Measurement of exclusive γγ → ℓ⁺ℓ⁻ production in proton-proton collisions at √s = 7 TeV with the ATLAS detector
- Autores
- Alconada Verzini, María Josefina; Alonso, Francisco; Arduh, Francisco Anuar; Dova, María Teresa; Monticelli, Fernando Gabriel; Wahlberg, Hernán Pablo; The ATLAS Collaboration
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- This Letter reports a measurement of the exclusive γγ → ℓ⁺ℓ⁻ (ℓ = e, μ) cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV by the ATLAS experiment at the LHC, based on an integrated luminosity of 4.6 fb⁻¹. For the electron or muon pairs satisfying exclusive selection criteria, a fit to the dilepton acoplanarity distribution is used to extract the fiducial cross-sections. The cross-section in the electron channel is determined to be σexcl.γγ → e⁺e⁻ = 0.428 ± 0.035 (stat.) ± 0.018 (syst.) pb for a phase-space region with invariant mass of the electron pairs greater than 24GeV, in which both electrons have transverse momentum pT > 12 GeV and pseudorapidity |η| < 2.4. For muon pairs with invariant mass greater than 20 GeV, muon transverse momentum pT > 10 GeV and pseudorapidity |η| < 2.4, the cross-section is determined to be σexcl.γγ → μ⁺μ⁻ = 0.628 +±0.032 (stat.) ± 0.021 (syst.) pb. When proton absorptive effects due to the finite size of the proton are taken into account in the theory calculation, the measured cross-sections are found to be consistent with the theory prediction.
La lista completa de autores que integran el documento puede consultarse en el archivo.
Facultad de Ciencias Exactas
Instituto de Física La Plata - Materia
-
Ciencias Exactas
Física
Measurement
Physics
proton-proton collisions
electron
muon
pseudorapidity - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/125521
Ver los metadatos del registro completo
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Measurement of exclusive γγ → ℓ⁺ℓ⁻ production in proton-proton collisions at √s = 7 TeV with the ATLAS detectorAlconada Verzini, María JosefinaAlonso, FranciscoArduh, Francisco AnuarDova, María TeresaMonticelli, Fernando GabrielWahlberg, Hernán PabloThe ATLAS CollaborationCiencias ExactasFísicaMeasurementPhysicsproton-proton collisionselectronmuonpseudorapidityThis Letter reports a measurement of the exclusive γγ → ℓ⁺ℓ⁻ (ℓ = e, μ) cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV by the ATLAS experiment at the LHC, based on an integrated luminosity of 4.6 fb⁻¹. For the electron or muon pairs satisfying exclusive selection criteria, a fit to the dilepton acoplanarity distribution is used to extract the fiducial cross-sections. The cross-section in the electron channel is determined to be σ<sup>excl.</sup><sub>γγ → e⁺e⁻</sub> = 0.428 ± 0.035 (stat.) ± 0.018 (syst.) pb for a phase-space region with invariant mass of the electron pairs greater than 24GeV, in which both electrons have transverse momentum p<sub>T</sub> > 12 GeV and pseudorapidity |η| < 2.4. For muon pairs with invariant mass greater than 20 GeV, muon transverse momentum p<sub>T</sub> > 10 GeV and pseudorapidity |η| < 2.4, the cross-section is determined to be σ<sup>excl.</sup><sub>γγ → μ⁺μ⁻</sub> = 0.628 +±0.032 (stat.) ± 0.021 (syst.) pb. When proton absorptive effects due to the finite size of the proton are taken into account in the theory calculation, the measured cross-sections are found to be consistent with the theory prediction.La lista completa de autores que integran el documento puede consultarse en el archivo.Facultad de Ciencias ExactasInstituto de Física La Plata2015-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf242-261http://sedici.unlp.edu.ar/handle/10915/125521enginfo:eu-repo/semantics/altIdentifier/issn/0370-2693info:eu-repo/semantics/altIdentifier/arxiv/1506.07098info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2015.07.069info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:29:49Zoai:sedici.unlp.edu.ar:10915/125521Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:29:49.545SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Measurement of exclusive γγ → ℓ⁺ℓ⁻ production in proton-proton collisions at √s = 7 TeV with the ATLAS detector |
| title |
Measurement of exclusive γγ → ℓ⁺ℓ⁻ production in proton-proton collisions at √s = 7 TeV with the ATLAS detector |
| spellingShingle |
