The production cross-section of the χc1(3872) state relative to the ψ(2S) meson is measured using proton-proton collision data collected with the LHCb experiment at centre-of-mass energies of s = 8 and 13 TeV, corresponding to integrated luminosities of 2.0 and 5.4 fb−1, respectively. The two mesons are reconstructed in the J/ψπ+π− final state. The ratios of the prompt and nonprompt χc1(3872) to ψ(2S) production cross-sections are measured as a function of transverse momentum, pT, and rapidity, y, of the χc1(3872) and ψ(2S) states, in the kinematic range 4 < pT< 20 GeV/c and 2.0 < y < 4.5. The prompt ratio is found to increase with pT, independently of y. For the prompt component, the double ratio of the χc1(3872) and ψ(2S) production cross-sections between 13 and 8 TeV is observed to be consistent with unity, independent of pT and centre-of-mass energy. [Figure not available: see fulltext.].

Aaij, R., Abdelmotteleb, A., Abellan Beteta, C., Abudinen Gallego, F., Ackernley, T., Adeva, B., et al. (2022). Measurement of χc1(3872) production in proton-proton collisions at √s = 8 and 13 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2022(1) [10.1007/JHEP01(2022)131].

Measurement of χc1(3872) production in proton-proton collisions at √s = 8 and 13 TeV

Calvi M.;Capelli S.;Carniti P.;Fazzini D.;Garcia Pardinas J.;Gotti C.;Martinazzoli L.;Martinelli M.;Meloni S.;Minotti A.;Petruzzo M.;Pizzichemi M.;Shields E. B.;
2022

Abstract

The production cross-section of the χc1(3872) state relative to the ψ(2S) meson is measured using proton-proton collision data collected with the LHCb experiment at centre-of-mass energies of s = 8 and 13 TeV, corresponding to integrated luminosities of 2.0 and 5.4 fb−1, respectively. The two mesons are reconstructed in the J/ψπ+π− final state. The ratios of the prompt and nonprompt χc1(3872) to ψ(2S) production cross-sections are measured as a function of transverse momentum, pT, and rapidity, y, of the χc1(3872) and ψ(2S) states, in the kinematic range 4 < pT< 20 GeV/c and 2.0 < y < 4.5. The prompt ratio is found to increase with pT, independently of y. For the prompt component, the double ratio of the χc1(3872) and ψ(2S) production cross-sections between 13 and 8 TeV is observed to be consistent with unity, independent of pT and centre-of-mass energy. [Figure not available: see fulltext.].
Articolo in rivista - Articolo scientifico
Hadron-Hadron Scattering;
English
Aaij, R., Abdelmotteleb, A., Abellan Beteta, C., Abudinen Gallego, F., Ackernley, T., Adeva, B., et al. (2022). Measurement of χc1(3872) production in proton-proton collisions at √s = 8 and 13 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2022(1) [10.1007/JHEP01(2022)131].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/362742
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