Measurement of the relative B-c(+/-)/B-+/- production cross section with the ATLAS detector at root s=8 TeV



Aaboud, M, Aad, G, Abbott, B, Abbott, DC, Abdinov, O, Abud, A Abed, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL
et al (show 2902 more authors) (2021) Measurement of the relative B-c(+/-)/B-+/- production cross section with the ATLAS detector at root s=8 TeV. PHYSICAL REVIEW D, 104 (1). 012010-.

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Abstract

The total cross section and differential cross sections for the production of $B_{c}^{\pm}$ mesons, times their branching fraction to $J/\psi \pi^{\pm}$, are measured relative to those for the production of $B^{\pm}$ mesons, times their branching fraction to $J/\psi K^{\pm}$. The data used for this study correspond to an integrated luminosity of $20.3\,\mathrm{fb}^{-1}$ of $pp$ collisions recorded by the ATLAS detector at the Large Hadron Collider in 2012 at a center-of-mass energy of $\sqrt{s} = 8$ TeV. The measurement is performed differentially in bins of transverse momentum $p_{\mathrm{T}}$ for $13$ GeV $<p_{\mathrm{T}}(B_{c}^{\pm})<22$ GeV and $p_{\mathrm{T}}(B_{c}^{\pm}) > 22$ GeV and in bins of rapidity $y$ for $|y| <0.75$ and $0.75<|y|<2.3$. The relative cross section times branching fraction for the full range $p_{\mathrm T} > 13$ GeV and $|y| < 2.3$ is $(0.34\,\pm\,0.04_{\text{stat}}\,^{+0.06}_{-0.02}\,_{\text{sys}}\,\pm\,0.01_{\text{lifetime}})\%$. The differential measurements suggest that the production cross section of the $B^{\pm}_c$ decreases faster with $p_{\mathrm T}$ than the production cross section of the $B^{\pm}$, while no significant dependence on rapidity is observed.

Item Type: Article
Additional Information: 39 pages in total, author list starting page 23, 7 figures, submitted to PRD. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/BPHY-2016-03
Uncontrolled Keywords: hep-ex, hep-ex
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 31 Aug 2021 08:16
Last Modified: 18 Jan 2023 21:30
DOI: 10.1103/PhysRevD.104.012010
Open Access URL: https://journals.aps.org/prd/abstract/10.1103/Phys...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3135315