Otte, P. B.; Pedroni, P.; Polonski, A.; Powell, A.; Prakhov, S. N.; Rajabi, A.; Reicherz, G.; Ron, G.; Rostomyan, T.; Sarty, A.; Sfienti, C.; Sikora, M. H.; Sokhoyan, V; Spieker, K.; Steffen, O.; Strakovsky, I. I.; Strub, Th; Supek, I; Thiel, A.; Thiel, M.; Thomas, A.; Unverzagt, M.; Usov, Yu A.; Wagner, S.; Walford, N. K.; Watts, D. P.; Werthmueller, D.; Wettig, J.; Witthauer, L.; Wolfes, M.; Zana, L.

Publication year2020

JournalPhysical Review C

Volume number102

Issue number3

ISSN2469-9985

eISSN2469-9993

Open access statusHybrid

DOI Linkhttps://doi.org/10.1103/PhysRevC.102.035205

PublisherAmerican Physical Society


Abstract
The Compton double-polarization observable Sigma(2z) has been measured for the first time in the Delta(1232) resonance region using a circularly polarized photon beam incident on a longitudinally polarized proton target at the Mainz Microtron. This paper reports these results, together with the model-dependent extraction of four proton spin polarizabilities from fits to additional asymmetry data using either a dispersion relation calculation or a baryon chiral perturbation theory calculations with the weighted average of these two fits resulting -2.87 0.52, gamma(E1E1) = 2.70 0.43, gamma(E1M2) = in gamma(E1M2) = -0.85 +/- 0.72, and gamma(M1E2) = 2.04 +/- 0.43, in units of 10(-4) fm(4).



Citation Styles

Harvard Citation stylePaudyal, D., Martel, P., Huber, G., Hornidge, D., Abt, S., Achenbach, P., et al. (2020) Extracting the spin polarizabilities of the proton by measurement of Compton double-polarization observables, Physical Review C, 102(3), Article 035205. https://doi.org/10.1103/PhysRevC.102.035205

APA Citation stylePaudyal, D., Martel, P., Huber, G., Hornidge, D., Abt, S., Achenbach, P., Adlarson, P., Afzal, F., Ahmed, Z., Akondi, C., Annand, J., Arends, H., Bashkanov, M., Beck, R., Biroth, M., Borisov, N., Braghieri, A., Briscoe, W., Cividini, F., ...Zana, L. (2020). Extracting the spin polarizabilities of the proton by measurement of Compton double-polarization observables. Physical Review C. 102(3), Article 035205. https://doi.org/10.1103/PhysRevC.102.035205



Keywords


MAINZMAMIMICROTRONSPECTROMETER

Last updated on 2025-10-06 at 11:16