Measurement of the total cross section from elastic scattering in pp collisions at s=8 TeV with the ATLAS detectorShow others and affiliations
Number of Authors: 28442016 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 761, p. 158-178Article in journal (Refereed) Published
Abstract [en]
A measurement of the total pp cross section at the LHC at s=8 TeV is presented. An integrated luminosity of 500 μb−1 was accumulated in a special run with high-β⋆ beam optics to measure the differential elastic cross section as a function of the Mandelstam momentum transfer variable t. The measurement is performed with the ALFA sub-detector of ATLAS. Using a fit to the differential elastic cross section in the −t range from 0.014 GeV2 to 0.1 GeV2 to extrapolate t→0, the total cross section, σtot(pp→X), is measured via the optical theorem to beσtot(pp→X)=96.07±0.18(stat.)±0.85(exp.)±0.31(extr.)mb, where the first error is statistical, the second accounts for all experimental systematic uncertainties and the last is related to uncertainties in the extrapolation t→0. In addition, the slope of the exponential function describing the elastic cross section at small t is determined to be B=19.74±0.05(stat.)±0.23(syst.)GeV−2.
Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 761, p. 158-178
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-202314DOI: 10.1016/j.physletb.2016.08.020ISI: 000384469900024Scopus ID: 2-s2.0-85041793094OAI: oai:DiVA.org:kth-202314DiVA, id: diva2:1075760
Note
QC 20170221
2017-02-212017-02-212024-03-15Bibliographically approved