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Measurement of the inelastic proton-proton cross-section at root s=7 TeV with the ATLAS detector
KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
University of Chicago.ORCID-id: 0000-0002-8913-0981
Vise andre og tillknytning
Rekke forfattare: 30522011 (engelsk)Inngår i: Nature Communications, ISSN 2041-1723, E-ISSN 2041-1723, Vol. 2, s. 463-Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The dependence of the rate of proton-proton interactions on the centre-of-mass collision energy, root s, is of fundamental importance for both hadron collider physics and particle astrophysics. The dependence cannot yet be calculated from first principles; therefore, experimental measurements are needed. Here we present the first measurement of the inelastic proton-proton interaction cross-section at a centre-of-mass energy, root s, of 7 TeV using the ATLAS detector at the Large Hadron Collider. Events are selected by requiring hits on scintillation counters mounted in the forward region of the detector. An inelastic crosssection of 60.3 +/- 2.1 mb is measured for xi > 5x10(-6), where xi is calculated from the invariant mass, M(X), of hadrons selected using the largest rapidity gap in the event. For diffractive events, this corresponds to requiring at least one of the dissociation masses to be larger than 15.7 GeV.

sted, utgiver, år, opplag, sider
2011. Vol. 2, s. 463-
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Identifikatorer
URN: urn:nbn:se:kth:diva-41816DOI: 10.1038/ncomms1472ISI: 000294807200005OAI: oai:DiVA.org:kth-41816DiVA, id: diva2:445208
Merknad
QC 20111003. Author count: 3052.Tilgjengelig fra: 2011-10-03 Laget: 2011-10-03 Sist oppdatert: 2017-12-08bibliografisk kontrollert

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