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Measurement of the Inelastic Proton-Proton Cross Section at root s=13 TeV with the ATLAS Detector at the LHC
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-8913-0981
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Number of Authors: 28582016 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 117, no 8, article id 182002Article in journal (Refereed) Published
Abstract [en]

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 s 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<|η|<3.86) of the detector. A cross section of 68.1±1.4 mb is measured in the fiducial region ξ=MX2/s>10-6, where MX is the larger invariant mass of the two hadronic systems separated by the largest rapidity gap in the event. In this ξ range the scintillators are highly efficient. For diffractive events this corresponds to cases where at least one proton dissociates to a system with MX>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.

Place, publisher, year, edition, pages
American Physical Society, 2016. Vol. 117, no 8, article id 182002
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:kth:diva-201809DOI: 10.1103/PhysRevLett.117.182002ISI: 000390226100002Scopus ID: 2-s2.0-8499483169OAI: oai:DiVA.org:kth-201809DiVA, id: diva2:1074920
Projects
ATLAS Collaboration
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Swedish Research Council
Note

QC 20170216

Available from: 2017-02-16 Created: 2017-02-16 Last updated: 2017-11-29Bibliographically approved

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Lund-Jensen, BengtSidebo, P. EdvinStrandberg, Jonas

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