Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/39883
Título: | Measurement of the transverse polarization of Λ and Λ ¯ hyperons produced in proton-proton collisions at s =7TeV using the ATLAS detector |
Autor(es): | Onofre, A. Castro, Nuno Filipe Silva Fernandes ATLAS Collaboration |
Palavras-chave: | QCD particle and resonance production minimum bias experimental results |
Data: | 2015 |
Editora: | American Physical Society |
Revista: | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Citação: | Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., . . . Zwalinski, L. (2015). Measurement of the transverse polarization of Λ and Λ ¯ hyperons produced in proton-proton collisions at s =7TeV using the ATLAS detector. Physical Review D - Particles, Fields, Gravitation and Cosmology, 91(3). doi: 10.1103/PhysRevD.91.032004 |
Resumo(s): | 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 mesurement. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/39883 |
DOI: | 10.1103/PhysRevD.91.032004 |
ISSN: | 1550-7998 |
e-ISSN: | 1550-2368 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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ATLAS-20141205.pdf | 722,11 kB | Adobe PDF | Ver/Abrir |