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10.1016-j.nuclphysb.2014.10.019.pdf (2.14 MB)

Measurement of the total cross section from elastic scattering in pp collisions at vs = 7 TeV with the ATLAS detector

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journal contribution
posted on 2023-06-09, 06:04 authored by Benedict AllbrookeBenedict Allbrooke, Lily AsquithLily Asquith, Alessandro CerriAlessandro Cerri, C A Chavez Barajas, Antonella De SantoAntonella De Santo, Fabrizio SalvatoreFabrizio Salvatore, I Santoyo Castillo, K Suruliz, Mark SuttonMark Sutton, Iacopo Vivarelli, The ATLAS Collaboration
A measurement of the total pp cross section at the LHC at vs = 7 TeV is presented. In a special run with high-ß? beam optics, an integrated luminosity of 80 µb-¹ was accumulated in order 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 0.01 GeV2 to 0.1 GeV2 to extrapolate to |t|?0, the total cross section, stot(pp?X), is measured via the optical theorem to be: stot(pp?X)=95.35±0.38(stat.)±1.25(exp.)±0.37(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 to |t|?0. In addition, the slope of the elastic cross section at small |t| is determined to be B=19.73±0.14(stat.)±0.26(syst.) GeV-2.

Funding

ATLAS; G0275; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/I006048/1

History

Publication status

  • Published

File Version

  • Published version

Journal

Nuclear Physics B

ISSN

0550-3213

Publisher

Elsevier

Volume

889

Page range

486-548

Department affiliated with

  • Physics and Astronomy Publications

Research groups affiliated with

  • Experimental Particle Physics Research Group Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2017-05-03

First Open Access (FOA) Date

2017-05-03

First Compliant Deposit (FCD) Date

2017-05-03

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