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

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The inclusive $$ b\overline{b} $$- and $$ c\overline{c} $$-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...

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Main Authors: Aaij, Roel (Author) , Archilli, Flavio (Author) , Bachmann, Sebastian (Author) , Berninghoff, Daniel (Author) , Borsato, Martino (Author) , Dziewiecki, Michal (Author) , Frau, Giulia (Author) , Gerick, David (Author) , Grabowski, Jascha (Author) , Günther, Paul André (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Hu, Jiangqiao (Author) , Kopecná, Renata (Author) , Leverington, Blake (Author) , Li, Peilian (Author) , Malygina, Hanna (Author) , Marks, Jörg (Author) , Meinert, N. (Author) , Morris, A. B. (Author) , Neubert, Sebastian (Author) , Piucci, Alessio (Author) , Sarpis, Mindaugas (Author) , Schmelling, Michael (Author) , Skidmore, Nicola (Author) , Stemmle, Simon (Author) , Unverzagt, Daniel Joachim (Author) , Uwer, Ulrich (Author) , Viemann, Harald (Author) , Waldi, Roland (Author) , Wang, Chishuai (Author) , Witola, Lukas (Author) , Zavertyaev, M. (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 02 February 2021
In: Journal of high energy physics
Year: 2021, Issue: 2, Pages: 1-37
ISSN:1029-8479
DOI:10.1007/JHEP02(2021)023
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/JHEP02(2021)023
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Author Notes:R. Aaij et al. (The LHCb collaboration)
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Summary:The inclusive $$ b\overline{b} $$- and $$ c\overline{c} $$-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 $$ b\overline{b} $$-dijet cross-section is measured to be 53.0 ± 9.7 nb, and the total $$ c\overline{c} $$-dijet cross-section is measured to be 73 ± 16 nb. The ratio between $$ c\overline{c} $$- and $$ b\overline{b} $$-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.
Item Description:Im Titel steht der Buchstabe s unter dem Wurzelsymbol
Gesehen am 12.03.2021
Physical Description:Online Resource
ISSN:1029-8479
DOI:10.1007/JHEP02(2021)023

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