HEPData

Abstract (data abstract)

CERN-LHC. The prompt and non-prompt production cross-sections for the chi_c1 and chi_c2 charmonium states are measured in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector at the LHC using 4.5 fb-1 of integrated luminosity. The chi_c states are reconstructed through the radiative decay chi_c --> J/psi + gamma (with J/psi --> mu+ mu-) where photons are reconstructed from gamma --> e+ e- conversions. The differential cross sections for both prompt and non-prompt production of the chi_c1 and chi_c2 states are measured as a function of both J/psi and chi_c pT. The fraction of prompt J/psi produced in feed-down from radiative chi_c decays is also measured in addition to the production rate of chi_c2 relative to chi_c1, for both prompt and non-prompt chi_c production. The measurements have not been corrected for the chi_c --> J/psi + gamma and J/psi --> mu+ mu- branching fractions. All measurements are made within the fiducial region ABS(YRAP(J/PSI)) < 0.75.

Table 1

Data from Figure 3a, Table 5

10.17182/hepdata.64242.v1/t1

Differential cross-section for prompt chi_c1 production, measured in bins of J/psi pT, assuming unpolarised chi_c production. The measurements are not...
https://www.hepdata.net/record/data/56569yaml https://www.hepdata.net/record/data/56569/csvcsv
Table 2

Data from Figure 3b, Table 5

10.17182/hepdata.64242.v1/t2

Differential cross-section for prompt chi_c2 production, measured in bins of J/psi pT, assuming unpolarised chi_c production. The measurements are not...
https://www.hepdata.net/record/data/56571yaml https://www.hepdata.net/record/data/56571/csvcsv
Table 3

Data from Figure 5a, Table 6

10.17182/hepdata.64242.v1/t3

Differential cross-section for non-prompt chi_c1 production, measured in bins of J/psi pT, assuming unpolarised chi_c production. The measurements are not...
https://www.hepdata.net/record/data/56572yaml https://www.hepdata.net/record/data/56572/csvcsv
Table 4

Data from Figure 5a, Table 6

10.17182/hepdata.64242.v1/t4

Differential cross-section for non-prompt chi_c2 production, measured in bins of J/psi pT, assuming unpolarised chi_c production. The measurements are not...
https://www.hepdata.net/record/data/56573yaml https://www.hepdata.net/record/data/56573/csvcsv
Table 5

Data from Figure 4a, Table 7

10.17182/hepdata.64242.v1/t5

Differential cross-section for prompt chi_c1 production, measured in bins of chi_c1 pT, assuming unpolarised chi_c production. The measurements are not...
https://www.hepdata.net/record/data/56574yaml https://www.hepdata.net/record/data/56574/csvcsv
Table 6

Data from Figure 4b, Table 7

10.17182/hepdata.64242.v1/t6

Differential cross-section for prompt chi_c2 production, measured in bins of chi_c2 pT, assuming unpolarised chi_c production. The measurements are not...
https://www.hepdata.net/record/data/56575yaml https://www.hepdata.net/record/data/56575/csvcsv
Table 7

Data from Figure 5b, Table 8

10.17182/hepdata.64242.v1/t7

Differential cross-section for non-prompt chi_c1 production, measured in bins of chi_c1 pT, assuming unpolarised chi_c production. The measurements are not...
https://www.hepdata.net/record/data/56576yaml https://www.hepdata.net/record/data/56576/csvcsv
Table 8

Data from Figure 5b, Table 8

10.17182/hepdata.64242.v1/t8

Differential cross-section for non-prompt chi_c2 production, measured in bins of chi_c2 pT, assuming unpolarised chi_c production. The measurements are not...
https://www.hepdata.net/record/data/56577yaml https://www.hepdata.net/record/data/56577/csvcsv
Table 9

Data from Figure 6, Table 9

10.17182/hepdata.64242.v1/t9

Fraction of prompt J/psi produced in feed-down from radiative chi_c decays as a function of J/psi pT, assuming unpolarised chi_c...
https://www.hepdata.net/record/data/56578yaml https://www.hepdata.net/record/data/56578/csvcsv
Table 10

Data from Figure 7, Table 10

10.17182/hepdata.64242.v1/t10

Production rate of prompt chi_c2 relative to prompt chi_c1, measured in bins of J/psi pT, assuming unpolarised chi_c production. The...
https://www.hepdata.net/record/data/56579yaml https://www.hepdata.net/record/data/56579/csvcsv
Table 11

Data from Figure 8, Table 11

10.17182/hepdata.64242.v1/t11

Production rate of non-prompt chi_c2 relative to non-prompt chi_c1, measured in bins of J/psi pT, assuming unpolarised chi_c production. The...
https://www.hepdata.net/record/data/56580yaml https://www.hepdata.net/record/data/56580/csvcsv
Table 12

Data from Figure 9, Table 12

10.17182/hepdata.64242.v1/t12

Fraction of chi_c1 produced in b-hadron decays as a function of chi_c1 pT, assuming unpolarised chi_c production. The uncertainty envelope...
https://www.hepdata.net/record/data/56581yaml https://www.hepdata.net/record/data/56581/csvcsv
Table 13

Data from Figure 9, Table 12

10.17182/hepdata.64242.v1/t13

Fraction of chi_c2 produced in b-hadron decays as a function of chi_c2 pT, assuming unpolarised chi_c production. The uncertainty envelope...
https://www.hepdata.net/record/data/56582yaml https://www.hepdata.net/record/data/56582/csvcsv

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