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Measurement of the inelastic proton-proton cross section at vs=13 TeV with the ATLAS detector at the LHC

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posted on 2023-06-09, 04:14 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, et al. The ATLAS Collaboration
This Letter presents a measurement of the inelastic proton-proton cross section using 60??µb -1 of pp collisions at a center-of-mass energy vs of 13 TeV with the ATLAS detector at the LHC. Inelastic interactions are selected using rings of plastic scintillators in the forward region (2.07<|?|<3.86 ) of the detector. A cross section of 68.1±1.4??mb is measured in the fiducial region ?=M 2 X /s>10 -6 , where M X is the larger invariant mass of the two hadronic systems separated by the largest rapidity gap in the event. In this ? range the scintillators are highly efficient. For diffractive events this corresponds to cases where at least one proton dissociates to a system with M X >13??GeV . The measured cross section is compared with a range of theoretical predictions. When extrapolated to the full phase space, a cross section of 78.1±2.9??mb is measured, consistent with the inelastic cross section increasing with center-of-mass energy.

Funding

STFC Consolidated Grant Supplement; G1316; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/M000753/1

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review Letters

ISSN

0031-9007

Publisher

American Physical Society

Volume

117

Page range

182002

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

2016-11-28

First Open Access (FOA) Date

2016-11-28

First Compliant Deposit (FCD) Date

2016-11-28

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