Measurement of the Λ0b→ J/ψΛ angular distribution and the Λ0b polarisation in pp collisions; Journal of High Energy Physics; Vol. 2020, iss. 6
| Parent link: | Journal of High Energy Physics Vol. 2020, iss. 6.— 2020.— [110, 29 p.] |
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| Corporate Authors: | , |
| Outros Autores: | , , , , , , |
| Resumo: | Title screen This paper presents an analysis of the Λ0b→ J/ψΛ angular distribution and the transverse production polarisation of Λ0bΛb0 baryons in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. The measurements are performed using data corresponding to an integrated luminosity of 4.9 fb−1, collected with the LHCb experiment. The polarisation is determined in a fiducial region of Λ0bΛb0 transverse momentum and pseudorapidity of 1 < pT < 20 GeV/c and 2 < η < 5, respectively. The data are consistent with Λ0bΛb0 baryons being produced unpolarised in this region. The parity-violating asymmetry parameter of the Λ → pπ− decay is also determined from the data and its value is found to be consistent with a recent measurement by the BES III collaboration. |
| Idioma: | inglês |
| Publicado em: |
2020
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| Assuntos: | |
| Acesso em linha: | https://doi.org/10.1007/JHEP06(2020)110 |
| Formato: | xMaterials Recurso Electrónico Capítulo de Livro |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664636 |
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| 200 | 1 | |a Measurement of the Λ0b→ J/ψΛ angular distribution and the Λ0b polarisation in pp collisions |f R. Aaij, C. A. Beteta, T. Ackernley [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 63 tit.] | ||
| 330 | |a This paper presents an analysis of the Λ0b→ J/ψΛ angular distribution and the transverse production polarisation of Λ0bΛb0 baryons in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. The measurements are performed using data corresponding to an integrated luminosity of 4.9 fb−1, collected with the LHCb experiment. The polarisation is determined in a fiducial region of Λ0bΛb0 transverse momentum and pseudorapidity of 1 < pT < 20 GeV/c and 2 < η < 5, respectively. The data are consistent with Λ0bΛb0 baryons being produced unpolarised in this region. The parity-violating asymmetry parameter of the Λ → pπ− decay is also determined from the data and its value is found to be consistent with a recent measurement by the BES III collaboration. | ||
| 461 | |t Journal of High Energy Physics | ||
| 463 | |t Vol. 2020, iss. 6 |v [110, 29 p.] |d 2020 | ||
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| 701 | 1 | |a Ackernley |b T. | |
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