Measurement of the exclusive Υ production cross-section in pp collisions at √s=7 TeV and 8 TeV
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http://hdl.handle.net/10347/22073
Título: | Measurement of the exclusive Υ production cross-section in pp collisions at √s=7 TeV and 8 TeV
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Autor/a: | LHCb Collaboration
Adeva Andany, Bernardo
Dosil Suárez, Álvaro
Fernández Albor, Víctor Manuel
Gallas Torreira, Abraham Antonio
García Pardiñas, Julián
Hernando Morata, José Ángel
Lucio Martínez, Miriam
Plo Casasus, Máximo
Romero Vidal, Antonio
Saborido Silva, Juan José
Sanmartín Sedes, Brais
Santamarina Ríos, Cibrán
Vázquez Regueiro, Pablo
Vázquez Sierra, Carlos
Vieites Díaz, María
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Centro/Departamento: | Universidade de Santiago de Compostela. Departamento de Física de Partículas Universidade de Santiago de Compostela. Instituto Galego de Física de Altas Enerxías (IGFAE)
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Palabras chave: | Diffraction | Hadron-Hadron Scattering | Forward physics | Particle and resonance production | Heavy quark production | |
Data: | 2015
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Editor: | Springer
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Cita bibliográfica: | Aaij, R., Adeva, B., Adinolfi, M. et al. Measurement of the exclusive Υ production cross-section in pp collisions at √s=7 TeV and 8 TeV. J. High Energ. Phys. 2015, 84 (2015). https://doi.org/10.1007/JHEP09(2015)084
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Resumo: | A study is presented of central exclusive production of Υ(nS) states, where the Υ(nS) resonances decay to the μ + μ − final state, using pp collision data recorded by the LHCb experiment. The cross-section is measured in the rapidity range 2 < y(Υ) < 4.5 where the muons are reconstructed in the pseudorapidity range 2 < η(μ ±) < 4.5. The data sample corresponds to an integrated luminosity of 2.9 fb−1 and was collected at centre-of-mass energies of 7 TeV and 8 TeV. The measured Υ(1S) and Υ(2S) production cross-sections are
σ(pp→pY(1S)p)=9.0±2.1±1.7pbandσ(pp→pY(2S)p)=1.3±0.8±0.3pb,
where the first uncertainties are statistical and the second are systematic. The Υ(1S) crosssection is also measured as a function of rapidity and is found to be in good agreement with Standard Model predictions. An upper limit is set at 3.4 pb at the 95% confidence level for the exclusive Υ(3S) production cross-section, including possible contamination from χ b (3P ) → Υ(3S)γ decays. |
Versión do editor: | https://doi.org/10.1007/JHEP09(2015)084 |
URI: | http://hdl.handle.net/10347/22073
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DOI: | 10.1007/JHEP09(2015)084 |
ISSN: | 1029-8479
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Dereitos: | © CERN, for the benefit of the LHCb Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0), which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
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