User

Roles
Anonymous

Measurement of inclusive charged-particle b-jet production in pp and p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV

Description
Figures from paper submitted to Journal of High Energy Physics
Abstract:

A measurement of the inclusive b-jet production cross section is presented in pp and p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV, using data collected with the ALICE detector at the LHC. The jets were reconstructed in the central rapidity region $|\eta|<~0.5$ from charged particles using the anti-$k_{\rm T}$ algorithm with resolution parameter $R=0.4$. Identification of b jets exploits the long lifetime of b hadrons, using the properties of secondary vertices and impact parameter distributions. The $p_{\rm T}$-differential inclusive production cross section of b jets, as well as the corresponding inclusive b-jet fraction, are reported for pp and p-Pb collisions in the jet transverse momentum range $10 \le p_{\text{T, ch jet}} \le 100$ GeV/$c$, together with the nuclear modification factor, $R_{\rm pPb}^{\text{b-jet}}$. The analysis thus extends the lower $p_{\rm T}$ limit of b-jet measurements at the LHC. The nuclear modification factor is found to be consistent with unity, indicating that the production of b jets in p-Pb at $\sqrt{s_{\rm NN}} = 5.02$ TeV is not affected by cold nuclear matter effects within the current precision. The measurements are well reproduced by POWHEG NLO pQCD calculations with PYTHIA fragmentation.

JHEP 01 (2022) 178
e-Print: arXiv:2110.06104 | PDF | inSPIRE

Paper:

Figure 1
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
IPsFlavor_1.eps
Figure image (.pdf)
IPsFlavor_1.pdf
Figure 2
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
LnJPFlavor_1.eps
Figure image (.pdf)
LnJPFlavor_1.pdf
Figure 3a
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
Lxy_pp_PYTHIA_1.eps
Figure image (.pdf)
Lxy_pp_PYTHIA_1.pdf
Figure 3b
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
sigma_pp_PYTHIA_1.eps
Figure image (.pdf)
sigma_pp_PYTHIA_1.pdf
Figure 4a
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
Lxy_1.eps
Figure image (.pdf)
Lxy_1.pdf
Figure 4b
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
sigma_1.eps
Figure image (.pdf)
sigma_1.pdf
Figure 5a
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
LnJP_Untagged_1.eps
Figure image (.pdf)
LnJP_Untagged_1.pdf
Figure 5b
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
LnJP_Tagged_1.eps
Figure image (.pdf)
LnJP_Tagged_1.pdf
Figure 6
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
Efficiency_Data_1.eps
Figure image (.pdf)
Efficiency_Data_1.pdf
Figure 7
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
bjet_tagging_efficiency_1.eps
Figure image (.pdf)
bjet_tagging_efficiency_1.pdf
Figure 8
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
Purity_Data_1.eps
Figure image (.pdf)
Purity_Data_1.pdf
Figure 9a
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
Minuit_fit_pp_1.eps
Figure image (.pdf)
Minuit_fit_pp_1.pdf
Figure 10a
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
bjetSV_purity_hybrid_pp_L7S3_1.eps
Figure image (.pdf)
bjetSV_purity_hybrid_pp_L7S3_1.pdf
Figure 10b
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
bjetSV_purity_hybrid_pPb_L7S3_1.eps
Figure image (.pdf)
bjetSV_purity_hybrid_pPb_L7S3_1.pdf
Figure 11a
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
bjet_Comparison_IPvsSV_pp_1.eps
Figure image (.pdf)
bjet_Comparison_IPvsSV_pp_1.pdf
Figure 11b
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
bjet_Comparison_IPvsSV_pPb_1.eps
Figure image (.pdf)
bjet_Comparison_IPvsSV_pPb_1.pdf
Figure 12a
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
bjet_pp_Final_1.eps
Figure image (.pdf)
bjet_pp_Final_1.pdf
Figure 12b
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
bjet_pPb_Final_1.eps
Figure image (.pdf)
bjet_pPb_Final_1.pdf
Figure 13a
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
bjet_Fraction_pp_Merged_1.eps
Figure image (.pdf)
bjet_Fraction_pp_Merged_1.pdf
Figure 13b
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
bjet_Fraction_pPb_Merged_1.eps
Figure image (.pdf)
bjet_Fraction_pPb_Merged_1.pdf
Figure 14a
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
bjet_Comparison_IPvsSV_RpPb_1.eps
Figure image (.pdf)
bjet_Comparison_IPvsSV_RpPb_1.pdf
Figure 14b
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
bjet_RpPb_Final_1.eps
Figure image (.pdf)
bjet_RpPb_Final_1.pdf
Figure 15
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
bjet_RpPb_CMS_Comp_1.eps
Figure image (.pdf)
bjet_RpPb_CMS_Comp_1.pdf
Figure 16
Energy
5.02 TeV
System
p-p
p-Pb
Scope: PWG
PWG-HF (Heavy Flavour)
Figure image (.eps)
Incjet_RpPb_Comp_1.eps
Figure image (.pdf)
Incjet_RpPb_Comp_1.pdf