Measurements of $D^{0}$ and $D^{*}$ Production in $p+p$ Collisions at $\sqrt{s} = 200$ GeV

Adamczyk, L.; Agakishiev, G.; Aggarwal, M.M.; Ahammed, Z.; Alakhverdyants, A.V.; Alekseev, I.; Alford, J.; Anderson, B.D.; Anson, C.D.; Arkhipkin, D.

doi:10.1103/PhysRevD.86.072013

Measurements of $D^{0}$ and $D^{*}$ Production in $p+p$ Collisions at $\sqrt{s} = 200$ GeV

STAR

Collaboration

Apr, 2012

14 pages

Published in:

Phys.Rev.D 86 (2012) 072013

e-Print:

1204.4244 [nucl-ex]

DOI:

10.1103/PhysRevD.86.072013

Experiments:

BNL-RHIC-STAR

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Abstract: (arXiv)

We report measurements of charmed-hadron (

D^{0}

,

D^{*}

) production cross sections at mid-rapidity in

p

+

p

collisions at a center-of-mass energy of 200 GeV by the STAR experiment. Charmed hadrons were reconstructed via the hadronic decays

D^{0}\rightarrow K^{-}\pi^{+}

,

D^{*+}\rightarrow D^{0}\pi^{+}\rightarrow K^{-}\pi^{+}\pi^{+}

and their charge conjugates, covering the

p_T

range of 0.6

-

2.0 GeV/

c

and 2.0

-

6.0 GeV/

c

for

D^{0}

and

D^{*+}

, respectively. From this analysis, the charm-pair production cross section at mid-rapidity is

d\sigma/dy|_{y=0}^{c\bar{c}}

= 170

\pm

45 (stat.)

^{+38}_{-59}

(sys.)

\mu

b. The extracted charm-pair cross section is compared to perturbative QCD calculations. The transverse momentum differential cross section is found to be consistent with the upper bound of a Fixed-Order Next-to-Leading Logarithm calculation.

Note:

15 pages, 16 figures. Revised version submitted to Phys. Rev. D

25.75.Cj
25.75.-q
differential cross section: transverse momentum
quantum chromodynamics: perturbation theory
charmed meson: hadronic decay
STAR
p p: interaction
charm: pair production
D*(2010)+: hadroproduction
D0: hadroproduction

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Measurements of D0D^{0}D0 and D∗D^{*}D∗ Production in p+pp+pp+p Collisions at s=200\sqrt{s} = 200s​=200 GeV

Citations per year

Measurements of $D^{0}$ and $D^{*}$ Production in $p+p$ Collisions at $\sqrt{s} = 200$ GeV