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Measurement of exclusive pion pair production in proton–proton collisions at √s = 7 TeV with the ATLAS detector ATLAS Collaboration
Abstract
The exclusive production of pion pairs in the process pp → ppπ+π− has been measured at √s = 7 TeV with the ATLAS detector at the LHC, using 80 µb−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) +0.3 −0.2 (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.
Item Metadata
| Title |
Measurement of exclusive pion pair production in proton–proton collisions at √s = 7 TeV with the ATLAS detector
|
| Creator | |
| Publisher |
Springer Berlin Heidelberg
|
| Date Issued |
2023-07-17
|
| Description |
The exclusive production of pion pairs in the process pp → ppπ+π− has been measured at √s = 7 TeV
with the ATLAS detector at the LHC, using 80 µb−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) +0.3 −0.2 (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.
|
| Genre | |
| Type | |
| Language |
eng
|
| Date Available |
2023-08-08
|
| Provider |
Vancouver : University of British Columbia Library
|
| Rights |
Attribution 4.0 International (CC BY 4.0)
|
| DOI |
10.14288/1.0435090
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| URI | |
| Affiliation | |
| Citation |
The European Physical Journal C. 2023 Jul 17;83(7):627
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| Publisher DOI |
10.1140/epjc/s10052-023-11700-x
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| Peer Review Status |
Reviewed
|
| Scholarly Level |
Faculty; Researcher; Postdoctoral
|
| Copyright Holder |
The Author(s)
|
| Rights URI | |
| Aggregated Source Repository |
DSpace
|
Item Media
Item Citations and Data
Rights
Attribution 4.0 International (CC BY 4.0)