CERN-LHC. Measurement of the elastic differential cross section in
proton-proton interactions at a centre-of-mass energy of 7 TeV. The data,
which cover the |t| range 0.005-0.2 GeV**2, were collected using Roman
Pot detectors very close to the outgoing beam in October 2011, allowing
the precise extrapolation down to the optical point, t=0, and hence the
derivation of the elastic as well as the total cross section via the
An earler publication (CERN-PH-EP-2011-101,EPL 95(2011)41001) reports
measurements in the higher |t| range from 0.36-2.5 GeV**2.