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Title: Evidence for non-exponential elastic proton-proton differential cross-section at low |t| and $$\sqrt{s}$$ = 8 TeV by TOTEM

Journal Article · · Nuclear Physics. B
 [1]
  1. Univ. of West Bohemia, Pilsen (Czech Republic). et al.
+ Show Author Affiliations

The TOTEM experiment has made a precise measurement of the elastic proton–proton differential cross-section at the centre-of-mass energy √s = 8 TeV based on a high-statistics data sample obtained with the β* = 90 m optics. Both the statistical and systematic uncertainties remain below 1%, except for the t -independent contribution from the overall normalisation. This unprecedented precision allows to exclude a purely exponential differential cross-section in the range of four-momentum transfer squared 0.027 < |t| < 0.2 GeV2 with a significance greater than 7 σ. Two extended parametrisations, with quadratic and cubic polynomials in the exponent, are shown to be well compatible with the data. As a result, using them for the differential cross-section extrapolation to t=0, and further applying the optical theorem, yields total cross-section estimates of (101.5 ± 2.1) mb and (101.9 ± 2.1) mb, respectively, in agreement with previous TOTEM measurements.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Contributing Organization:
TOTEM Collaboration
Grant/Contract Number:
NK101438; AC03-76SF00515
OSTI ID:
1228044
Journal Information:
Nuclear Physics. B, Vol. 899, Issue C; ISSN 0550-3213
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 88 works
Citation information provided by
Web of Science

References (14)

Small-angle proton-proton elastic scattering at very high energies (460 GeV2 < s < 2900 GeV2) journal May 1972
Measurement of elastic scattering in antiproton-proton collisions at 52.8 GeV centre-of-mass energy journal September 1982
Measurements of the proton-proton total cross section and small angle elastic scattering at ISR energies journal August 1978
A measurement of p̄p and pp elastic scattering at ISR energies journal December 1984
Low momentum transfer elastic scattering at the CERN proton-antiproton collider journal November 1984
Measurement of the Nuclear Slope Parameter of the p p ¯ Elastic-Scattering Distribution at s = 1800 GeV journal August 1988
Measurement of ρ, the ratio of the real to the imaginary part of the p ¯ p forward elastic-scattering amplitude, at √ s =1.8 TeV journal April 1992
Measurement of small angle antiproton-proton elastic scattering at √ s =546 and 1800 GeV journal November 1994
First measurement of the total proton-proton cross-section at the LHC energy of \chem{\sqrt{s} = 7\,TeV} journal October 2011
Measurement of proton-proton elastic scattering and total cross-section at \chem{\sqrt {s} = 7\,TeV} journal January 2013
Measurement of the total cross section from elastic scattering in pp collisions at s = 7   TeV with the ATLAS detector journal December 2014
Performance of the Totem Detectors at the lhc journal December 2013
Where to stick your data points: The treatment of measurements within wide bins
  • Lafferty, G. D.; Wyatt, T. R.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 355, Issue 2-3 https://doi.org/10.1016/0168-9002(94)01112-5
journal February 1995
Benchmarks for the Forward Observables at RHIC, the Tevatron-Run II, and the LHC journal October 2002

Cited By (20)

Recent Results from the CERN LHC Experiment TOTEM: Implications for Odderon Exchange journal January 2019
Some Recent Results on High-Energy Proton Interactions journal January 2019
Measurement of elastic pp scattering at $$\sqrt{\hbox {s}} = \hbox {8}$$ s = 8  TeV in the Coulomb–nuclear interference region: determination of the $$\mathbf {\rho }$$ ρ -parameter and the total cross-section journal November 2016
Implications of the ρ(s) measurements by TOTEM at the LHC journal November 2018
Unified description of LHC data on elastic pp scattering journal December 2019
The size seems to matter or where lies the “asymptopia”? journal May 2018
Elastic and diffractive scatterings in the LHC era journal August 2018
Forward scattering amplitudes of pp and ${\rm{p}}\bar{{\rm{p}}}$ with crossing symmetry and scaling properties journal October 2019
Evaluation of entanglement entropy in high energy elastic scattering journal October 2019
Odderon and proton substructure from a model-independent Lévy imaging of elastic pp and $$p\bar{p}$$ p p ¯ collisions journal January 2019
Analysis of pp and p̄p elastic scatterings based on theoretical bounds in high-energy physics: An update journal October 2017
First measurement of elastic, inelastic and total cross-section at $$\sqrt{s}=13$$ s = 13  TeV by TOTEM and overview of cross-section data at LHC energies: TOTEM Collaboration journal February 2019
New physics from TOTEM’s recent measurements of elastic and total cross sections journal April 2019
Diffractive excitation in p p and p A collisions at high energies journal July 2019
Rapidity gap survival in enhanced Pomeron scheme journal January 2018
Analysis of $pp$ and $\bar{p}p$ Elastic Scattering Based on Theoretical Bounds in High-Energy Physics: an Update text January 2017
The Size Seems to Matter or Where Lies the "Asymptopia"? text January 2018
Elastic and diffractive scattering in the LHC era text January 2019
Unified description of LHC data on elastic $pp$ scattering text January 2019
Evaluation of Entanglement Entropy in High Energy Elastic Scattering text January 2019

Linked Research (2)

Figures / Tables (16)

Table 1(p. 5)table Table 1
Fig. 1(p. 7)figure Fig. 1
Fig. 2(p. 7)figure Fig. 2
Table 2(p. 8)table Table 2
Fig. 3(p. 9)figure Fig. 3
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Fig. 9(p. 14)figure Fig. 9
Table 3(p. 15)table Table 3
Fig. 10(p. 16)figure Fig. 10
Fig. 11(p. 17)figure Fig. 11
Fig. 12(p. 18)figure Fig. 12
Table 4(p. 18)table Table 4

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