Measurement of the inclusive J/[psi] polarization at forward rapidity in pp collisions at √s=8 TeV
We report on the measurement of the inclusive J/ψψ\psi polarization parameters in pp collisions at a center of mass energy s√=8s=8\sqrt{s} = 8 TeV with the ALICE detector at the LHC. The analysis is based on a data sample corresponding to an integrated luminosity of 1.23 pb−1−1^{-1}. J/ψψ\psi resona...
Gespeichert in:
| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
9 July 2018
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| In: |
The European physical journal. C, Particles and fields
Year: 2018, Jahrgang: 78, Heft: 6 |
| ISSN: | 1434-6052 |
| DOI: | 10.1140/epjc/s10052-018-6027-2 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1140/epjc/s10052-018-6027-2 Verlag, Volltext: https://link.springer.com/content/pdf/10.1140%2Fepjc%2Fs10052-018-6027-2.pdf 
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| Verfasserangaben: | ALICE Collaboration* |
MARC
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| 245 | 1 | 0 | |a Measurement of the inclusive J/[psi] polarization at forward rapidity in pp collisions at √s=8 TeV |c ALICE Collaboration* |
| 246 | 3 | 0 | |a sqrt |
| 246 | 3 | 0 | |a ψ, root |
| 246 | 3 | 3 | |a Measurement of the inclusive J/psi polarization at forward rapidity in pp collisions at square root s = 8 TeV |
| 264 | 1 | |c 9 July 2018 | |
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| 500 | |a Im Titel wird psi als griechischer Buchstabe dargestellt | ||
| 500 | |a ALICE Collaboration: S. Acharya, V. Anguelov, M. Arslandok, M.C. Danisch, A. Deisting, V. Feuillard, P. Glässel, J. Kim, M.K. Köhler, S. Klewin, L. Leardini, J. Mercado Pérez, A. Ohlson, Y. Pachmayer, K. Reygers, R. Schicker, M.O. Schmidt, J. Stachel, D.F. Weiser, B. Windelband [und weitere] | ||
| 500 | |a Gesehen am 24.06.2019 | ||
| 520 | |a We report on the measurement of the inclusive J/ψψ\psi polarization parameters in pp collisions at a center of mass energy s√=8s=8\sqrt{s} = 8 TeV with the ALICE detector at the LHC. The analysis is based on a data sample corresponding to an integrated luminosity of 1.23 pb−1−1^{-1}. J/ψψ\psi resonances are reconstructed in their di-muon decay channel in the rapidity interval 2.5<y<4.02.5<y<4.02.5< y < 4.0 and over the transverse-momentum interval 2<pT<152<pT<152< p_\mathrm{T} < 15 GeV/cGeV/c\mathrm {GeV}/c. The three polarization parameters (λθλθ\lambda _\theta , λφλφ\lambda _\varphi , λθφλθφ\lambda _{\theta \varphi }) are measured as a function of pTpTp_\mathrm{T} both in the helicity and Collins-Soper reference frames. The measured J/ψψ\psi polarization parameters are found to be compatible with zero within uncertainties, contrary to expectations from all available predictions. The results are compared with the measurement in pp collisions at s√=7s=7\sqrt{s} = 7 TeV. | ||
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