CMS-PAS-BPH-15-004 | ||
Measurement of the B+ hadron production cross section in pp collisions at 13 TeV | ||
CMS Collaboration | ||
December 2015 | ||
Abstract: The B+ meson differential cross sections, as a function of transverse momentum and rapidity, are measured in pp collisions at center-of-mass energy √s= 13 TeV, on the basis of a data sample collected by the CMS experiment, corresponding to an integrated luminosity of 50.8 pb−1. The measurement uses the exclusive decay channel B+→J/ψK+, with the J/ψ decaying to a pair of muons. The results are compared with theory calculations and with measurements made at 7 TeV. | ||
Links:
CDS record (PDF) ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, PLB 771 (2017) 435. The superseded preliminary plots can be found here. |
Figures | |
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Figure 1:
Invariant mass distribution of the B+→Jψ K+ candidates, integrated in the phase space region 10 <pTB< 100 GeV and |yB|< 2.4. The solid curve shows the result of the fit. The shaded area represents the signal component, while the dashed and dash-dotted curves represent the combinatorial and mis-reconstructed B→Jψ K+X background components, respectively. |
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Figure 2-a:
Invariant mass distributions of the B+→Jψ K+ candidates in the regions of 3 ≤pTB< 17 GeV (a) and 0.4 ≤|yB|< 0.6 (b). The solid curve shows the result of the fit. The shaded area represents the signal component, while the dashed and dash-dotted curves represent the combinatorial and mis-reconstructed B→Jψ K+X background components, respectively. |
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Figure 2-b:
Invariant mass distributions of the B+→Jψ K+ candidates in the regions of 3 ≤pTB< 17 GeV (a) and 0.4 ≤|yB|< 0.6 (b). The solid curve shows the result of the fit. The shaded area represents the signal component, while the dashed and dash-dotted curves represent the combinatorial and mis-reconstructed B→Jψ K+X background components, respectively. |
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Figure 3-a:
Differential cross sections dσ/dpTB for |yB|< 2.4 (a) and dσ/dyB for 10 <pTB< 100 GeV (b), for B+ production in pp collisions at √s= 13 TeV. See the text for details. |
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Figure 3-b:
Differential cross sections dσ/dpTB for |yB|< 2.4 (a) and dσ/dyB for 10 <pTB< 100 GeV (b), for B+ production in pp collisions at √s= 13 TeV. See the text for details. |
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Compact Muon Solenoid LHC, CERN |
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