Measurement of the Λ b 0 → J/ψ Λ angular distribution and the Λ b 0 polarisation in pp collisions
This paper presents an analysis of the Λb0→ J/ψΛ angular distribution and the transverse production polarisation of Λb0 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,...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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Springer
2020
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| _version_ | 1824459266219573248 |
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| author | Aaij, R Abellán Beteta, C Ackernley, T Adeva, B Adinolfi, M Afsharnia, H Aidala, CA Aiola, S Ajaltouni, Z Akar, S Albrecht, J Alessio, F Alexander, M Alfonso Albero, A Alkhazov, G Alvarez Cartelle, P Alves, AA Amato, S Amhis, Y An, L Anderlini, L Andreassi, G Andreianov, A Andreotti, M Bjørn, M Fischer, KM Gruberg Cazon, BR Hadavizadeh, T Hancock, TH Harnew, N Hill, D John, M Jurik, N Li, L Malde, S Murphy, CH Pili, M Pullen, H Renaudin, V Rollings, A Scantlebury Smead, LG Wilkinson, G |
| author_facet | Aaij, R Abellán Beteta, C Ackernley, T Adeva, B Adinolfi, M Afsharnia, H Aidala, CA Aiola, S Ajaltouni, Z Akar, S Albrecht, J Alessio, F Alexander, M Alfonso Albero, A Alkhazov, G Alvarez Cartelle, P Alves, AA Amato, S Amhis, Y An, L Anderlini, L Andreassi, G Andreianov, A Andreotti, M Bjørn, M Fischer, KM Gruberg Cazon, BR Hadavizadeh, T Hancock, TH Harnew, N Hill, D John, M Jurik, N Li, L Malde, S Murphy, CH Pili, M Pullen, H Renaudin, V Rollings, A Scantlebury Smead, LG Wilkinson, G |
| author_sort | Aaij, R |
| collection | OXFORD |
| description | This paper presents an analysis of the Λb0→ J/ψΛ angular distribution and the transverse production polarisation of Λb0 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 Λb0 transverse momentum and pseudorapidity of 1 < pT< 20 GeV/c and 2 < η < 5, respectively. The data are consistent with Λb0 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. |
| first_indexed | 2025-02-19T04:39:03Z |
| format | Journal article |
| id | oxford-uuid:1cf6544e-80e8-44b4-baeb-06b2067ca7cd |
| institution | University of Oxford |
| language | English |
| last_indexed | 2025-02-19T04:39:03Z |
| publishDate | 2020 |
| publisher | Springer |
| record_format | dspace |
| spelling | oxford-uuid:1cf6544e-80e8-44b4-baeb-06b2067ca7cd2025-02-13T20:12:45ZMeasurement of the Λ b 0 → J/ψ Λ angular distribution and the Λ b 0 polarisation in pp collisionsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:1cf6544e-80e8-44b4-baeb-06b2067ca7cdEnglishJisc Publications RouterSpringer2020Aaij, RAbellán Beteta, CAckernley, TAdeva, BAdinolfi, MAfsharnia, HAidala, CAAiola, SAjaltouni, ZAkar, SAlbrecht, JAlessio, FAlexander, MAlfonso Albero, AAlkhazov, GAlvarez Cartelle, PAlves, AAAmato, SAmhis, YAn, LAnderlini, LAndreassi, GAndreianov, AAndreotti, MBjørn, MFischer, KMGruberg Cazon, BRHadavizadeh, THancock, THHarnew, NHill, DJohn, MJurik, NLi, LMalde, SMurphy, CHPili, MPullen, HRenaudin, VRollings, AScantlebury Smead, LGWilkinson, GThis paper presents an analysis of the Λb0→ J/ψΛ angular distribution and the transverse production polarisation of Λb0 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 Λb0 transverse momentum and pseudorapidity of 1 < pT< 20 GeV/c and 2 < η < 5, respectively. The data are consistent with Λb0 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. |
| spellingShingle | Aaij, R Abellán Beteta, C Ackernley, T Adeva, B Adinolfi, M Afsharnia, H Aidala, CA Aiola, S Ajaltouni, Z Akar, S Albrecht, J Alessio, F Alexander, M Alfonso Albero, A Alkhazov, G Alvarez Cartelle, P Alves, AA Amato, S Amhis, Y An, L Anderlini, L Andreassi, G Andreianov, A Andreotti, M Bjørn, M Fischer, KM Gruberg Cazon, BR Hadavizadeh, T Hancock, TH Harnew, N Hill, D John, M Jurik, N Li, L Malde, S Murphy, CH Pili, M Pullen, H Renaudin, V Rollings, A Scantlebury Smead, LG Wilkinson, G Measurement of the Λ b 0 → J/ψ Λ angular distribution and the Λ b 0 polarisation in pp collisions |
| title | Measurement of the Λ b 0 → J/ψ Λ angular distribution and the Λ b 0 polarisation in pp collisions |
| title_full | Measurement of the Λ b 0 → J/ψ Λ angular distribution and the Λ b 0 polarisation in pp collisions |
| title_fullStr | Measurement of the Λ b 0 → J/ψ Λ angular distribution and the Λ b 0 polarisation in pp collisions |
| title_full_unstemmed | Measurement of the Λ b 0 → J/ψ Λ angular distribution and the Λ b 0 polarisation in pp collisions |
| title_short | Measurement of the Λ b 0 → J/ψ Λ angular distribution and the Λ b 0 polarisation in pp collisions |
| title_sort | measurement of the λ b 0 j ψ λ angular distribution and the λ b 0 polarisation in pp collisions |
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