Observation of D⁰ Meson Nuclear Modifications in Au + Au Collisions at √S_NN = 200 GeV

Authors

L. Adamczyk
J. K. Adkins
G. Agakishiev
M. M. Aggarwal
Z. Ahammed
I. Alekseev
J. Alford
C. D. Anson
A. Aparin
D. Arkhipkin
E. C. Aschenauer
G. S. Averichev
A. Banerjee
D. R. Beavis
R. Bellwied
A. Bhasin
A. K. Bhati
P. Bhattarai
H. Bichsel
M. Zyzak
Et al.
STAR Collaboration

Document Type

Article

Publication Date

2014

DOI

10.1103/PhysRevLett.113.142301

Publication Title

Physical Review Letters

Volume

113

Issue

14

Pages

142301 (1-7)

Abstract

We report the first measurement of charmed-hadron (D⁰) production via the hadronic decay channel (D⁰→K⁻+π⁺) in Au+Au collisions at √s_NN=200  GeV with the STAR experiment. The charm production cross section per nucleon-nucleon collision at midrapidity scales with the number of binary collisions, N_bin, from p+p to central Au+Au collisions. The D⁰ meson yields in central Au+Au collisions are strongly suppressed compared to those in p+p scaled by N_bin, for transverse momenta p_T > 3  GeV/c, demonstrating significant energy loss of charm quarks in the hot and dense medium. An enhancement at intermediate p_T is also observed. Model calculations including strong charm-medium interactions and coalescence hadronization describe our measurements.

Rights

© 2014 American Physical Society

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Comments

An Erratum to this article was published on November 28, 2018, available at:

https://doi.org/10.1103/PhysRevLett.121.229901

Original Publication Citation

Adamczyk, L., Adkins, J. K., Agakishiev, G., Aggarwal, M.M., Ahammed, Z., Alekseev, I., Alford, J., Anson, C.D., Aparin, A., Arkhipkin, D., Aschenauer, E. C., Averichev, G. S., Banerjee, A., Beavis, D. S., Bellwied, R., Bhasin, A., Bhati, A. K., Bhattarai, P., Bichsel, H. . . . Zyzak, M. (2014) Observation of D⁰ meson nuclear modifications in Au + Au collisions at √S_NN = 200 GeV. Physical Review Letters, 113(14), 1-7, Article 142301. https://doi.org/10.1103/PhysRevLett.113.142301

Repository Citation

Adamczyk, L.; Adkins, J. K.; Agakishiev, G.; Aggarwal, M. M.; Ahammed, Z.; Alekseev, I.; Alford, J.; Anson, C. D.; Aparin, A.; Arkhipkin, D.; Aschenauer, E. C.; Averichev, G. S.; Banerjee, A.; Beavis, D. R.; Bellwied, R.; Bhasin, A.; Bhati, A. K.; Bhattarai, P.; Bichsel, H.; Zyzak, M.; Et al.; and STAR Collaboration, "Observation of D⁰ Meson Nuclear Modifications in Au + Au Collisions at √S_NN = 200 GeV" (2014). Physics Faculty Publications. 797.
https://digitalcommons.odu.edu/physics_fac_pubs/797