Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2004-07-19
Phys.Rev.Lett. 94 (2005) 072304
Physics
Nuclear Physics
Nuclear Experiment
4 pages, 4 figures, 1 table
Scientific paper
10.1103/PhysRevLett.94.072304
A measurement of the analyzing power $A_y$ of the $\vec{p}d \to (pp) + n$ reaction was carried out at beam energies of 0.5 and 0.8 GeV by detection of a fast forward proton pair of small excitation energy $E_{pp} < 3$ MeV. The kinematically complete experiment made use of the ANKE spectrometer at the internal beam of COSY and a deuterium cluster--jet target. For the first time the $S$--wave dominance in the fast diproton is experimentally demonstrated in this reaction. While at $T_p=0.8$ GeV the measured analyzing power $A_y$ vanishes, it reaches almost unity at $T_p=0.5$ GeV for neutrons scattered at $\theta_n^{c.m.}=167^\circ$. The results are compared with a model taking into account one--nucleon exchange, single scattering and $\Delta$ (1232) excitation in the intermediate state. The model describes fairly well the unpolarized cross section obtained earlier by us and the analyzing power at 0.8 GeV, it fails to reproduce the angular dependence of $A_y$ at 0.5 GeV.
Barsov S.
Dymov S.
Gebel R.
Hartmann Markus
Kacharava A.
No associations
LandOfFree
Measurement of the Analyzing Power in $\vec{p}d \to (pp)n$ \\with a Fast Forward $^1S_0$--Diproton does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Measurement of the Analyzing Power in $\vec{p}d \to (pp)n$ \\with a Fast Forward $^1S_0$--Diproton, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement of the Analyzing Power in $\vec{p}d \to (pp)n$ \\with a Fast Forward $^1S_0$--Diproton will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-535796