Journal article

NEAR-THRESHOLD PHOTOPRODUCTION OF ETA-MESONS FROM THE DEUTERON


Authors listKRUSCHE, B; AHRENS, J; ANNAND, JRM; ANTON, G; BECK, R; FUCHS, M; GABLER, AR; HARTER, F; HEJNY, V; KELLIE, JD; MCGEORGE, JC; METAG, V; PEISE, J; ROBIGLANDAU, M; SCHUBERT, A; STROHER, H

Publication year1995

Pages40-46

JournalPhysics Letters B

Volume number358

Issue number1-2

ISSN0370-2693

DOI Linkhttps://doi.org/10.1016/0370-2693(95)00985-T

PublisherElsevier


Abstract
The first measurement of incoherent eta-photoproduction from the deuteron in the threshold region is reported. The experiment was carried out at the MAMI accelerator with the TAPS spectrometer. Total and differential inclusive cross sections have been obtained between 627 and 790 MeV. it is found that the reaction is completely dominated by the incoherent part. An upper limit for coherent eta-photoproduction on the deuteron is deduced, which is substantially lower than the result from an earlier measurement. The incoherent cross section is reproduced in a participant-spectator approach under the assumption of an energy-independent ratio between the neutron and proton cross sections. Best agreement is found for the ratio sigma(n)/sigma(p) approximate to 2/3. The implications for the isospin components of the electromagnetic excitation of the S-11(1535) resonance are discussed.



Citation Styles

Harvard Citation styleKRUSCHE, B., AHRENS, J., ANNAND, J., ANTON, G., BECK, R., FUCHS, M., et al. (1995) NEAR-THRESHOLD PHOTOPRODUCTION OF ETA-MESONS FROM THE DEUTERON, Physics Letters B, 358(1-2), pp. 40-46. https://doi.org/10.1016/0370-2693(95)00985-T

APA Citation styleKRUSCHE, B., AHRENS, J., ANNAND, J., ANTON, G., BECK, R., FUCHS, M., GABLER, A., HARTER, F., HEJNY, V., KELLIE, J., MCGEORGE, J., METAG, V., PEISE, J., ROBIGLANDAU, M., SCHUBERT, A., & STROHER, H. (1995). NEAR-THRESHOLD PHOTOPRODUCTION OF ETA-MESONS FROM THE DEUTERON. Physics Letters B. 358(1-2), 40-46. https://doi.org/10.1016/0370-2693(95)00985-T



Keywords


ELECTROPRODUCTIONPHOTON SPECTROMETERPION-PHOTOPRODUCTIONRESONANCES

Last updated on 2025-02-04 at 07:38