Measurement of the transverse polarization of Λ and Λ ¯ hyperons produced in proton-proton collisions at √s = 7 TeV using the ATLAS detector

The transverse polarization of Λ and Λ¯ hyperons produced in proton-proton collisions at a center-of-mass energy of 7 TeV is measured. The analysis uses 760 μb-1 of minimum bias data collected by the ATLAS detector at the LHC in the year 2010. The measured transverse polarization averaged over Feynm...

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Publicado: 2015
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v91_n3_p_Aad
http://hdl.handle.net/20.500.12110/paper_15507998_v91_n3_p_Aad
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_15507998_v91_n3_p_Aad2023-06-08T16:22:52Z Measurement of the transverse polarization of Λ and Λ ¯ hyperons produced in proton-proton collisions at √s = 7 TeV using the ATLAS detector The transverse polarization of Λ and Λ¯ hyperons produced in proton-proton collisions at a center-of-mass energy of 7 TeV is measured. The analysis uses 760 μb-1 of minimum bias data collected by the ATLAS detector at the LHC in the year 2010. The measured transverse polarization averaged over Feynman xF from 5×10-5 to 0.01 and transverse momentum pT from 0.8 to 15 GeV is -0.010±0.005(stat)±0.004(syst) for Λ and 0.002±0.006(stat)±0.004(syst) for Λ¯. It is also measured as a function of xF and pT, but no significant dependence on these variables is observed. Prior to this measurement, the polarization was measured at fixed-target experiments with center-of-mass energies up to about 40 GeV. The ATLAS results are compatible with the extrapolation of a fit from previous measurements to the xF range covered by this measurement. © 2015 CERN, for the ATLAS Collaboration. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v91_n3_p_Aad http://hdl.handle.net/20.500.12110/paper_15507998_v91_n3_p_Aad
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description The transverse polarization of Λ and Λ¯ hyperons produced in proton-proton collisions at a center-of-mass energy of 7 TeV is measured. The analysis uses 760 μb-1 of minimum bias data collected by the ATLAS detector at the LHC in the year 2010. The measured transverse polarization averaged over Feynman xF from 5×10-5 to 0.01 and transverse momentum pT from 0.8 to 15 GeV is -0.010±0.005(stat)±0.004(syst) for Λ and 0.002±0.006(stat)±0.004(syst) for Λ¯. It is also measured as a function of xF and pT, but no significant dependence on these variables is observed. Prior to this measurement, the polarization was measured at fixed-target experiments with center-of-mass energies up to about 40 GeV. The ATLAS results are compatible with the extrapolation of a fit from previous measurements to the xF range covered by this measurement. © 2015 CERN, for the ATLAS Collaboration.
title Measurement of the transverse polarization of Λ and Λ ¯ hyperons produced in proton-proton collisions at √s = 7 TeV using the ATLAS detector
spellingShingle Measurement of the transverse polarization of Λ and Λ ¯ hyperons produced in proton-proton collisions at √s = 7 TeV using the ATLAS detector
title_short Measurement of the transverse polarization of Λ and Λ ¯ hyperons produced in proton-proton collisions at √s = 7 TeV using the ATLAS detector
title_full Measurement of the transverse polarization of Λ and Λ ¯ hyperons produced in proton-proton collisions at √s = 7 TeV using the ATLAS detector
title_fullStr Measurement of the transverse polarization of Λ and Λ ¯ hyperons produced in proton-proton collisions at √s = 7 TeV using the ATLAS detector
title_full_unstemmed Measurement of the transverse polarization of Λ and Λ ¯ hyperons produced in proton-proton collisions at √s = 7 TeV using the ATLAS detector
title_sort measurement of the transverse polarization of λ and λ ¯ hyperons produced in proton-proton collisions at √s = 7 tev using the atlas detector
publishDate 2015
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v91_n3_p_Aad
http://hdl.handle.net/20.500.12110/paper_15507998_v91_n3_p_Aad
_version_ 1768543342755315712

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