Measurement of differential <i>b</i>(<i>b</i>)over-barand <i>c</i>(<i>c</i>)over-bar-dijet cross-sections in the forward region of <i>pp</i> collisions at √<i>s</i>=13 TeV

Aaij, R, Beteta, C Abellan, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Aidala, CA, Aiola, S, Ajaltouni, Z, Akar, S
et al (show 974 more authors) (2021) Measurement of differential <i>b</i>(<i>b</i>)over-barand <i>c</i>(<i>c</i>)over-bar-dijet cross-sections in the forward region of <i>pp</i> collisions at √<i>s</i>=13 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 02 (2). 023-.

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The inclusive $b \bar{b}$- and $c \bar{c}$-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 $2.2 < \eta < 4.2$, and with a difference in the azimuthal angle between the two jets greater than 1.5. The integrated $b \bar{b}$-dijet cross-section is measured to be $53.0 \pm 9.7$ nb, and the total $c \bar{c}$-dijet cross-section is measured to be $73 \pm 16$ nb. The ratio between $c \bar{c}$- and $b \bar{b}$-dijet cross-sections is also measured and found to be $1.37 \pm 0.27$. The results are in agreement with theoretical predictions at next-to-leading order.

Item Type: Article
Additional Information: All figures and tables, along with any supplementary material and additional information, are available at (LHCb public pages)
Uncontrolled Keywords: Charm physics, Forward physics, Hadron-Hadron scattering (experiments), Jet physics, QCD
Depositing User: Symplectic Admin
Date Deposited: 24 Feb 2021 14:27
Last Modified: 18 Oct 2023 17:03
DOI: 10.1007/JHEP02(2021)023
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