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Beam charge azimuthal asymmetry in deeply virtual compton scattering at HERA II |
| Reference |
Laurent Schoeffel, presented at DIS 2007, Spring 2007 |
| Document |
Conference paper or talk
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| Figures |
(1)
(2)
(11)
| | Tables |
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| Contact |
E. Sauvan, L. Schoeffel |
| Abstract |
For the first time in a collider mode, an azimuthal cross section asymmetry
with respect to the charge of the incoming
lepton beam is reported from a study of exclusive electroproduction of real photons,
e+- p -> e+- g p.
recorded with the H1 detector at HERA,
from the year 2003 till 2007. The analysed data sample corresponds to
an integrated luminosity of 300 pb-1, equally shared in e+ and e- incident lepton charge.
The observed asymmetry is attributed to the interference of the Bethe-Heitler and the
deeply virtual compton
scattering proceses.
It is observed in the kinematic domain
6.5 < Q2 < 80 GeV2 and 30 < W < 140 GeV.
(the figures 3-10 initially released with this preliminary result were in the meantime
published in DVCS HERA II e-p
paper). |
| Links |
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