Measurement of \(\psi {(2S)} \) polarisation in
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A. Zvyagin (38) - 刊名：The European Physical Journal C - Particles and Fields
- 出版年：2014
- 出版时间：May 2014
- 年：2014
- 卷：74
- 期：5
- 全文大小：
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M. Zavertyaev (10)
F. Zhang (3)
L. Zhang (59)
W. C. Zhang (12)
Y. Zhang (3)
A. Zhelezov (11)
A. Zhokhov (31)
L. Zhong (3)
A. Zvyagin (38)
41. Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
37. Universidad de Santiago de Compostela, Santiago de Compostela, Spain
46. H.H. Wills Physics Laboratory, University of Bristol, Bristol, UK
52. Oliver Lodge Laboratory, University of Liverpool, Liverpool, UK
5. Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
9. Fakult?t Physik, Technische Universit?t Dortmund, Dortmund, Germany
38. European Organization for Nuclear Research (CERN), Geneva, Switzerland
51. School of Physics and Astronomy, University of Glasgow, Glasgow, UK
30. Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia
25. Sezione INFN di Roma La Sapienza, Rome, Italy
2. Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
22. Sezione INFN di Padova, Padua, Italy
7. LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
3. Center for High Energy Physics, Tsinghua University, Beijing, China
17. Sezione INFN di Firenze, Florence, Italy
40. Physik-Institut, Universit?t Zürich, Zurich, Switzerland
57. University of Cincinnati, Cincinnati, OH, USA
16. Sezione INFN di Ferrara, Ferrara, Italy
58. University of Maryland, College Park, MD, USA
54. School of Physics and Astronomy, University of Manchester, Manchester, UK
10. Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
35. Institute for High Energy Physics (IHEP), Protvino, Russia
59. Syracuse University, Syracuse, NY, USA
6. CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
11. Physikalisches Institut, Ruprecht-Karls-Universit?t Heidelberg, Heidelberg, Germany
48. Department of Physics, University of Warwick, Coventry, UK
36. Universitat de Barcelona, Barcelona, Spain
31. Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
39. Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
47. Cavendish Laboratory, University of Cambridge, Cambridge, UK
28. National Center for Nuclear Research (NCBJ), Warsaw, Poland
23. Sezione INFN di Pisa, Pisa, Italy
1. Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil
8. LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France
18. Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy
50. School of Physics and Astronomy, University of Edinburgh, Edinburgh, UK
32. Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia
45. University of Birmingham, Birmingham, UK
34. Budker Institute of Nuclear Physics (SB RAS), Novosibirsk State University, Novosibirsk, Russia
15. Sezione INFN di Cagliari, Cagliari, Italy
42. Nikhef National Institute for Subatomic Physics, VU University Amsterdam, Amsterdam, The Netherlands
20. Sezione INFN di Milano Bicocca, Milan, Italy
14. Sezione INFN di Bologna, Bologna, Italy
24. Sezione INFN di Roma Tor Vergata, Rome, Italy
19. Sezione INFN di Genova, Genova, Italy
55. Department of Physics, University of Oxford, Oxford, UK
26. Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland
53. Imperial College London, London, UK
29. Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
56. Massachusetts Institute of Technology, Cambridge, MA, USA
60. Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil
4. LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
43. NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine
49. STFC Rutherford Appleton Laboratory, Didcot, UK
33. Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia
27. Faculty of Physics and Applied Computer Science, AGH-University of Science and Technology, Kraków, Poland
21. Sezione INFN di Milano, Milan, Italy
62. Institut für Physik, Universit?t Rostock, Rostock, Germany
44. Institute for Nuclear Research of the National Academy of Sciences (KINR), Kiev, Ukraine
64. Instituto de Fisica Corpuscular (IFIC), Universitat de Valencia-CSIC, Valencia, Spain
12. School of Physics, University College Dublin, Dublin, Ireland
65. KVI, University of Groningen, Groningen, The Netherlands
13. Sezione INFN di Bari, Bari, Italy
66. Celal Bayar University, Manisa, Turkey
63. National Research Centre Kurchatov Institute, Moscow, Russia
61. Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China - ISSN：1434-6052
文摘
The polarisation of prompt \(\psi {(2S)} \) mesons is measured by performing an angular analysis of \(\psi {(2S)} \!\rightarrow \mu ^+\mu ^- \) decays using proton-proton collision data, corresponding to an integrated luminosity of 1.0 \(\,\text{ fb }^{-1} \) , collected by the LHCb detector at a centre-of-mass energy of 7?TeV. The polarisation is measured in bins of transverse momentum \(p_\mathrm{T} \) and rapidity \(y\) in the kinematic region \(3.5< p_\mathrm{T} <15{\mathrm {\,GeV\!/}c} \) and \(2.0<y<4.5\) , and is compared to theoretical models. No significant polarisation is observed.