Abstract (data abstract)

Measurements of the production cross sections of prompt

D^{0}

D^{+}

D^{* +}

D_{c}^{+}

Λ_{c}^{+}

, and

Ξ_{c}^{+}

charm hadrons at midrapidity in proton

-

proton collisions at

\sqrt{s} = 13

TeV with the ALICE detector are presented. The D-meson cross sections as a function of transverse momentum (

p_{T}

) are provided with improved precision and granularity. The ratios of

p_{T}

-differential meson production cross sections based on this publication and on measurements at different rapidity and collision energy provide a constraint on gluon parton distribution functions at low values of Bjorken-

x

(

10^{- 5} - 10^{- 4}

). The measurements of

Λ_{c}^{+}

(

Ξ_{c}^{+}

) baryon production extend the measured

p_{T}

intervals down to

p_{T} = 0 (3)

~GeV

/ c

. These measurements are used to determine the charm-quark fragmentation fractions and the

c \bar{c}

production cross section at midrapidity (

| y | < 0.5

) based on the sum of the cross sections of the weakly-decaying ground-state charm hadrons

D^{0}

D^{+}

D_{c}^{+}

Λ_{c}^{+}

Ξ_{c}^{0}

and, for the first time,

Ξ_{c}^{+}

, and of the strongly-decaying

J / ψ

mesons. The first measurements of

Ξ_{c}^{+}

and

Σ_{c}^{0, +, + +}

fragmentation fractions at midrapidity are also reported. A significantly larger fraction of charm quarks hadronising to baryons is found compared to

e^{+} e^{-}

and ep collisions. The

c \bar{c}

production cross section at midrapidity is found to be at the upper bound of state-of-the-art perturbative QCD calculations.

Figure 4 Dzero pp 13 TeV

Data from Figure 4 $D^{0}$ , pp collisions at $\sqrt{s}$ = 13 TeV

10.17182/hepdata.145759.v1/t1

$p_{T}$ -differential $D^{0}$ production cross section at midrapidity ( $| y | < 0.5$ ) in pp collisions at $\sqrt{s}$ = 13 TeV Branching ratio of $D^{0} \to K^{-} π^{+}$ :...
Figure 4 Dplus pp 13 TeV

Data from Figure 4 $D^{+}$ , pp collisions at $\sqrt{s}$ = 13 TeV

10.17182/hepdata.145759.v1/t2

$p_{T}$ -differential $D^{+}$ production cross section at midrapidity ( $| y | < 0.5$ ) in pp collisions at $\sqrt{s}$ = 13 TeV Branching ratio of $D^{+} \to K^{-} π^{+} π^{+}$ :...
Figure 4 Dstar pp 13 TeV

Data from Figure 4 $D^{* +}$ , pp collisions at $\sqrt{s}$ = 13 TeV

10.17182/hepdata.145759.v1/t3

$p_{T}$ -differential $D^{+}$ production cross section at midrapidity ( $| y | < 0.5$ ) in pp collisions at $\sqrt{s}$ = 13 TeV Branching ratio of $D^{* +} \to D^{0} (\to K^{-} π^{+}) π^{+}$ :...
Figure 4 Ds pp 13 TeV

Data from Figure 4 $D_{s}^{+}$ , pp collisions at $\sqrt{s}$ = 13 TeV

10.17182/hepdata.145759.v1/t4

$p_{T}$ -differential $D_{s}^{+}$ production cross section at midrapidity ( $| y | < 0.5$ ) in pp collisions at $\sqrt{s}$ = 13 TeV Branching ratio of $D_{s}^{+} \to ϕ π^{+} \to K^{+} K^{-} π^{+}$ :...
Figure 6 Lc pp 13 TeV

Data from Figure 6 $Λ_{c}^{+}$ , pp collisions at $\sqrt{s}$ = 13 TeV

10.17182/hepdata.145759.v1/t5

$p_{T}$ -differential $Λ_{c}^{+}$ production cross section at midrapidity ( $| y | < 0.5$ ) in pp collisions at $\sqrt{s}$ = 13 TeV Global relative uncertainty on...
Figure 6 Xic pp 13 TeV

Data from Figure 6 $Ξ_{c}^{+}$ , pp collisions at $\sqrt{s}$ = 13 TeV

10.17182/hepdata.145759.v1/t6

$p_{T}$ -differential $Ξ_{c}^{+}$ production cross section at midrapidity ( $| y | < 0.5$ ) in pp collisions at $\sqrt{s}$ = 13 TeV Global relative uncertainty on...
Figure 7 Dplus over D0 pp 13 TeV

