期刊
PHYSICAL REVIEW LETTERS
卷 105, 期 20, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.105.202301
关键词
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资金
- RHIC Operations Group
- RCF at BNL
- NERSC Center at LBNL
- Open Science Grid consortium
- Offices of NP and HEP within the U.S. DOE Office of Science
- U.S. NSF
- Sloan Foundation
- DFG, Germany
- CNRS/IN2P3
- STFC
- EPSRC of the United Kingdom
- FAPESP
- CNPq of Brazil
- Ministry of Ed. and Sci. of the Russian Federation
- NNSFC
- CAS
- MoST
- MoE of China
- GA
- MSMT of the Czech Republic
- FOM
- NWO of the Netherlands
- DAE
- DST
- CSIR of India
- Polish Ministry of Sci. and Higher Ed.
- Korea Research Foundation
- Ministry of Sci., Ed. and Sports of the Rep. Of Croatia
- Russian Ministry of Sci. and Tech
- RosAtom of Russia
- Division Of Physics
- Direct For Mathematical & Physical Scien [969490, 0758018] Funding Source: National Science Foundation
- Science and Technology Facilities Council [PP/F001061/1] Funding Source: researchfish
- STFC [PP/F001061/1] Funding Source: UKRI
The contribution of B meson decays to nonphotonic electrons, which are mainly produced by the semileptonic decays of heavy-flavor mesons, in p + p collisions at root s = 200 GeV has been measured using azimuthal correlations between nonphotonic electrons and hadrons. The extracted B decay contribution is approximately 50% at a transverse momentum of p(T) >= 5 GeV/c. These measurements constrain the nuclear modification factor for electrons from B and D meson decays. The result indicates that B meson production in heavy ion collisions is also suppressed at high p(T).
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