Large-t elastic scattering at the Cern SPS collider at s\sqrt s = 630 GeV

none28Proton-antiproton elastic scattering was measured at the centre-of-mass energy s = 630 GeV in the four-momentum transfer range 0.7 ⩽ − t ⩽ 2.2 GeV2. The new data confirm our previous results at s = 546 GeV on the presence of a break in the t-distribution at −t ≃ 0.9 GeV2 which is followed by a shoulder, and extend the momentum transfer range to larger values. The t-dependence of the differential cross section beyond the break is discussed.D. Bernard;M. Bozzo;P. Braccini;F. Carbonara;R. Castaldi;F. Cervelli;G. Chiefari;E. Drago;M. Haguenauer;V. Innocente;P. Kluit;B. Koene;S. Lanzano;G. Matthiae;L. Merola;M. Napolitano;V. Palladino;G. Sanguinetti;P. Scampoli;S. Scapellato;G. Sciacca;G. Sette;R. v. Swol;J. Timmermans;C. Vannini;J. Velasco;P. Verdini;F. ViscoD., Bernard; Bozzo, Marco; P., Braccini; F., Carbonara; R., Castaldi; F., Cervelli; G., Chiefari; E., Drago; M., Haguenauer; V., Innocente; P., Kluit; B., Koene; S., Lanzano; G., Matthiae; L., Merola; M., Napolitano; V., Palladino; G., Sanguinetti; P., Scampoli; S., Scapellato; G., Sciacca; Sette, Giuseppe; R. v., Swol; J., Timmermans; C., Vannini; J., Velasco; P., Verdini; F., Visc