<div class="csl-bib-body">
<div class="csl-entry">Bergauer, T., Fabjan, C., Friedl, M., Frühwirth, R., Jeitler, M., Krammer, M., Wulz, C.-E., & CMS Collaboration. (2012). Search for exclusive or semi-exclusive γγ production and observation of exclusive and semi-exclusive e<sup>+</sup>e<sup>−</sup> production in pp collisions at √s = 7 TeV. <i>Journal of High Energy Physics</i>, <i>2012</i>(11), Article 80. https://doi.org/10.1007/jhep11(2012)080</div>
</div>
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dc.identifier.issn
1029-8479
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/164485
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dc.description.abstract
A search for exclusive or semi-exclusive γγ production, pp → p⁽*⁾ + γγ + p⁽*⁾ (where p* stands for a diffractively-dissociated proton), and the observation of exclusive and semi-exclusive e⁺e⁻ production, pp → p⁽*⁾ + e⁺e⁻ + p⁽*⁾, in proton-proton collisions at √s = 7 TeV, are presented. The analysis is based on a data sample corresponding to an integrated luminosity of 36 pb⁻¹ recorded by the CMS experiment at the LHC at low instantaneous luminosities. Candidate γγ or e⁺e⁻ events are selected by requiring the presence of two photons or a positron and an electron, each with transverse energy ET > 5.5 GeV and pseudorapidity |η| < 2.5, and no other particles in the region |η| < 5.2. No exclusive or semi-exclusive diphoton candidates are found in the data. An upper limit on the cross section for the reaction pp → p⁽*⁾ + γγ + p⁽*⁾, within the above kinematic selections, is set at 1.18 pb at 95% confidence level. Seventeen exclusive or semi-exclusive dielectron candidates are observed, with an estimated background of 0.85 ± 0.28 (stat.) events, in agreement with the QED-based prediction of 16.3 ± 1.3 (syst.) events.
en
dc.language.iso
en
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dc.publisher
SPRINGER
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dc.relation.ispartof
Journal of High Energy Physics
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dc.subject
Nuclear and High Energy Physics
en
dc.subject
Hadron-Hadron Scattering
en
dc.subject
pp collisions
en
dc.title
Search for exclusive or semi-exclusive γγ production and observation of exclusive and semi-exclusive e⁺e⁻ production in pp collisions at √s = 7 TeV
en
dc.type
Artikel
de
dc.type
Article
en
dc.type.category
Original Research Article
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tuw.container.volume
2012
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tuw.container.issue
11
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tuw.journal.peerreviewed
true
-
tuw.peerreviewed
true
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wb.publication.intCoWork
International Co-publication
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tuw.researchTopic.id
Q3
-
tuw.researchTopic.id
X1
-
tuw.researchTopic.name
Quantum Modelling and Simulation
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tuw.researchTopic.name
außerhalb der gesamtuniversitären Forschungsschwerpunkte
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tuw.researchTopic.value
30
-
tuw.researchTopic.value
70
-
dcterms.isPartOf.title
Journal of High Energy Physics
-
tuw.publication.orgunit
E141-03 - Forschungsbereich Nuclear and Particle Physics
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tuw.publisher.doi
10.1007/jhep11(2012)080
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dc.identifier.articleid
80
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dc.identifier.eissn
1029-8479
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dc.description.numberOfPages
35
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tuw.author.orcid
0000-0002-0054-3369
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tuw.author.orcid
0000-0001-9226-5812
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wb.sci
true
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wb.sciencebranch
Physik, Mechanik, Astronomie
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wb.sciencebranch.oefos
12
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wb.facultyfocus
Fundamentale Wechselwirkungen
de
wb.facultyfocus
Fundamental Interactions
en
wb.facultyfocus.faculty
E130
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dc.contributor.authorgroup
CMS Collaboration
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item.languageiso639-1
en
-
item.openairecristype
http://purl.org/coar/resource_type/c_2df8fbb1
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item.fulltext
no Fulltext
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item.openairetype
research article
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item.grantfulltext
none
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item.cerifentitytype
Publications
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crisitem.author.dept
E141 - Atominstitut
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crisitem.author.dept
E141 - Atominstitut
-
crisitem.author.dept
E141 - Atominstitut
-
crisitem.author.dept
E105 - Institut für Stochastik und Wirtschaftsmathematik