Measurement of the total cross section from elastic scattering in pp collisions at √s=8 TeV with the ATLAS detector

Mullier, Geoffrey; Haug, Sigve; Weber, Michael; Meloni, Federico; Cervelli, Alberto; Beck, Hans Peter; Stucci, Stefania; Ereditato, Antonio (2016). Measurement of the total cross section from elastic scattering in pp collisions at √s=8 TeV with the ATLAS detector. Physics letters. B, 761, pp. 158-178. Elsevier 10.1016/j.physletb.2016.08.020

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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, σ tot (pp→X) , is measured via the optical theorem to be: σ tot (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.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Haug, Sigve; Weber, Michael and Beck, Hans Peter

Subjects:

500 Science > 530 Physics
500 Science > 510 Mathematics

ISSN:

0370-2693

Publisher:

Elsevier

Language:

English

Submitter:

Annette Krebs-Wegenast

Date Deposited:

20 Jul 2017 09:48

Last Modified:

20 Jul 2017 09:48

Publisher DOI:

10.1016/j.physletb.2016.08.020

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwähnt.

BORIS DOI:

10.7892/boris.99922

URI:

https://boris.unibe.ch/id/eprint/99922

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