Antiproton—proton elastic scattering at from |t| = 0.034 to 0.65 (GeV/c)2

Measurement of the differential cross sectiondσ/dtin elasticpp¯scattering atAbazov1, Abbott2, Acharya3 et al. 2012Phys. Rev. DSelf Cite652260View full textAdd to dashboardCite

“…The elastically scattered protons and antiprotons are tagged with detectors inserted in the beam pipe on either side of the interaction point (IP). Our measurement extends the |t| range previously studied by the CDF (0.025 < |t| < 0.29 GeV 2 ) [11] and by the E710 (0.034 < |t| < 0.65 GeV 2 ) [12] Collaborations at the Tevatron and constitutes the first confirmation of a change in the |t| dependence of dσ(pp → pp)/dt at center-of-mass energy √ s = 1.96 TeV. A similar measurement in pp collisions at √ s = 7.0 TeV has recently been reported by the TOTEM Collaboration [13] showing similar trends for the slope of the differential cross section and for the position of the local diffraction minimum, although the local minimum found in pp elastic scattering is much more pronounced than the kink we observe.…”

“…A fit to the dσ/dt distribution in the range 0.26 < |t| < 0.6 with an exponential function of the form Ae −b|t| yields a logarithmic slope parameter of b = 16.86 ± 0.10 (stat) ± 0.20 (syst) GeV (χ 2 = 6.63 for 7 degrees of freedom). Figure 12 shows a comparison of our results to those obtained at √ s = 1.8 TeV by the CDF and E710 Tevatron Collaborations [11,12], and also to that of the UA4 Collaboration at √ s = 0.546 TeV [27]. Our measurement of the slope parameter agrees within uncertainties with previous measurements by the CDF (b = 16.98 ± 0.25 GeV −2 ) and E710 (b = 16.30 ± 0.30 GeV −2 ) Collaborations.…”

Impact-parameter analysis of TOTEM data at the LHC: Black disk limit exceeded

“…We have analyzed data on pp elastic scattering at ffiffi ffi s p ¼ 23.5; 30.7; 44.7; 52.8; 62.5; 7000 GeV [5,9,10] andpp at ffiffi ffi s p ¼ 53; 546; 1800-1960 GeV [11][12][13][14][15]. The data at jtj ≥ 0.1 GeV 2 were used for analysis.…”

Hadron Structure and Elastic Scattering

“…Most primary entries there except the last two are taken from Refs [22,23] with simple recalculation Z = 1/4Y . The data at Tevatron and LHC energies are taken from Refs [24,25,26]. All results are for pp-scattering except those at 546 and 1800 GeV for pp processes which should be close to pp at these energies.…”