Measurement of exclusive pion pair production in proton-proton collisions at √s = 7 TeV with the ATLAS detector

ATLAS Collaboration; Paul Newman

doi:10.1140/epjc/s10052-023-11700-x

Measurement of exclusive pion pair production in proton-proton collisions at √s = 7 TeV with the ATLAS detector

ATLAS Collaboration, Paul Newman

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

43 Downloads (Pure)

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 o}f 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.

Original language	English
Article number	627
Number of pages	28
Journal	European Physical Journal C
Volume	83
DOIs	https://doi.org/10.1140/epjc/s10052-023-11700-x
Publication status	Published - 17 Jul 2023

Bibliographical note

21 pages (not including ATLAS author list), 10 figures, 5 tables, submitted to EPJC. Figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-07/. Version v2 added link to public web page of results

Keywords

hep-ex

Access to Document

10.1140/epjc/s10052-023-11700-xLicence: Creative Commons: Attribution (CC BY)

ATLAS2023MeasurementExclusiveFinal published version, 4.77 MBLicence: Creative Commons: Attribution (CC BY)

Cite this

@article{3ba09982a0274fddbfcd849325e2c372,

title = "Measurement of exclusive pion pair production in proton-proton collisions at √s = 7 TeV with the ATLAS detector",

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.",

keywords = "hep-ex",

author = "{ATLAS Collaboration} and Paul Newman",

note = " 21 pages (not including ATLAS author list), 10 figures, 5 tables, submitted to EPJC. Figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-07/. Version v2 added link to public web page of results",

year = "2023",

month = jul,

day = "17",

doi = "10.1140/epjc/s10052-023-11700-x",

language = "English",

volume = "83",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer",

}

TY - JOUR

T1 - Measurement of exclusive pion pair production in proton-proton collisions at √s = 7 TeV with the ATLAS detector

AU - ATLAS Collaboration

AU - Newman, Paul

N1 - 21 pages (not including ATLAS author list), 10 figures, 5 tables, submitted to EPJC. Figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-07/. Version v2 added link to public web page of results

PY - 2023/7/17

Y1 - 2023/7/17

N2 - 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.

AB - 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.

KW - hep-ex

U2 - 10.1140/epjc/s10052-023-11700-x

DO - 10.1140/epjc/s10052-023-11700-x

M3 - Article

SN - 1434-6044

VL - 83

JO - European Physical Journal C

JF - European Physical Journal C

M1 - 627

ER -

Measurement of exclusive pion pair production in proton-proton collisions at √s = 7 TeV with the ATLAS detector

Abstract

Bibliographical note

Keywords

Access to Document

Fingerprint

Cite this