RT Journal Article
T1 Measurement of the exclusive Υ production cross-section in pp collisions at √s=7 TeV and 8 TeV
A1 LHCb Collaboration, 
A1 Adeva Andany, Bernardo
A1 Dosil Suárez, Álvaro
A1 Fernández Albor, Víctor Manuel
A1 Gallas Torreira, Abraham Antonio
A1 García Pardiñas, Julián
A1 Hernando Morata, José Ángel
A1 Lucio Martínez, Miriam
A1 Plo Casasus, Máximo
A1 Romero Vidal, Antonio
A1 Saborido Silva, Juan José
A1 Sanmartín Sedes, Brais
A1 Santamarina Ríos, Cibrán
A1 Vázquez Regueiro, Pablo
A1 Vázquez Sierra, Carlos
A1 Vieites Díaz, María
K1 Diffraction
K1 Hadron-Hadron Scattering
K1 Forward physics
K1 Particle and resonance production
K1 Heavy quark production
AB 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 areσ(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.
PB Springer
SN 1029-8479
YR 2015
FD 2015
LK http://hdl.handle.net/10347/22073
UL http://hdl.handle.net/10347/22073
LA eng
NO 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
DS Minerva
RD 22 abr 2026