Measurement of the relative B±c/B± production cross section with the ATLAS detector at √s=8  TeV

ATLAS Publications, M. Faucci Giannelli, A. Hasib, M.P. Heath, X. Hoad, S. Palazzo, A. Søgaard, A. Strubig, E.P. Takeva, A.J. Taylor, A. Washbrook

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

The total cross section and differential cross sections for the production of B±c mesons, times their branching fraction to J/ψπ±, are measured relative to those for the production of B± mesons, times their branching fraction to J/ψK±. The data used for this study correspond to an integrated luminosity of 20.3  fb−1 of pp collisions recorded by the ATLAS detector at the Large Hadron Collider in 2012 at a center-of-mass energy of √s=8  TeV. The measurement is performed differentially in bins of transverse momentum pT for 13  GeV<pT(B±c)<22  GeV and pT(B±c)>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 pT>13  GeV and |y|<2.3 is (0.34±0.04stat +0.06−0.02sys±0.01lifetime)%. The differential measurements suggest that the production cross section of the B±c decreases faster with pT than the production cross section of the B±, while no significant dependence on rapidity is observed.
Original languageEnglish
Article number012010
Pages (from-to)1-26
Number of pages26
JournalPhysical Review D
Volume104
Issue number1
DOIs
Publication statusPublished - 26 Jul 2021

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