/ nucl-ex arXiv:1409.8445


Measurement of the analysing power in proton-proton elastic scattering at small angles


Bagdasarian, Z. (Julich, Forschungszentrum) ; Chiladze, D. (Julich, Forschungszentrum) ; Dymov, S. (Julich, Forschungszentrum) ; Kacharava, A. (Julich, Forschungszentrum) ; Macharashvili, G. (Dubna, JINR) ; Barsov, S. (St. Petersburg, INP) ; Gebel, R. (Julich, Forschungszentrum) ; Gou, B. (Julich, Forschungszentrum) ; Hartmann, M. (Julich, Forschungszentrum) ; Keshelashvili, I. (Julich, Forschungszentrum) ; Khoukaz, A. (Munster U.) ; Kulessa, P. (Cracow, INP) ; Kulikov, A. (Dubna, JINR) ; Lehrach, A. (Julich, Forschungszentrum) ; Lomidze, N. (Tbilisi State U.) ; Lorentz, B. (Julich, Forschungszentrum) ; Maier, R. (Julich, Forschungszentrum) ; Mchedlishvili, D. (Julich, Forschungszentrum) ; Merzliakov, S. (Julich, Forschungszentrum) ; Mikirtychyants, S. (St. Petersburg, INP) ; Nioradze, M. (Tbilisi State U.) ; Ohm, H. (Julich, Forschungszentrum) ; Papenbrock, M. (Munster U.) ; Prasuhn, D. (Julich, Forschungszentrum) ; Rathmann, F. (Julich, Forschungszentrum) ; Serdyuk, V. (Julich, Forschungszentrum) ; Shmakova, V. (Dubna, JINR) ; Stassen, R. (Julich, Forschungszentrum) ; Stockhorst, H. (Julich, Forschungszentrum) ; Strakovsky, I.I. (George Washington U.) ; Stroher, H. (Julich, Forschungszentrum) ; Tabidze, M. (Tbilisi State U.) ; Taschner, A. (Munster U.) ; Trusov, S. (Moscow State U.) ; Tsirkov, D. (Dubna, JINR) ; Uzikov, Yu. (Dubna, JINR) ; Valdau, Yu. (Bonn U., HISKP) ; Wilkin, C. (University Coll. London) ; Workman, R.L. (George Washington U.)

Pages: 5

Abstract: The proton analysing power in $\vec{p}p$ elastic scattering has been measured at small angles at COSY-ANKE at 796 MeV and five other beam energies between 1.6 and 2.4 GeV using a polarised proton beam. The asymmetries obtained by detecting the fast proton in the ANKE forward detector or the slow recoil proton in a silicon tracking telescope are completely consistent. Although the analysing power results agree well with the many published data at 796 MeV, and also with the most recent partial wave solution at this energy, the ANKE data at the higher energies lie well above the predictions of this solution at small angles. An updated phase shift analysis that uses the ANKE results together with the World data leads to a much better description of these new measurements.
The proton analysing power in p→p elastic scattering has been measured at small angles at COSY-ANKE at 796 MeV and five other beam energies between 1.6 and 2.4 GeV using a polarised proton beam. The asymmetries obtained by detecting the fast proton in the ANKE forward detector or the slow recoil proton in a silicon tracking telescope are completely consistent. Although the analysing power results agree well with the many published data at 796 MeV, and also with the most recent partial wave solution at this energy, the ANKE data at the higher energies lie well above the predictions of this solution at small angles. An updated phase shift analysis that uses the ANKE results together with the World data leads to a much better description of these new measurements.

Web-Page: http://inspirehep.net/record/1319538/files/fig2.png; http://inspirehep.net/record/1319538/files/fig1.png; http://inspirehep.net/record/1319538/files/fig3.png; http://inspirehep.net/record/1319538/files/arXiv:1409.8445.pdf; http://inspirehep.net/record/1319538/files/scoap3-fulltext.pdf


Note: *Brief entry*; *Temporary entry*; 5 pages, 3 figures

Total numbers of views: 1549
Numbers of unique views: 526
DOI: 10.1016/j.physletb.2014.10.054
 Record created 2014-11-05, last modified 2014-11-05


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