Multiplicity dependence of σ ψ (2 S ) /σ J/ψ in pp collisions at s = 13 TeV
The ratio of production cross-sections of ψ(2S) over J/ψ mesons as a function of charged-particle multiplicity in proton-proton collisions at a centre-of-mass energy s = 13 TeV is measured with a data sample collected by the LHCb detector, corresponding to an integrated luminosity of 658 pb−1. The r...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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Springer
2024
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| _version_ | 1826313575899070464 |
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| author | Aaij, R Abdelmotteleb, ASW Abellan Beteta, C Abudinén, F Ackernley, T Adeva, B Adinolfi, M Adlarson, P Agapopoulou, C Aidala, CA Ajaltouni, Z Akar, S Akiba, K Albicocco, P Albrecht, J Alessio, F Alexander, M Alfonso Albero, A Aliouche, Z Alvarez Cartelle, P Amalric, R Amato, S Amey, JL Amhis, Y Bacher, D Cervenkov, D Fischer, KM Gao, R Gilman, AL Goncalves Abrantes, F Harnew, N John, M Mackay, I Malde, S Mohammed, RA Pajero, T Patoc, J Resmi, PK Rollings, A Scantlebury Smead, LG Smallwood, JC Stanislaus, S Suljik, F Tat, MD Wilkinson, G |
| author_facet | Aaij, R Abdelmotteleb, ASW Abellan Beteta, C Abudinén, F Ackernley, T Adeva, B Adinolfi, M Adlarson, P Agapopoulou, C Aidala, CA Ajaltouni, Z Akar, S Akiba, K Albicocco, P Albrecht, J Alessio, F Alexander, M Alfonso Albero, A Aliouche, Z Alvarez Cartelle, P Amalric, R Amato, S Amey, JL Amhis, Y Bacher, D Cervenkov, D Fischer, KM Gao, R Gilman, AL Goncalves Abrantes, F Harnew, N John, M Mackay, I Malde, S Mohammed, RA Pajero, T Patoc, J Resmi, PK Rollings, A Scantlebury Smead, LG Smallwood, JC Stanislaus, S Suljik, F Tat, MD Wilkinson, G |
| author_sort | Aaij, R |
| collection | OXFORD |
| description | The ratio of production cross-sections of ψ(2S) over J/ψ mesons as a function of charged-particle multiplicity in proton-proton collisions at a centre-of-mass energy s = 13 TeV is measured with a data sample collected by the LHCb detector, corresponding to an integrated luminosity of 658 pb−1. The ratio is measured for both prompt and non-prompt ψ(2S) and J/ψ mesons. When there is an overlap between the rapidity ranges over which multiplicity and charmonia production are measured, a multiplicity-dependent modification of the ratio is observed for prompt mesons. No significant multiplicity dependence is found when the ranges do not overlap. For non-prompt production, the ψ(2S)-to-J/ψ production ratio is roughly independent of multiplicity, irrespective of the rapidity range over which the multiplicity is measured. The results are compared to predictions of the co-mover model and agree well except in the low multiplicity region. The ratio of production cross-sections of ψ(2S) over J/ψ mesons are cross-checked with other measurements in di-lepton channels and found to be compatible. |
| first_indexed | 2024-09-25T04:17:10Z |
| format | Journal article |
| id | oxford-uuid:6e33e117-7298-40f6-93aa-11506e2cce52 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-09-25T04:17:10Z |
| publishDate | 2024 |
| publisher | Springer |
| record_format | dspace |
| spelling | oxford-uuid:6e33e117-7298-40f6-93aa-11506e2cce522024-07-20T16:22:22ZMultiplicity dependence of σ ψ (2 S ) /σ J/ψ in pp collisions at s = 13 TeVJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:6e33e117-7298-40f6-93aa-11506e2cce52EnglishJisc Publications RouterSpringer2024Aaij, RAbdelmotteleb, ASWAbellan Beteta, CAbudinén, FAckernley, TAdeva, BAdinolfi, MAdlarson, PAgapopoulou, CAidala, CAAjaltouni, ZAkar, SAkiba, KAlbicocco, PAlbrecht, JAlessio, FAlexander, MAlfonso Albero, AAliouche, ZAlvarez Cartelle, PAmalric, RAmato, SAmey, JLAmhis, YBacher, DCervenkov, DFischer, KMGao, RGilman, ALGoncalves Abrantes, FHarnew, NJohn, MMackay, IMalde, SMohammed, RAPajero, TPatoc, JResmi, PKRollings, AScantlebury Smead, LGSmallwood, JCStanislaus, SSuljik, FTat, MDWilkinson, GThe ratio of production cross-sections of ψ(2S) over J/ψ mesons as a function of charged-particle multiplicity in proton-proton collisions at a centre-of-mass energy s = 13 TeV is measured with a data sample collected by the LHCb detector, corresponding to an integrated luminosity of 658 pb−1. The ratio is measured for both prompt and non-prompt ψ(2S) and J/ψ mesons. When there is an overlap between the rapidity ranges over which multiplicity and charmonia production are measured, a multiplicity-dependent modification of the ratio is observed for prompt mesons. No significant multiplicity dependence is found when the ranges do not overlap. For non-prompt production, the ψ(2S)-to-J/ψ production ratio is roughly independent of multiplicity, irrespective of the rapidity range over which the multiplicity is measured. The results are compared to predictions of the co-mover model and agree well except in the low multiplicity region. The ratio of production cross-sections of ψ(2S) over J/ψ mesons are cross-checked with other measurements in di-lepton channels and found to be compatible. |
| spellingShingle | Aaij, R Abdelmotteleb, ASW Abellan Beteta, C Abudinén, F Ackernley, T Adeva, B Adinolfi, M Adlarson, P Agapopoulou, C Aidala, CA Ajaltouni, Z Akar, S Akiba, K Albicocco, P Albrecht, J Alessio, F Alexander, M Alfonso Albero, A Aliouche, Z Alvarez Cartelle, P Amalric, R Amato, S Amey, JL Amhis, Y Bacher, D Cervenkov, D Fischer, KM Gao, R Gilman, AL Goncalves Abrantes, F Harnew, N John, M Mackay, I Malde, S Mohammed, RA Pajero, T Patoc, J Resmi, PK Rollings, A Scantlebury Smead, LG Smallwood, JC Stanislaus, S Suljik, F Tat, MD Wilkinson, G Multiplicity dependence of σ ψ (2 S ) /σ J/ψ in pp collisions at s = 13 TeV |
| title | Multiplicity dependence of σ ψ (2 S ) /σ J/ψ in pp collisions at s = 13 TeV |
| title_full | Multiplicity dependence of σ ψ (2 S ) /σ J/ψ in pp collisions at s = 13 TeV |
| title_fullStr | Multiplicity dependence of σ ψ (2 S ) /σ J/ψ in pp collisions at s = 13 TeV |
| title_full_unstemmed | Multiplicity dependence of σ ψ (2 S ) /σ J/ψ in pp collisions at s = 13 TeV |
| title_short | Multiplicity dependence of σ ψ (2 S ) /σ J/ψ in pp collisions at s = 13 TeV |
| title_sort | multiplicity dependence of σ ψ 2 s σ j ψ in pp collisions at s 13 tev |
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