Theoretical study of incoherent φ photoproduction on a deuteron target
Theoretical study of incoherent φ photoproduction on a deuteron target
复制标题
氘核靶上非相干光产生的理论研究
DOI:
10.1140/epja/i2012-12010-1
复制
发表时间:
2012
期刊:
影响因子:
--
通讯作者:
E.オセット
中科院分区:
文献类型:
--
作者:
関原隆泰;A.M.トレース;慈道大介;E.オセット
We study the photoproduction of φ mesons in deuteron, paying attention to the modification of the cross-section from bound protons to the free ones. For this purpose we take into account Fermi motion in single scattering and rescattering of φ to account for φ absorption on a second nucleon as well as the rescattering of the proton on the neutron. We find that the contribution of the double scattering for φ is much smaller than the typical cross-section of γp→ φpin free space, which implies a very small screening of the φ production in deuteron. The contribution from the proton rescattering, on the other hand, is found to be not negligible compared to the cross-section of γp→ φpin free space, and leads to a moderate reduction of the φ photoproduction cross-section on a deuteron at forward angles if the LEPS set-up is taken into account. The Fermi motion allows contribution of the single scattering in regions forbidden by phase-space in the free case. In particular, we find that for momentum transfer squared close to the maximum value, the Fermi motion changes drastically the shape of dσ/dt, to the point that the ratio of this cross-section to the free one becomes very sensitive to the precise value oftchosen, or the size of the bin used in an experimental analysis. Hence, this particular region oftdoes not seem to be the most indicated to find effects of a possible φ absorption in the deuteron. This reaction is studied theoretically as a function oftand the results are contrasted with recent experiments at LEPS and Jefferson Lab. The effect of the experimental angular cuts at LEPS is also discussed, providing guidelines for future experimental analyses of the reaction.
登录
查看更多内容
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
A. Polyanskiy;M. Hartmann;Y. Kiselev;E. Paryev;M. Büscher;D. Chiladze;S. Dymov;A. Dzyuba;R. Gebel;V. Hejny;B. Kämpfer;I. Keshelashvili;V. Koptev;B. Lorentz;Y. Maeda;S. Merzliakov;S. Mikirtytchiants;M. Nekipelov;H. Ohm;H. Schade;V. Serdyuk;A. Sibirtsev;V. Y. Sinitsyna;H. Stein;H. Ströher;S. Trusov;Y. Valdau;C. Wilkin;P. Wüstner
通讯作者:
P. Wüstner
DOI:
10.1007/bf01298481
发表时间:
1992
期刊:
Zeitschrift für Physik A Hadrons and Nuclei
影响因子:
--
作者:
E. Hernández;E. Oset
通讯作者:
E. Oset
DOI:
10.1016/0375-9474(92)90222-6
发表时间:
1992
期刊:
Nuclear Physics
影响因子:
--
作者:
R. Carrasco;E. Oset;L. L. Salcedo
通讯作者:
L. L. Salcedo
影响因子:
3.1
作者:
T. Rogers;M. Sargsian;M. Strikman
通讯作者:
M. Strikman
DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
V. Magas;L. Roca;E. Oset
通讯作者:
E. Oset