Forward top quark pair production is studied in pp collisions in the μeb final state using a data sample corresponding to an integrated luminosity of 1.93 fb−1 collected with the LHCb experiment at a centre-of-mass energy of 13 TeV. The cross-section is measured in a fiducial region where both leptons have a transverse momentum greater than 20 GeV and a pseudorapidity between 2.0 and 4.5. The quadrature sum of the azimuthal separation and the difference in pseudorapidities, denoted ΔR, between the two leptons must be larger than 0.1. The b-jet axis is required to be separated from both leptons by a ΔR of 0.5, and to have a transverse momentum in excess of 20 GeV and a pseudorapidity between 2.2 and 4.2. The cross-section is measured to be σ(tt¯) = 126 ± 19(stat) ± 16(syst) ± 5(lumi) fb where the first uncertainty is statistical, the second is systematic, and the third is due to the luminosity determination. The measurement is compatible with the Standard Model prediction.

Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2018). Measurement of forward top pair production in the dilepton channel in pp collisions at √s=13 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2018(8) [10.1007/JHEP08(2018)174].

Measurement of forward top pair production in the dilepton channel in pp collisions at √s=13 TeV

Belloli, N.;Borsato, M.;Calvi, M.;Carniti, P.;Cassina, L.;Fazzini, D.;Gotti, C.;Martinelli, M.;Matteuzzi, C.;Petruzzo, M.;
2018

Abstract

Forward top quark pair production is studied in pp collisions in the μeb final state using a data sample corresponding to an integrated luminosity of 1.93 fb−1 collected with the LHCb experiment at a centre-of-mass energy of 13 TeV. The cross-section is measured in a fiducial region where both leptons have a transverse momentum greater than 20 GeV and a pseudorapidity between 2.0 and 4.5. The quadrature sum of the azimuthal separation and the difference in pseudorapidities, denoted ΔR, between the two leptons must be larger than 0.1. The b-jet axis is required to be separated from both leptons by a ΔR of 0.5, and to have a transverse momentum in excess of 20 GeV and a pseudorapidity between 2.2 and 4.2. The cross-section is measured to be σ(tt¯) = 126 ± 19(stat) ± 16(syst) ± 5(lumi) fb where the first uncertainty is statistical, the second is systematic, and the third is due to the luminosity determination. The measurement is compatible with the Standard Model prediction.
Articolo in rivista - Articolo scientifico
Hadron-Hadron scattering (experiments); Heavy quark production; Jet physics; QCD; Top physics; Nuclear and High Energy Physics
English
2018
2018
8
174
open
Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2018). Measurement of forward top pair production in the dilepton channel in pp collisions at √s=13 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2018(8) [10.1007/JHEP08(2018)174].
File in questo prodotto:
File Dimensione Formato  
10281-215453.pdf

accesso aperto

Tipologia di allegato: Publisher’s Version (Version of Record, VoR)
Dimensione 437.35 kB
Formato Adobe PDF
437.35 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/215453
Citazioni
  • Scopus 22
  • ???jsp.display-item.citation.isi??? 10
Social impact