Data from Figure 7 $D^{+} / D^{0}$ , pp collisions at $\sqrt{s}$ = 13 TeV

10.17182/hepdata.145759.v1/t7

$p_{T}$ -differential $D^{+} / D^{0}$ ratio in pp collisions at $\sqrt{s}$ = 13 TeV Global relative uncertainty on BR: $1.9 %$
Figure 7 Dstar over D0 pp 13 TeV

Data from Figure 7 $D^{* +} / D^{0}$ , pp collisions at $\sqrt{s}$ = 13 TeV

10.17182/hepdata.145759.v1/t8

$p_{T}$ -differential $D^{* +} / D^{0}$ ratio in pp collisions at $\sqrt{s}$ = 13 TeV Global relative uncertainty on BR: $0.7 %$
Figure 7 Ds over D0 pp 13 TeV

Data from Figure 7 $D_{s}^{+} / D^{0}$ , pp collisions at $\sqrt{s}$ = 13 TeV

10.17182/hepdata.145759.v1/t9

$p_{T}$ -differential $D_{s}^{+} / D^{0}$ ratio in pp collisions at $\sqrt{s}$ = 13 TeV Global relative uncertainty on BR: $2.8 %$
Figure 7 Ds over Dplus pp 13 TeV

Data from Figure 7 $D_{s}^{+} / D^{+}$ , pp collisions at $\sqrt{s}$ = 13 TeV

10.17182/hepdata.145759.v1/t10

$p_{T}$ -differential $D_{s}^{+} / D^{+}$ ratio in pp collisions at $\sqrt{s}$ = 13 TeV Global relative uncertainty on BR: $3.2 %$
Figure 7 Ds over D0 Dplus pp 13 TeV

Data from Figure 7 $D_{s}^{+} / (D^{0} + D^{+})$ , pp collisions at $\sqrt{s}$ = 13 TeV

10.17182/hepdata.145759.v1/t11

$p_{T}$ -differential $D_{s}^{+} / (D^{0} + D^{+})$ ratio in pp collisions at $\sqrt{s}$ = 13 TeV Global relative uncertainty on BR: $3.3 %$
Figure 8 Lc over D0 left panel pp 13 TeV

Data from Figure 8 , left panel, pp collisions at $\sqrt{s}$ = 13 TeV

10.17182/hepdata.145759.v1/t12

$Λ_{c}^{+} / D^{0}$ in pp collisions at $\sqrt{s}$ = 13 TeV
Figure 8 Xic+ over D0 right panel pp 13 TeV

Data from Figure 8 , right panel, pp collisions at $\sqrt{s}$ = 13 TeV

10.17182/hepdata.145759.v1/t13

$Ξ_{c}^{+} / D^{0}$ in pp collisions at $\sqrt{s}$ = 13 TeV
Figure 9 D0 ratio pp 13 TeV over pp 5.02 TeV

Data from Figure 9 $D^{0}$ ratio pp 13 TeV over pp 5.02 TeV

10.17182/hepdata.145759.v1/t14

$σ (D^{0})$ $\sqrt{s}$ = 13 TeV / $σ (D^{0})$ $\sqrt{s}$ = 5.02 TeV
Figure 9 Dplus ratio pp 13 TeV over pp 5.02 TeV

Data from Figure 9 $D^{+}$ ratio pp 13 TeV over pp 5.02 TeV

10.17182/hepdata.145759.v1/t15

$σ (D^{+})$ $\sqrt{s}$ = 13 TeV $/ σ (D^{+})$ $\sqrt{s}$ = 5.02 TeV
Figure 9 Dstar ratio pp 13 TeV over pp 5.02 TeV

Data from Figure 9 $D^{* +}$ ratio pp 13 TeV over pp 5.02 TeV

10.17182/hepdata.145759.v1/t16

$σ (D^{* +})$ $\sqrt{s}$ = 13 TeV / $σ (D^{* +})$ $\sqrt{s}$ = 5.02 TeV
Figure 9 Ds ratio pp 13 TeV over pp 5.02 TeV

Data from Figure 9 $D_{s}^{+}$ ratio pp 13 TeV over pp 5.02 TeV

10.17182/hepdata.145759.v1/t17

$σ (D_{s}^{+})$ $\sqrt{s}$ = 13 TeV $/ σ (D_{s}^{+})$ $\sqrt{s}$ = 5.02 TeV
Figure 9 Lc ratio pp 13 TeV over pp 5.02 TeV

