Measurements of ψ(2S) and X(3872) → J/ψπ+π − production in pp collisions at √s = 8 TeV with the ATLAS detector

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dc.contributor.authorAaboud, M
dc.contributor.authorAad, G
dc.contributor.authorAbbott, B
dc.contributor.authorAbdallah, J
dc.contributor.authorAbdinov, O
dc.contributor.authorAbeloos, B
dc.contributor.authorAben, R
dc.contributor.authorAbouZeid, O S
dc.contributor.authorAbraham, N L
dc.contributor.authorAbramowicz, H
dc.contributor.authorAbreu, H
dc.contributor.authorAbreu, R
dc.contributor.authorAbulaiti, Y
dc.contributor.authorAcharya, B S
dc.contributor.authorAdachi, S
dc.contributor.authorAdamczyk, L
dc.contributor.authorAdams, D L
dc.contributor.authorAdelman, J
dc.contributor.authorAdomeit, S
dc.contributor.authorAdye, T
dc.contributor.authorAffolder, A A
dc.contributor.authorAgatonovic-Jovin, T
dc.contributor.authorAgricola, J
dc.contributor.authorAguilar-Saavedra, J A
dc.contributor.authorAhlen, S P
dc.contributor.authorAhmadov, F
dc.contributor.authorAielli, G
dc.contributor.authorAkerstedt, H
dc.contributor.authorÅkesson, T P A
dc.contributor.authorAkimov, A V
dc.contributor.authorAlberghi, G L
dc.contributor.authorAlbert, J
dc.date.accessioned2021-10-08T07:08:12Z
dc.date.available2021-10-08T07:08:12Z
dc.date.issued2017
dc.description.abstractDifferential cross sections are presented for the prompt and non-prompt production of the hidden-charm states X(3872) and ψ(2S), in the decay mode J/ψπ+π−, measured using 11.4 fb−1 of pp collisions at s√=8 TeV by the ATLAS detector at the LHC. The ratio of cross-sections X(3872)/ψ(2S) is also given, separately for prompt and non-prompt components, as well as the non-prompt fractions of X(3872) and ψ(2S). Assuming independent single effective lifetimes for non-prompt X(3872) and ψ(2S) production gives RB=B(B→X(3872)+any)B(X(3872)→J/ψπ+π−)B(B→ψ(2S)+any)B(ψ(2S)→J/ψπ+π−)=(3.95±0.32(stat)±0.08(sys))×10−2 separating short- and long-lived contributions, assuming that the short-lived component is due to Bc decays, gives RB = (3.57 ± 0.33(stat) ± 0.11(sys)) × 10−2, with the fraction of non-prompt X(3872) produced via Bc decays for pT(X(3872)) > 10 GeV being (25 ± 13(stat) ± 2(sys) ± 5(spin))%. The distributions of the dipion invariant mass in the X(3872) and ψ(2S) decays are also measured and compared to theoretical predictions.
