The dipole representation of vector meson electroproduction beyond leading twist

Details The dipole representation of vector meson electroproduction beyond leading twist The dipole representation of vector meson electroproduction beyond leading twist

2012-04-10

arxiv.org/abs/1204.2281v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

63 pages, 18 figures

Scientific paper

We link the recent computation beyond leading twist of the impact factor of the transition gamma*T -> rhoT performed in the light-cone collinear approach, to the dipole picture by expressing the hard part of the process through its Fourier transform in coordinate space. We show that in the Wandzura-Wilczek approximation the impact factor up to twist 3 factorises in the wave function of the photon combined with the distribution amplitudes of the rho-meson and the colour dipole scattering amplitude with the t-channel gluons. We show also that beyond the Wandzura-Wilczek approximation, the hard contribution of the amplitude still exhibits the signature of the interaction of a single colour dipole with the t-channel gluons. This result allows a phenomenological approach of the helicity amplitudes of the leptoproduction of vector meson, by combining our results to a dipole/target scattering amplitude model.

Affiliated with

Also associated with

No associations

Rating

The dipole representation of vector meson electroproduction beyond leading twist 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 The dipole representation of vector meson electroproduction beyond leading twist, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The dipole representation of vector meson electroproduction beyond leading twist will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-716685