The inclusive bb¯ - and cc¯ -dijet production cross-sections in the forward region of pp collisions are measured using a data sample collected with the LHCb detector at a centre-of-mass energy of 13 TeV in 2016. The data sample corresponds to an integrated luminosity of 1.6 fb−1. Differential cross-sections are measured as a function of the transverse momentum and of the pseudorapidity of the leading jet, of the rapidity difference between the jets, and of the dijet invariant mass. A fiducial region for the measurement is defined by requiring that the two jets originating from the two b or c quarks are emitted with transverse momentum greater than 20 GeV/c, pseudorapidity in the range 2.2 < η < 4.2, and with a difference in the azimuthal angle between the two jets greater than 1.5. The integrated bb¯ -dijet cross-section is measured to be 53.0 ± 9.7 nb, and the total cc¯ -dijet cross-section is measured to be 73 ± 16 nb. The ratio between cc¯ - and bb¯ -dijet cross-sections is also measured and found to be 1.37 ± 0.27. The results are in agreement with theoretical predictions at next-to-leading order. [Figure not available: see fulltext.]

Aaij, R., Abellan Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., et al. (2021). Measurement of differential bb¯ - and cc¯ -dijet cross-sections in the forward region of pp collisions at √s = 13 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2021(2) [10.1007/JHEP02(2021)023].

Measurement of differential bb¯ - and cc¯ -dijet cross-sections in the forward region of pp collisions at √s = 13 TeV

Borsato M.;Calvi M.;Capelli S.;Carniti P.;Fazzini D.;Garcia Pardinas J.;Gotti C.;Martinazzoli L.;Martinelli M.;Meloni S.;Petruzzo M.;Shields E.;
2021

Abstract

The inclusive bb¯ - and cc¯ -dijet production cross-sections in the forward region of pp collisions are measured using a data sample collected with the LHCb detector at a centre-of-mass energy of 13 TeV in 2016. The data sample corresponds to an integrated luminosity of 1.6 fb−1. Differential cross-sections are measured as a function of the transverse momentum and of the pseudorapidity of the leading jet, of the rapidity difference between the jets, and of the dijet invariant mass. A fiducial region for the measurement is defined by requiring that the two jets originating from the two b or c quarks are emitted with transverse momentum greater than 20 GeV/c, pseudorapidity in the range 2.2 < η < 4.2, and with a difference in the azimuthal angle between the two jets greater than 1.5. The integrated bb¯ -dijet cross-section is measured to be 53.0 ± 9.7 nb, and the total cc¯ -dijet cross-section is measured to be 73 ± 16 nb. The ratio between cc¯ - and bb¯ -dijet cross-sections is also measured and found to be 1.37 ± 0.27. The results are in agreement with theoretical predictions at next-to-leading order. [Figure not available: see fulltext.]
Articolo in rivista - Articolo scientifico
Charm physics; Forward physics; Hadron-Hadron scattering (experiments); Jet physics; QCD;
English
2021
2021
2
23
none
Aaij, R., Abellan Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., et al. (2021). Measurement of differential bb¯ - and cc¯ -dijet cross-sections in the forward region of pp collisions at √s = 13 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2021(2) [10.1007/JHEP02(2021)023].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/304340
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