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Measurement of the polarizations of prompt and non-prompt J/Ψ and Ψ(2S) mesons produced in pp collisions at √s = 13TeV

Publication ,  Journal Article
Hayrapetyan, A; Tumasyan, A; Adam, W; Andrejkovic, JW; Bergauer, T; Chatterjee, S; Damanakis, K; Dragicevic, M; Hussain, PS; Jeitler, M; Li, A ...
Published in: Physics Letters Section B Nuclear Elementary Particle and High Energy Physics
November 1, 2024
Published version (DOI)

The polarizations of prompt and non-prompt [Formula presented] and ψ(2S) mesons are measured in proton-proton collisions at s=13 TeV, using data samples collected by the CMS experiment in 2017 and 2018, corresponding to a total integrated luminosity of 103.3fb−1. Based on the analysis of the dimuon decay angular distributions in the helicity frame, the polar anisotropy, λϑ, is measured as a function of the transverse momentum, pT, of the charmonium states, in the 25–120 and 20–100 GeV ranges for the [Formula presented] and ψ(2S), respectively. The non-prompt polarizations agree with predictions based on the hypothesis that, for pT≳25GeV, the non-prompt [Formula presented] and ψ(2S) are predominantly produced in two-body B meson decays. The prompt results clearly exclude strong transverse polarizations, even for pT exceeding 30 times the [Formula presented] mass, where λϑ tends to an asymptotic value around 0.3. Taken together with previous measurements, by CMS and LHCb at s=7 TeV, the prompt polarizations show a significant variation with pT, at low pT.

Duke Scholars

Seog Oh
Author Seog Oh Physics

Published In

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

DOI

10.1016/j.physletb.2024.139044

ISSN

0370-2693

Publication Date

November 1, 2024

Volume

858

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
 

Citation

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Hayrapetyan, A., Tumasyan, A., Adam, W., Andrejkovic, J. W., Bergauer, T., Chatterjee, S., … Brandao Malbouisson, H. (2024). Measurement of the polarizations of prompt and non-prompt J/Ψ and Ψ(2S) mesons produced in pp collisions at √s = 13TeV. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, 858. https://doi.org/10.1016/j.physletb.2024.139044
Hayrapetyan, A., A. Tumasyan, W. Adam, J. W. Andrejkovic, T. Bergauer, S. Chatterjee, K. Damanakis, et al. “Measurement of the polarizations of prompt and non-prompt J/Ψ and Ψ(2S) mesons produced in pp collisions at √s = 13TeV.” Physics Letters Section B Nuclear Elementary Particle and High Energy Physics 858 (November 1, 2024). https://doi.org/10.1016/j.physletb.2024.139044.
Hayrapetyan A, Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Chatterjee S, et al. Measurement of the polarizations of prompt and non-prompt J/Ψ and Ψ(2S) mesons produced in pp collisions at √s = 13TeV. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics. 2024 Nov 1;858.
Hayrapetyan, A., et al. “Measurement of the polarizations of prompt and non-prompt J/Ψ and Ψ(2S) mesons produced in pp collisions at √s = 13TeV.” Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, vol. 858, Nov. 2024. Scopus, doi:10.1016/j.physletb.2024.139044.
Hayrapetyan A, Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Chatterjee S, Damanakis K, Dragicevic M, Hussain PS, Jeitler M, Krammer N, Li A, Liko D, Mikulec I, Schieck J, Schöfbeck R, Schwarz D, Sonawane M, Templ S, Waltenberger W, Wulz CE, Darwish MR, Janssen T, Van Laer T, Van Mechelen P, Breugelmans N, D’Hondt J, Dansana S, De Moor A, Delcourt M, Heyen F, Lowette S, Makarenko I, Müller D, Tavernier S, Tytgat M, Van Onsem GP, Van Putte S, Vannerom D, Bilin B, Clerbaux B, Das AK, De Lentdecker G, Evard H, Favart L, Gianneios P, Jaramillo J, Khalilzadeh A, Khan FA, Lee K, Mahdavikhorrami M, Malara A, Paredes S, Shahzad MA, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, De Coen M, Dobur D, Gokbulut G, Hong Y, Knolle J, Lambrecht L, Marckx D, Mota Amarilo K, Samalan A, Skovpen K, Van Den Bossche N, van der Linden J, Wezenbeek L, Benecke A, Bethani A, Bruno G, Caputo C, De Favereau De Jeneret J, Delaere C, Donertas IS, Giammanco A, Guzel AO, Jain S, Lemaitre V, Lidrych J, Mastrapasqua P, Tran TT, Wertz S, Alves GA, Alves Gallo Pereira M, Coelho E, Correia Silva G, Hensel C, Menezes De Oliveira T, Mora Herrera C, Moraes A, Rebello Teles P, Soeiro M, Vilela Pereira A, Aldá WL, Barroso Ferreira Filho M, Brandao Malbouisson H. Measurement of the polarizations of prompt and non-prompt J/Ψ and Ψ(2S) mesons produced in pp collisions at √s = 13TeV. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics. 2024 Nov 1;858.
Journal cover image

Published In

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

DOI

10.1016/j.physletb.2024.139044

ISSN

0370-2693

Publication Date

November 1, 2024

Volume

858

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 49 Mathematical sciences