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Abstract:

This Letter presents a search for magnetic monopoles with the ATLAS detector at the CERN Large Hadron Collider using an integrated luminosity of 2.0 fb –1 of pp collisions recorded at a center-of-mass energy of √s = 7 TeV. No event is found in the signal region, leading to an upper limit on the production cross section at 95% confidence level of 1.6/ϵ fb for Dirac magnetic monopoles with the minimum unit magnetic charge and with mass between 200 GeVand 1500 GeV, where ϵ is the monopole reconstruction efficiency. The efficiency ϵ is high and uniform in the fiducial region given by pseudorapidity ∣η∣ < 1.37 and transverse kinetic energy 600–700 < E kin sinθ < 1400 GeV. The minimum value of 700 GeV is for monopoles of mass 200 GeV, whereas the minimum value of 600 GeV is applicable for higher mass monopoles. Therefore, the upper limit on the production cross section at 95% confidence level is 2 fb in this fiducial region. Assuming the kinematic distributions from Drell-Yan pair production of spin-1/2 Dirac magnetic monopoles, the efficiency is in the range 1%–10%, leading to an upper limit on the cross section at 95% confidence level that varies from 145 fb to 16 fb for monopoles with mass between 200 GeV and 1200 GeV. This limit is weaker than the fiducial limit because most of these monopoles lie outside the fiducial region. © 2012 CERN. Published by the American Physical Society.

Registro:

Documento: Artículo
Título:Search for magnetic monopoles in √s = 7 TeV pp collisions with the ATLAS detector
Autor:ATLAS Collaboration et al.
Este artículo contiene 2877 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2877 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:Kinetic energy; Kinetics; Tellurium compounds; Confidence levels; Integrated luminosity; Large Hadron Collider; Magnetic charges; Magnetic monopoles; Production cross section; Pseudorapidities; Reconstruction efficiency; Magnetism
Año:2012
Volumen:109
Número:26
DOI: http://dx.doi.org/10.1103/PhysRevLett.109.261803
Título revista:Physical Review Letters
Título revista abreviado:Phys Rev Lett
ISSN:00319007
CODEN:PRLTA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v109_n26_p_ATLASCollaboration

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Citas:

---------- APA ----------
(2012) . Search for magnetic monopoles in √s = 7 TeV pp collisions with the ATLAS detector. Physical Review Letters, 109(26).
http://dx.doi.org/10.1103/PhysRevLett.109.261803
---------- CHICAGO ----------
ATLAS Collaboration. "Search for magnetic monopoles in √s = 7 TeV pp collisions with the ATLAS detector" . Physical Review Letters 109, no. 26 (2012).
http://dx.doi.org/10.1103/PhysRevLett.109.261803
---------- MLA ----------
ATLAS Collaboration. "Search for magnetic monopoles in √s = 7 TeV pp collisions with the ATLAS detector" . Physical Review Letters, vol. 109, no. 26, 2012.
http://dx.doi.org/10.1103/PhysRevLett.109.261803
---------- VANCOUVER ----------
ATLAS Collaboration. Search for magnetic monopoles in √s = 7 TeV pp collisions with the ATLAS detector. Phys Rev Lett. 2012;109(26).
http://dx.doi.org/10.1103/PhysRevLett.109.261803