Measurement of D* mesons in jets from p+p collisions at sqrt [s]=200 GeV

• Main Authors: Walker, M. (Contributor), Sakuma, Tai (Contributor), Redwine, Robert P. (Contributor), Milner, Richard G. (Contributor), Leight, William Axel (Contributor), Kocoloski, Adam Philip (Contributor), Jones, Christopher LaDon (Contributor), Hoffman, A. M. (Contributor), Corliss, Ross Cameron (Contributor), Betancourt, Michael Joseph (Contributor), Balewski, Jan T. (Contributor), Surrow, Bernd (Contributor)
• Other Authors: Massachusetts Institute of Technology. Department of Physics (Contributor), Massachusetts Institute of Technology. Laboratory for Nuclear Science (Contributor)
• Format: Article
• Language: English
• Published: American Physical Society, 2010-02-21T15:56:54Z.
• Subjects: Article
• Online Access: Get fulltext

We report the measurement of charged D[superscript *] mesons in inclusive jets produced in proton-proton collisions at a center-of-mass energy sqrt [s]=200  GeV with the STAR experiment at the Relativistic Heavy Ion Collider. For D[superscript *] mesons with fractional momenta 0.2<z<0.5 in inclusive jets with 11.5 GeV mean transverse energy, the production rate is found to be N(D[superscript *][superscript +]+D[superscript *][superscript -])/N(jet)=0.015±0.008(stat)±0.007(sys). This rate is consistent with perturbative QCD evaluation of gluon splitting into a pair of charm quarks and subsequent hadronization.
U.S. Department of Energy, Office of Science
Korea Research Foundation
Polish State Committee for Scientific Research
DAE, DST, and CSIR of the Government of India
FOM of the Netherlands
IRP and GA of the Czech Republic
NNSFC, CAS, MoST, and MoE of China
Russian Ministry of Sci. and Tech.
FAPESP of Brazil
STFC and EPSRC of the United Kingdom
CNRS/IN2P3, RA, RPL, and EMN of France
DFG cluster of excellence ''Origin and Structure of the Universe''
Sloan Foundation
U.S. National Science Foundation