Measurement of exclusive pion pair production in proton–proton collisions at √s=7TeV with the ATLAS detector
Name:
s10052-023-11700-x.pdf
Size:
5.424Mb
Format:
PDF
Description:
Final Published Version
Affiliation
Department of Physics, University of ArizonaIssue Date
2023-07-17Metadata
Show full item recordPublisher
Institute for IonicsCitation
Aad, G., Abbott, B., Abbott, D.C. et al. Measurement of exclusive pion pair production in proton–proton collisions at sqrt s = 7 TeV with the ATLAS detector. Eur. Phys. J. C 83, 627 (2023). https://doi.org/10.1140/epjc/s10052-023-11700-xJournal
European Physical Journal CRights
© CERN for the benefit of the ATLAS collaboration 2023. This article is licensed under a Creative Commons Attribution 4.0 International License.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
The exclusive production of pion pairs in the process pp→ ppπ+π- has been measured at s=7TeV with the ATLAS detector at the LHC, using 80μb-1 of low-luminosity data. The pion pairs were detected in the ATLAS central detector while outgoing protons were measured in the forward ATLAS ALFA detector system. This represents the first use of proton tagging to measure an exclusive hadronic final state at the LHC. A cross-section measurement is performed in two kinematic regions defined by the proton momenta, the pion rapidities and transverse momenta, and the pion–pion invariant mass. Cross-section values of 4.8±1.0(stat)-0.2+0.3(syst)μb and 9±6(stat)-2+2(syst)μb are obtained in the two regions; they are compared with theoretical models and provide a demonstration of the feasibility of measurements of this type. © 2023, The Author(s).Note
Open access journalISSN
1434-6044Version
Final Published VersionScopus Count
Collections
Except where otherwise noted, this item's license is described as © CERN for the benefit of the ATLAS collaboration 2023. This article is licensed under a Creative Commons Attribution 4.0 International License.