The production cross-sections of Υ mesons, namely Υ(1S), Υ(2S) and Υ(3S), in pp collisions at √s = 5 TeV are measured with a data sample corresponding to an integrated luminosity of 9.13 ± 0.18 pb^−1 collected by the LHCb detector. The Υ mesons are reconstructed in the decay mode Υ → μ+ μ−. Double differential cross-sections times branching fractions, as functions of the transverse momentum p_T and the rapidity y of the Υ mesons, are measured in the range p_T < 20 GeV/c and 2.0 < y < 4.5. The results integrated over these p_T and y ranges are σ(Y(1S)) × B(Y(1S) → μ+ μ−) = 2101 ± 33 ± 83 pb, σ(Y(2S)) × B(Y(2S) → μ+ μ−) = 526 ± 20 ± 21 pb, σ(Y(3S)) × B(Y(3S) → μ+ μ−) = 242 ± 16 ± 10 pb, where the first uncertainties are statistical and the second are systematic. The ratios of cross-sections between measurements of two different Υ states and between measurements at different centre-of-mass energies are determined. The nuclear modification factor of Υ(1S) at √s = 5 TeV is updated as well using the directly measured cross-section results from this analysis.

Aaij, R., Abdelmotteleb, A.S.W., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., et al. (2023). Measurement of Υ Production in pp Collisions at √s = 5 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2023(7), 0-32 [10.1007/jhep07(2023)069].

Measurement of Υ Production in pp Collisions at √s = 5 TeV

Carbone, A.;Ferrari, F.;Galli, D.;Manuzzi, D.;Patrignani, C.;Spedicato, E.;Villa, A.;Zucchelli, S.;
2023

Abstract

The production cross-sections of Υ mesons, namely Υ(1S), Υ(2S) and Υ(3S), in pp collisions at √s = 5 TeV are measured with a data sample corresponding to an integrated luminosity of 9.13 ± 0.18 pb^−1 collected by the LHCb detector. The Υ mesons are reconstructed in the decay mode Υ → μ+ μ−. Double differential cross-sections times branching fractions, as functions of the transverse momentum p_T and the rapidity y of the Υ mesons, are measured in the range p_T < 20 GeV/c and 2.0 < y < 4.5. The results integrated over these p_T and y ranges are σ(Y(1S)) × B(Y(1S) → μ+ μ−) = 2101 ± 33 ± 83 pb, σ(Y(2S)) × B(Y(2S) → μ+ μ−) = 526 ± 20 ± 21 pb, σ(Y(3S)) × B(Y(3S) → μ+ μ−) = 242 ± 16 ± 10 pb, where the first uncertainties are statistical and the second are systematic. The ratios of cross-sections between measurements of two different Υ states and between measurements at different centre-of-mass energies are determined. The nuclear modification factor of Υ(1S) at √s = 5 TeV is updated as well using the directly measured cross-section results from this analysis.
2023
Aaij, R., Abdelmotteleb, A.S.W., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., et al. (2023). Measurement of Υ Production in pp Collisions at √s = 5 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2023(7), 0-32 [10.1007/jhep07(2023)069].
Aaij, R.; Abdelmotteleb, A. S. W.; Abellan Beteta, C.; Abudinén, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Adlarson, P.; Afsharnia, H.; Agapopoulou,...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/952009
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