Data from Figure 9 $Λ_{c}^{+}$ ratio pp 13 TeV over pp 5.02 TeV

10.17182/hepdata.145759.v1/t18

$σ (Λ_{c}^{+})$ $\sqrt{s}$ = 13 TeV $/ σ (Λ_{c}^{+})$ $\sqrt{s}$ = 5.02 TeV
Figure 9 Xic+ ratio pp 13 TeV over Xic0 pp 5.02 TeV

Data from Figure 9 $Ξ_{c}^{+}$ ratio pp 13 TeV over $Ξ_{c}^{0}$ pp 5.02 TeV

10.17182/hepdata.145759.v1/t19

$σ (Ξ_{c}^{+})$ $\sqrt{s}$ = 13 TeV $/ σ (Ξ_{c}^{0})$ $\sqrt{s}$ = 5.02 TeV
Figure 9 Xic0 ratio pp 13 TeV over pp 5.02 TeV

Data from Figure 9 $Ξ_{c}^{0}$ ratio pp 13 TeV over pp 5.02 TeV

10.17182/hepdata.145759.v1/t20

$σ (Ξ_{c}^{0})$ $\sqrt{s}$ = 13 TeV / $σ (Ξ_{c}^{0})$ $\sqrt{s}$ = 5.02 TeV
Figure 10 D0 y range 0

Data from Figure 10, $D^{0}$ pp collisions at $\sqrt{s} = 13$ TeV

10.17182/hepdata.145759.v1/t21

$D^{0}$ ratio | $y$ | < 0.5 / $2 < y < 2.5$ in pp collisions at $\sqrt{s}$ = 13 TeV
Figure 10 D0 y range 1

Data from Figure 10, $D^{0}$ pp collisions at $\sqrt{s} = 13$ TeV

10.17182/hepdata.145759.v1/t22

$D^{0}$ ratio | $y$ | < 0.5 / $3 < y < 3.5$ in pp collisions at $\sqrt{s}$ = 13 TeV
Figure 10 D0 y range 2

Data from Figure 10, $D^{0}$ pp collisions at $\sqrt{s} = 13$ TeV

10.17182/hepdata.145759.v1/t23

$D^{0}$ ratio | $y$ | < 0.5 / $4 < y < 4.5$ in pp collisions at $\sqrt{s}$ = 13 TeV
Figure 10 Dplus y range 0

Data from Figure 10, $D^{+}$ pp collisions at $\sqrt{s} = 13$ TeV

10.17182/hepdata.145759.v1/t24

$D^{+}$ ratio | $y$ | < 0.5 / $2 < y < 2.5$ in pp collisions at $\sqrt{s}$ = 13 TeV
Figure 10 Dplus y range 1

Data from Figure 10, $D^{+}$ pp collisions at $\sqrt{s} = 13$ TeV

10.17182/hepdata.145759.v1/t25

$D^{+}$ ratio | $y$ | < 0.5 / $3 < y < 3.5$ in pp collisions at $\sqrt{s}$ = 13 TeV
Figure 10 Dplus y range 2

Data from Figure 10, $D^{+}$ pp collisions at $\sqrt{s} = 13$ TeV

10.17182/hepdata.145759.v1/t26

$D^{+}$ ratio | $y$ | < 0.5 / $4 < y < 4.5$ in pp collisions at $\sqrt{s}$ = 13 TeV
Figure 10 Dstar y range 0

Data from Figure 10, $D^{* +}$ pp collisions at $\sqrt{s} = 13$ TeV

10.17182/hepdata.145759.v1/t27

$D^{* +}$ ratio | $y$ | < 0.5 / $2 < y < 2.5$ in pp collisions at $\sqrt{s}$ = 13 TeV
Figure 10 Dstar y range 1

Data from Figure 10, $D^{* +}$ pp collisions at $\sqrt{s} = 13$ TeV

10.17182/hepdata.145759.v1/t28

$D^{* +}$ ratio | $y$ | < 0.5 / $3 < y < 3.5$ in pp collisions at $\sqrt{s}$ = 13 TeV
Figure 10 Dstar y range 2

Data from Figure 10, $D^{* +}$ pp collisions at $\sqrt{s} = 13$ TeV

10.17182/hepdata.145759.v1/t29

$D^{* +}$ ratio | $y$ | < 0.5 / $4 < y < 4.5$ in pp collisions at $\sqrt{s}$ = 13 TeV
Figure 10 Ds y range 0

Data from Figure 10, $D_{s}^{+}$ pp collisions at $\sqrt{s} = 13$ TeV

10.17182/hepdata.145759.v1/t30

$D_{s}^{+}$ ratio | $y$ | < 0.5 / $2 < y < 2.5$ in pp collisions at $\sqrt{s}$ = 13 TeV
Figure 10 Ds y range 1

