Search for magnetic monopoles in √s = 7 TeV pp collisions with the ATLAS detector

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–1of 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 produc...

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Detalles Bibliográficos
Autores principales: Alonso, Francisco, Anduaga, Xabier Sebastián, Dova, María Teresa, Monticelli, Fernando Gabriel, Tripiana, Martín Fernando, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2012
Materias:
Ciencias Exactas
Física
Monopolo magnético
Partículas Elementales
Large Hadron Collider
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83644
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83644
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
Monopolo magnético
Partículas Elementales
Large Hadron Collider
spellingShingle Ciencias Exactas
Física
Monopolo magnético
Partículas Elementales
Large Hadron Collider
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín Fernando
The ATLAS Collaboration
Search for magnetic monopoles in √s = 7 TeV pp collisions with the ATLAS detector
topic_facet Ciencias Exactas
Física
Monopolo magnético
Partículas Elementales
Large Hadron Collider
description 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–1of 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<sup>kin</sup>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.
format Articulo
Articulo
author Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín Fernando
The ATLAS Collaboration
author_facet Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín Fernando
The ATLAS Collaboration
author_sort Alonso, Francisco
title Search for magnetic monopoles in √s = 7 TeV pp collisions with the ATLAS detector
title_short Search for magnetic monopoles in √s = 7 TeV pp collisions with the ATLAS detector
title_full Search for magnetic monopoles in √s = 7 TeV pp collisions with the ATLAS detector
title_fullStr Search for magnetic monopoles in √s = 7 TeV pp collisions with the ATLAS detector
title_full_unstemmed Search for magnetic monopoles in √s = 7 TeV pp collisions with the ATLAS detector
title_sort search for magnetic monopoles in √s = 7 tev pp collisions with the atlas detector
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/83644
work_keys_str_mv AT alonsofrancisco searchformagneticmonopolesins7tevppcollisionswiththeatlasdetector
AT anduagaxabiersebastian searchformagneticmonopolesins7tevppcollisionswiththeatlasdetector
AT dovamariateresa searchformagneticmonopolesins7tevppcollisionswiththeatlasdetector
AT monticellifernandogabriel searchformagneticmonopolesins7tevppcollisionswiththeatlasdetector
AT tripianamartinfernando searchformagneticmonopolesins7tevppcollisionswiththeatlasdetector
AT theatlascollaboration searchformagneticmonopolesins7tevppcollisionswiththeatlasdetector
bdutipo_str Repositorios
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