Photoproduction of ω-Mesons at ELSA and the role of azimuthal asymmetries

H. Schmieden (for the CBELSA/TAPS collaboration)

doi:10.1088/1674-1137/33/12/016

Chinese Physics C> 2009, Vol. 33> Issue(12) : 1146-1152 DOI: 10.1088/1674-1137/33/12/016

Photoproduction of ω-Mesons at ELSA and the role of azimuthal asymmetries

H. Schmieden (for the CBELSA/TAPS collaboration)

(Rheinische Friedrich-Wilhelms-Universität, Physikalisches Institut, D-53115 Bonn, Germany)

Abstract
HTML
Reference
Related

PDF

Abstract：
Measurements of ω photoproduction of the Crystal-Barrel/TAPS experiment at the ELSA accelerator of Bonn University are presented which used linearly polarized tagged photon beam from threshold to E_γ=1700 MeV. The azimuthal asymmetries Σ and Σ_π indicate s-channel resonance contributions on top of the established t-channel exchange processes. These findings are further enhanced by a very first measurement of the G-asymmetry which, in addition to the polarized photon beam, also requires a longitudinally polarized proton target. An intuitive interpretation of the specific sensitivity of the azimuthal asymmetries to the reaction mechanisms involved is given.

References

[1]

. Durr S et al (BMW collaboration). Science, 2008, 322:12242. Lohring U, Metsch B, Petry H. Eur. Phys. J. A, 2001, 10:3953. Roberts C. Chin. Phys. C (HEP NP), 2009, 33:4. Capstick S, Roberts W. Prog. Part. Nucl. Phys., 2000, 45:2415. Battaglieri M et al. Phys. Rev. Lett., 2003, 90: 0220026. Ballam J et al. Phys. Rev. D, 1973, 7: 31507. Friman B, Soyeur M. Nucl. Phys. A, 1996, 600: 4778. Barth J et al. Eur. Phys. J. A, 2003, 18: 1179. Ambrozewicz P et al. Phys. Rev. C, 2004, 70: 03520310. Ajaka J et al. Phys. Rev. Lett., 2006, 96: 13200311. Penner G, Mosel U. Phys. Rev. C, 2002, 66: 05521212. Shklyar V et al. Phys. Rev. C, 2005, 71: 05520613. ZHAO Q, Al-Khalili J S, Cole P L. Phys. Rev. C, 2005, 71:05400414. Schilling K, Seyboth P, Wolf G E. Nucl. Phys. B, 1970, 15:397|412; 18: 33215. Sarantsev A V et al. Eur. Phys. J. A, 2009, 39: 61|7016. Titov A, Kampfer B. Phys. Rev. C, 2008, 78: 03820117. ZHAO Q. Phys. Rev. C, 2001, 63: 02520318. Titov A, Lee T-S H. Phys. Rev. C, 2002, 66: 01520419. Burkardt M, Miller A, Nowak W-D, e-Print:arXiv:0812.2208 [hep-ph]20. Beck R (for the CBELSA/TAPS collaboration). Chin.Phys. C (HEP NP), 2009, 33:21. Elsner D et al. Eur. Phys. J. A, 2009 39: 37322. Thoma U (for the CBELSA/TAPS collaboration). Chin.Phys. C (HEP NP), 2009, 33:23. Klein Frank et al. Phys. Rev. D, 2008, 78: 11710124. Dutz H et al. Nucl. Instrum. Methods A, 1995, 356: 111;Nucl. Instrum. Methods A, 1998, 418: 23325. Eberhardt H. Doctoral Thesis, Bonn, 2009. in preparation26. Junkersfeld J et al. Eur. Phys. J. A, 2007, 31: 36527. Nanova M et al. Eur. Phys. J. A, 2008, 35: 333

Access

Get Citation

H. Schmieden (for the CBELSA/TAPS collaboration). Photoproduction of ω-Mesons at ELSA and the role of azimuthal asymmetries[J]. Chinese Physics C, 2009, 33(12): 1146-1152. doi: 10.1088/1674-1137/33/12/016

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2009-08-07
Revised: 1900-01-01

Article Metric

Article Views(3581)
PDF Downloads(652)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142