Measurement of the tt production cross section in the all-jet final state in pp collisions at √s = 7 TeV
Entidad
UAM. Departamento de Física TeóricaEditor
SISSA 2013; Springer VerlagFecha de edición
2013-05-14Cita
10.1007/JHEP05(2013)065
Journal of High Energy Physics 2013.5 (2013): 065
ISSN
1029-8479 (online); 1126-6708 (print)DOI
10.1007/JHEP05(2013)065Versión del editor
http://dx.doi.org/10.1007/JHEP05(2013)065Materias
Hadron-hadron scattering; FísicaNota
Journal of High Energy Physics 2013.5 (2013): 065 reproduced by permission of Scuola Internazionale Superiore di Studi Avanzati (SISSA)Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAM
Derechos
© 2013 CERN for the benefit of the CMS collaboration; © SISSA 2013Resumen
A measurement is presented of the tt production cross section (σtt) in protonproton
collisions at a centre-of-mass energy of 7TeV, in the all-jet final state that contains
at least six jets, two of which are tagged as originating from b quarks. The data correspond to an integrated luminosity of 3.54 fb-1, collected with the CMS detector at the LHC. The cross section is determined through an unbinned maximum likelihood fit of background and tt signal to the reconstructed mass spectrum of tt candidates in the data, in which events are subjected to a kinematic fit assuming a tt → W+bW-b → 6 jets hypothesis. The measurement yields σtt = 139±10 (stat.)±26 (syst.)±3 (lum.) pb, a result consistent with those obtained in other tt decay channels, as well as with predictions of the standard model
Lista de ficheros
Google Scholar:The CMS collaboration
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Chatrchyan, S.
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Albajar Molera, Carmen
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Codispoti, G.
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Fernández Trocóniz Acha, Jorge
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