Measurement of exclusive γγ → ℓ⁺ℓ⁻ production in proton-proton collisions at √s = 7 TeV with the ATLAS detector Alconada Verzini, María Josefina Ciencias Exactas Física Measurement Physics proton-proton collisions electron muon pseudorapidity |
| title_short |
Measurement of exclusive γγ → ℓ⁺ℓ⁻ production in proton-proton collisions at √s = 7 TeV with the ATLAS detector |
| title_full |
Measurement of exclusive γγ → ℓ⁺ℓ⁻ production in proton-proton collisions at √s = 7 TeV with the ATLAS detector |
| title_fullStr |
Measurement of exclusive γγ → ℓ⁺ℓ⁻ production in proton-proton collisions at √s = 7 TeV with the ATLAS detector |
| title_full_unstemmed |
Measurement of exclusive γγ → ℓ⁺ℓ⁻ production in proton-proton collisions at √s = 7 TeV with the ATLAS detector |
| title_sort |
Measurement of exclusive γγ → ℓ⁺ℓ⁻ production in proton-proton collisions at √s = 7 TeV with the ATLAS detector |
| dc.creator.none.fl_str_mv |
Alconada Verzini, María Josefina Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo The ATLAS Collaboration |
| author |
Alconada Verzini, María Josefina |
| author_facet |
Alconada Verzini, María Josefina Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo The ATLAS Collaboration |
| author_role |
author |
| author2 |
Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo The ATLAS Collaboration |
| author2_role |
author author author author author author |
| dc.subject.none.fl_str_mv |
Ciencias Exactas Física Measurement Physics proton-proton collisions electron muon pseudorapidity |
| topic |
Ciencias Exactas Física Measurement Physics proton-proton collisions electron muon pseudorapidity |
| dc.description.none.fl_txt_mv |
This Letter reports a measurement of the exclusive γγ → ℓ⁺ℓ⁻ (ℓ = e, μ) cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV by the ATLAS experiment at the LHC, based on an integrated luminosity of 4.6 fb⁻¹. For the electron or muon pairs satisfying exclusive selection criteria, a fit to the dilepton acoplanarity distribution is used to extract the fiducial cross-sections. The cross-section in the electron channel is determined to be σ<sup>excl.</sup><sub>γγ → e⁺e⁻</sub> = 0.428 ± 0.035 (stat.) ± 0.018 (syst.) pb for a phase-space region with invariant mass of the electron pairs greater than 24GeV, in which both electrons have transverse momentum p<sub>T</sub> > 12 GeV and pseudorapidity |η| < 2.4. For muon pairs with invariant mass greater than 20 GeV, muon transverse momentum p<sub>T</sub> > 10 GeV and pseudorapidity |η| < 2.4, the cross-section is determined to be σ<sup>excl.</sup><sub>γγ → μ⁺μ⁻</sub> = 0.628 +±0.032 (stat.) ± 0.021 (syst.) pb. When proton absorptive effects due to the finite size of the proton are taken into account in the theory calculation, the measured cross-sections are found to be consistent with the theory prediction. La lista completa de autores que integran el documento puede consultarse en el archivo. Facultad de Ciencias Exactas Instituto de Física La Plata |
| description |
This Letter reports a measurement of the exclusive γγ → ℓ⁺ℓ⁻ (ℓ = e, μ) cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV by the ATLAS experiment at the LHC, based on an integrated luminosity of 4.6 fb⁻¹. For the electron or muon pairs satisfying exclusive selection criteria, a fit to the dilepton acoplanarity distribution is used to extract the fiducial cross-sections. The cross-section in the electron channel is determined to be σ<sup>excl.</sup><sub>γγ → e⁺e⁻</sub> = 0.428 ± 0.035 (stat.) ± 0.018 (syst.) pb for a phase-space region with invariant mass of the electron pairs greater than 24GeV, in which both electrons have transverse momentum p<sub>T</sub> > 12 GeV and pseudorapidity |η| < 2.4. For muon pairs with invariant mass greater than 20 GeV, muon transverse momentum p<sub>T</sub> > 10 GeV and pseudorapidity |η| < 2.4, the cross-section is determined to be σ<sup>excl.</sup><sub>γγ → μ⁺μ⁻</sub> = 0.628 +±0.032 (stat.) ± 0.021 (syst.) pb. When proton absorptive effects due to the finite size of the proton are taken into account in the theory calculation, the measured cross-sections are found to be consistent with the theory prediction. |
| publishDate |
2015 |
| dc.date.none.fl_str_mv |
2015-10 |
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