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dc.contributor.author
Aad, G.  
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Abbott, B.  
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Abdallah, J.  
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Abdel Khalek, S.  
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Abdinov, O.  
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Otero y Garzon, Gustavo Javier  
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Piegaia, Ricardo Nestor  
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Sacerdoti, Sabrina  
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Reisin, Hernan Diego  
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Alconada Verzini, María Josefina  
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Alonso, Franciasco  
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Anduaga, Xabier Sebastian  
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Arduh, Francisco Anuar  
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Dova, Maria Teresa  
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Monticelli, Fernando Gabriel  
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Wahlberg, Hernan Pablo  
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Zhukov, K.  
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Zibell, A.  
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Zieminska, D.  
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Zimine, N. I.  
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Zimmermann, C.  
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Zimmermann, R.  
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Zimmermann, S.  
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Zimmermann, S.  
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Ziolkowski, M.  
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Zobernig, G.  
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Zoccoli, A.  
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Nedden, M. zur  
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Zurzolo, G.  
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Zutshi, V.  
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Zwalinski, L.  
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The ATLAS Collaboration  
dc.date.available
2020-05-19T15:31:29Z  
dc.date.issued
2014-04  
dc.identifier.citation
Aad, G.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdinov, O.; et al.; Measurement of the parity-violating asymmetry parameter αb and the helicity amplitudes for the decay Λ0b→J/ψ+Λ0 with the ATLAS detector; American Physical Society; Physical Review D: Particles, Fields, Gravitation and Cosmology; D89; 4-2014; 092009-34  
dc.identifier.issn
1550-7998  
dc.identifier.uri
http://hdl.handle.net/11336/105467  
dc.description.abstract
A measurement of the parity-violating decay asymmetry parameter, αb, and the helicity amplitudes for the decay Λb0→J/ψ(μ+μ-)Λ0(pπ-) is reported. The analysis is based on 1400 Λb0 and Λ¯b0 baryons selected in 4.6  fb-1 of proton-proton collision data with a center-of-mass energy of 7 TeV recorded by the ATLAS experiment at the LHC. By combining the Λb0 and Λ¯b0 samples under the assumption of CP conservation, the value of αb is measured to be 0.30±0.16(stat)±0.06(syst). This measurement provides a test of theoretical models based on perturbative QCD or heavy-quark effective theory.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
American Physical Society  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
ATLAS  
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LHC  
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Hep  
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Astronomía  
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Ciencias Físicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Measurement of the parity-violating asymmetry parameter αb and the helicity amplitudes for the decay Λ0b→J/ψ+Λ0 with the ATLAS detector  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2017-09-06T19:31:51Z  
dc.journal.volume
D89  
dc.journal.pagination
092009-34  
dc.journal.pais
Estados Unidos  
dc.journal.ciudad
New York  
dc.description.fil
Fil: F. Monticelli.  
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Fil: Atlas Collaboration.  
dc.journal.title
Physical Review D: Particles, Fields, Gravitation and Cosmology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prd/abstract/10.1103/PhysRevD.89.092009  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevD.89.092009  

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