Data from Figure 10, $D_{s}^{+}$ pp collisions at $\sqrt{s} = 13$ TeV

10.17182/hepdata.145759.v1/t31

$D_{s}^{+}$ ratio | $y$ | < 0.5 / $3 < y < 3.5$ in pp collisions at $\sqrt{s}$ = 13 TeV
Figure 10 Ds y range 2

Data from Figure 10, $D_{s}^{+}$ pp collisions at $\sqrt{s} = 13$ TeV

10.17182/hepdata.145759.v1/t32

$D_{s}^{+}$ ratio | $y$ | < 0.5 / $4 < y < 4.5$ in pp collisions at $\sqrt{s}$ = 13 TeV
Figure 11 y range 0

Data from Figure 11 , pp collisions at $\sqrt{s} = 13$ TeV

10.17182/hepdata.145759.v1/t33

Double ratio $D^{0}$ 13 TeV / 5.02 TeV | $y$ | < 0.5 / $2 < y < 2.5$ in pp collisions...
Figure 11 y range 1

Data from Figure 11 , pp collisions at $\sqrt{s} = 13$ TeV

10.17182/hepdata.145759.v1/t34

Double ratio $D^{0}$ 13 TeV / 5.02 TeV | $y$ | < 0.5 / $3 < y < 3.5$ in pp collisions...
Figure 11 y range 2

Data from Figure 11 , pp collisions at $\sqrt{s} = 13$ TeV

10.17182/hepdata.145759.v1/t35

Double ratio $D^{0}$ 13 TeV / 5.02 TeV | $y$ | < 0.5 / $4 < y < 4.5$ in pp collisions...
Figure 12 pp 13 TeV

Data from Figure 12 , pp collisions at $\sqrt{s} = 13$ TeV

10.17182/hepdata.145759.v1/t36

Charm $f_{s} / (f_{u} + f_{d})$ in pp collisions at $\sqrt{s}$ = 13 TeV
Figure 13 Left pp 13 TeV

Data from Figure 13 (left panel)

10.17182/hepdata.145759.v1/t37

$f (c \to h_{c})$ in pp collisions at $\sqrt{s}$ = 13 TeV
Figure 13 Left pp 5.02 TeV

Data from Figure 13 (left panel)

10.17182/hepdata.145759.v1/t38

$f (c \to h_{c})$ in pp collisions at $\sqrt{s}$ = 5.02 TeV
Figure 13 Right

Data from Figure 13 (right panel)

10.17182/hepdata.145759.v1/t39

$σ (c \bar{c})$ at $| y | < 0.5$ in pp collisions vs. $\sqrt{s}$

Figure 4 Dzero pp 13 TeV

Figure 4 Dplus pp 13 TeV

Figure 4 Dstar pp 13 TeV

Figure 4 Ds pp 13 TeV

Figure 6 Lc pp 13 TeV

Figure 6 Xic pp 13 TeV

Figure 7 Dplus over D0 pp 13 TeV

Figure 7 Dstar over D0 pp 13 TeV

Figure 7 Ds over D0 pp 13 TeV

Figure 7 Ds over Dplus pp 13 TeV

Figure 7 Ds over D0 Dplus pp 13 TeV

Figure 8 Lc over D0 left panel pp 13 TeV

Figure 8 Xic+ over D0 right panel pp 13 TeV

Figure 9 D0 ratio pp 13 TeV over pp 5.02 TeV

Figure 9 Dplus ratio pp 13 TeV over pp 5.02 TeV

Figure 9 Dstar ratio pp 13 TeV over pp 5.02 TeV

Figure 9 Ds ratio pp 13 TeV over pp 5.02 TeV

Figure 9 Lc ratio pp 13 TeV over pp 5.02 TeV

Figure 9 Xic+ ratio pp 13 TeV over Xic0 pp 5.02 TeV

Figure 9 Xic0 ratio pp 13 TeV over pp 5.02 TeV

Figure 10 D0 y range 0

Figure 10 D0 y range 1

Figure 10 D0 y range 2

Figure 10 Dplus y range 0

Figure 10 Dplus y range 1

Figure 10 Dplus y range 2

Figure 10 Dstar y range 0

Figure 10 Dstar y range 1

Figure 10 Dstar y range 2

Figure 10 Ds y range 0

Figure 10 Ds y range 1

Figure 10 Ds y range 2

Figure 11 y range 0

Figure 11 y range 1

Figure 11 y range 2

Figure 12 pp 13 TeV

Figure 13 Left pp 13 TeV

Figure 13 Left pp 5.02 TeV

Figure 13 Right

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