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dc.date.accessioned 2019-12-18T17:13:01Z
dc.date.available 2019-12-18T17:13:01Z
dc.date.issued 2017
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/87669
dc.description.abstract Light-by-light scattering (γγ → γγ) is a quantum-mechanical process that is forbidden in the classical theory of electrodynamics. This reaction is accessible at the Large Hadron Collider thanks to the large electromagnetic field strengths generated by ultra-relativistic colliding lead ions. Using 480 μ 1 of lead-lead collision data recorded at a centre-of-mass energy per nucleon pair of 5.02 TeV by the ATLAS detector, here we report evidence for light-by-light scattering. A total of 13 candidate events were observed with an expected background of 2.6 ± 0.7 events. After background subtraction and analysis corrections, the fiducial cross-section of the process Pb + Pb (γγ) → Pb (∗) + Pb (∗) γγ ,for photon transverse energy E T > 3GeV, photon absolute pseudorapidity |η| <2.4, diphoton invariant mass greater than 6GeV, diphoton transverse momentum lower than 2GeV and diphoton acoplanarity below 0.01, is measured to be 70 ± 24 (stat.) ±17 (syst.) nb, which is in agreement with the standard model predictions. en
dc.format.extent 852-858 es
dc.language en es
dc.subject Large Hadron Collider es
dc.subject Heavy-ion collisions es
dc.title Evidence for light-by-light scattering in heavy-ion collisions with the ATLAS detector at the LHC en
dc.type Articulo es
sedici.identifier.other doi:10.1038/nphys4208 es
sedici.identifier.other eid:2-s2.0-85028933316 es
sedici.identifier.issn 1745-2473 es
sedici.creator.person Alconada Verzini, María Josefina es
sedici.creator.person Alonso, Francisco es
sedici.creator.person Arduh, Francisco Anuar es
sedici.creator.person Dova, María Teresa es
sedici.creator.person Hoya, Joaquín es
sedici.creator.person Monticelli, Fernando Gabriel es
sedici.creator.person Wahlberg, Hernán Pablo es
sedici.creator.corporate The ATLAS Collaboration es
sedici.description.note La lista completa de autores que integran el documento puede consultarse en el archivo es
sedici.subject.materias Física es
sedici.description.fulltext true es
mods.originInfo.place Instituto de Física La Plata es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution 4.0 International (CC BY 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by/4.0/
sedici.description.peerReview peer-review es
sedici.relation.journalTitle Nature Physics es
sedici.relation.journalVolumeAndIssue vol. 13, no. 9 es
sedici.rights.sherpa * Color: yellow * Pre-print del autor: si * Post-print del autor: restricted * Versión de editor/PDF:no * Condiciones: >>Research articles only >>On author's personal website, institutional repository and funder designated repository >>Publisher's version/PDF no be used >>Authors retain copyright >>Must link to publisher version >>Published source must be acknowledged and DOI cited >>Post-prints are subject to Springer Nature re-use terms >>Applies to Research articles only * Link a Sherpa: http://sherpa.ac.uk/romeo/issn/1745-2473/es/


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Creative Commons Attribution 4.0 International (CC BY 4.0) Excepto donde se diga explícitamente, este item se publica bajo la siguiente licencia Creative Commons Attribution 4.0 International (CC BY 4.0)