dc.identifier.apacitationAaboud, M., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., ... Albert, J. (2017). Measurements of ψ(2S) and X(3872) → J/ψπ+π − production in pp collisions at √s = 8 TeV with the ATLAS detector. <i>Journal of High Energy Physics</i>, 2017(1), 117 - 177. http://hdl.handle.net/11427/34525en_ZA
dc.identifier.chicagocitationAaboud, M, G Aad, B Abbott, J Abdallah, O Abdinov, B Abeloos, R Aben, et al "Measurements of ψ(2S) and X(3872) → J/ψπ+π − production in pp collisions at √s = 8 TeV with the ATLAS detector." <i>Journal of High Energy Physics</i> 2017, 1. (2017): 117 - 177. http://hdl.handle.net/11427/34525en_ZA
dc.identifier.citationAaboud, M., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., Aben, R. & AbouZeid, O.S. et al. 2017. Measurements of ψ(2S) and X(3872) → J/ψπ+π − production in pp collisions at √s = 8 TeV with the ATLAS detector. <i>Journal of High Energy Physics.</i> 2017(1):117 - 177. http://hdl.handle.net/11427/34525en_ZA
dc.identifier.issn1029-8479
dc.identifier.issn1126-6708
dc.identifier.ris TY - Journal Article AU - Aaboud, M AU - Aad, G AU - Abbott, B AU - Abdallah, J AU - Abdinov, O AU - Abeloos, B AU - Aben, R AU - AbouZeid, O S AU - Abraham, N L AU - Abramowicz, H AU - Abreu, H AU - Abreu, R AU - Abulaiti, Y AU - Acharya, B S AU - Adachi, S AU - Adamczyk, L AU - Adams, D L AU - Adelman, J AU - Adomeit, S AU - Adye, T AU - Affolder, A A AU - Agatonovic-Jovin, T AU - Agricola, J AU - Aguilar-Saavedra, J A AU - Ahlen, S P AU - Ahmadov, F AU - Aielli, G AU - Akerstedt, H AU - Åkesson, T P A AU - Akimov, A V AU - Alberghi, G L AU - Albert, J AB - Differential cross sections are presented for the prompt and non-prompt production of the hidden-charm states X(3872) and ψ(2S), in the decay mode J/ψπ+π−, measured using 11.4 fb−1 of pp collisions at s√=8 TeV by the ATLAS detector at the LHC. The ratio of cross-sections X(3872)/ψ(2S) is also given, separately for prompt and non-prompt components, as well as the non-prompt fractions of X(3872) and ψ(2S). Assuming independent single effective lifetimes for non-prompt X(3872) and ψ(2S) production gives RB=B(B→X(3872)+any)B(X(3872)→J/ψπ+π−)B(B→ψ(2S)+any)B(ψ(2S)→J/ψπ+π−)=(3.95±0.32(stat)±0.08(sys))×10−2 separating short- and long-lived contributions, assuming that the short-lived component is due to Bc decays, gives RB = (3.57 ± 0.33(stat) ± 0.11(sys)) × 10−2, with the fraction of non-prompt X(3872) produced via Bc decays for pT(X(3872)) > 10 GeV being (25 ± 13(stat) ± 2(sys) ± 5(spin))%. The distributions of the dipion invariant mass in the X(3872) and ψ(2S) decays are also measured and compared to theoretical predictions. DA - 2017 DB - OpenUCT DP - University of Cape Town IS - 1 J1 - Journal of High Energy Physics LK - https://open.uct.ac.za PY - 2017 SM - 1029-8479 SM - 1126-6708 T1 - Measurements of ψ(2S) and X(3872) → J/ψπ+π − production in pp collisions at √s = 8 TeV with the ATLAS detector TI - Measurements of ψ(2S) and X(3872) → J/ψπ+π − production in pp collisions at √s = 8 TeV with the ATLAS detector UR - http://hdl.handle.net/11427/34525 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/34525
dc.identifier.vancouvercitationAaboud M, Aad G, Abbott B, Abdallah J, Abdinov O, Abeloos B, et al. Measurements of ψ(2S) and X(3872) → J/ψπ+π − production in pp collisions at √s = 8 TeV with the ATLAS detector. Journal of High Energy Physics. 2017;2017(1):117 - 177. http://hdl.handle.net/11427/34525.en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Physics
dc.publisher.facultyFaculty of Science
dc.sourceJournal of High Energy Physics
dc.source.journalissue1
dc.source.journalvolume2017
dc.source.pagination117 - 177
dc.source.urihttps://dx.doi.org/10.1007/JHEP01(2017)117
dc.subject.otherB physics
dc.subject.otherHadron-Hadron scattering (experiments)
dc.titleMeasurements of ψ(2S) and X(3872) → J/ψπ+π − production in pp collisions at √s = 8 TeV with the ATLAS detector
dc.typeJournal Article
uct.type.publicationResearch
uct.type.resourceJournal Article
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