Why Studying n- DVCS ? Eric Voutier E H H F ) ( 4 ~ ) ( ) ( ) ( ) ( 2 2 2 1 1 t F M t t F t F t F C I n n-DVCS gives access to the least known and constrained GPD, E 0 because F 1 (t) is small 0 because of cancelation of u and d quarks Sensitivity of the difference of polarized cross sections to the angular momentum of quarks
Eric Voutier. Why Studying n-DVCS ?. 0 because F 1 (t) is small. 0 because of cancelation of u and d quarks. Sensitivity of the difference of polarized cross sections to the angular momentum of quarks. n-DVCS gives access to the least known and constrained GPD, E. Eric Voutier. - PowerPoint PPT Presentation
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Why Studying n-DVCS ?Eric Voutier
EHHF )(4
~)()()()( 22211 tF
M
ttFtFtFC I
n
n-DVCS gives access to the least known and constrained GPD, E
0 because F1(t) is small
0 because of cancelation of u and d quarks
Sensitivity of the difference of polarized cross sections to the angular momentum of quarks
How to Measure n-DVCS ?Eric Voutier
E03-106 experiment in Hall A is an exploratory measurement ofn-DVCS in the valence region
Triple Coincidence Experiment (e,e’n)
Neutron detection is a very involved matter : in-situ efficiencies and contaminations should be mastered large efficiencies should be achieved…
Possible opportunity for target spin asymmetries
Double Coincidence Experiment (e,e’)
Separation of coherent and incoherent channels
Triple Coincidence Experiment (e,e’(A-1))
Neutron tagging via detection of the recoiling residual system