Position Space Interpretation for Generalized Parton Distributions
Position Space Interpretation for Generalized Parton Distributions
Position Space Interpretation for Generalized Parton Distributions
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Deeply Virtual Compton Scattering (DVCS)<br />
T µν<br />
∫<br />
= i<br />
d 4 z e i¯q·z 〈 p ′ ∣ ∣∣<br />
TJ µ ( − z 2<br />
)<br />
( J ν z<br />
)∣ ∣∣<br />
p〉<br />
2<br />
Bj<br />
↩→<br />
gµν ⊥<br />
2<br />
∫ 1<br />
−1<br />
(<br />
)<br />
1<br />
dx<br />
x−ξ+iε + 1<br />
H(x, ξ, ∆ 2 )ū(p ′ )γ + u(p) + ...<br />
x+ξ−iε<br />
back ¯q = (q+q ′ )/2 ∆ = p ′ −p x Bj ≡ −q 2 /2p·q = 2ξ(1+ξ)<br />
<strong>Position</strong> <strong>Space</strong> <strong>Interpretation</strong> <strong>for</strong> <strong>Generalized</strong> <strong>Parton</strong> <strong>Distributions</strong> – p.55/55
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